./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ee8e70e7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f ...................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f ............................................................................................................................................................................................................................................................................................................................................................................................................................. 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-ee8e70e [2020-10-24 15:03:50,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:03:50,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:03:50,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:03:50,474 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:03:50,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:03:50,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:03:50,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:03:50,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:03:50,493 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:03:50,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:03:50,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:03:50,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:03:50,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:03:50,499 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:03:50,501 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:03:50,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:03:50,503 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:03:50,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:03:50,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:03:50,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:03:50,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:03:50,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:03:50,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:03:50,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:03:50,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:03:50,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:03:50,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:03:50,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:03:50,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:03:50,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:03:50,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:03:50,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:03:50,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:03:50,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:03:50,526 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:03:50,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:03:50,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:03:50,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:03:50,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:03:50,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:03:50,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 15:03:50,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:03:50,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:03:50,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:03:50,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:03:50,571 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:03:50,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:03:50,575 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:03:50,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 15:03:50,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:03:50,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:03:50,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:03:50,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:03:50,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:03:50,576 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:03:50,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:03:50,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:03:50,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:03:50,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:03:50,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:03:50,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:03:50,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:03:50,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:03:50,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:03:50,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:03:50,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:03:50,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 15:03:50,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 15:03:50,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:03:50,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:03:50,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f [2020-10-24 15:03:51,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:03:51,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:03:51,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:03:51,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:03:51,068 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:03:51,069 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-10-24 15:03:51,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee50600c3/3c3f91b0401c4108bd559e86dd255b16/FLAG4c384516d [2020-10-24 15:03:51,955 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:03:51,956 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-10-24 15:03:51,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee50600c3/3c3f91b0401c4108bd559e86dd255b16/FLAG4c384516d [2020-10-24 15:03:52,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee50600c3/3c3f91b0401c4108bd559e86dd255b16 [2020-10-24 15:03:52,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:03:52,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:03:52,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:52,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:03:52,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:03:52,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:52" (1/1) ... [2020-10-24 15:03:52,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df88259 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52, skipping insertion in model container [2020-10-24 15:03:52,335 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:52" (1/1) ... [2020-10-24 15:03:52,363 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:03:52,413 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:03:52,693 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:52,702 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:03:52,738 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:52,758 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:03:52,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52 WrapperNode [2020-10-24 15:03:52,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:52,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:52,762 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:03:52,762 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:03:52,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52" (1/1) ... [2020-10-24 15:03:52,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52" (1/1) ... [2020-10-24 15:03:52,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:52,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:03:52,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:03:52,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:03:52,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52" (1/1) ... [2020-10-24 15:03:52,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52" (1/1) ... [2020-10-24 15:03:52,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52" (1/1) ... [2020-10-24 15:03:52,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52" (1/1) ... [2020-10-24 15:03:52,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52" (1/1) ... [2020-10-24 15:03:52,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52" (1/1) ... [2020-10-24 15:03:52,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52" (1/1) ... [2020-10-24 15:03:52,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:03:52,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:03:52,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:03:52,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:03:52,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 15:03:52,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 15:03:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:03:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 15:03:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 15:03:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 15:03:52,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:03:52,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:03:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 15:03:52,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:03:53,326 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:03:53,327 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:03:53,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:53 BoogieIcfgContainer [2020-10-24 15:03:53,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:03:53,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:03:53,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:03:53,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:03:53,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:03:52" (1/3) ... [2020-10-24 15:03:53,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c04aef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:53, skipping insertion in model container [2020-10-24 15:03:53,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:52" (2/3) ... [2020-10-24 15:03:53,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c04aef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:53, skipping insertion in model container [2020-10-24 15:03:53,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:53" (3/3) ... [2020-10-24 15:03:53,339 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-10-24 15:03:53,352 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:03:53,359 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:03:53,374 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:03:53,411 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:03:53,411 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:03:53,411 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:03:53,412 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:03:53,412 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:03:53,412 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:03:53,412 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:03:53,412 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:03:53,432 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-24 15:03:53,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 15:03:53,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:03:53,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:03:53,445 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:03:53,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:03:53,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-10-24 15:03:53,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:03:53,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755402335] [2020-10-24 15:03:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:03:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:03:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:03:53,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755402335] [2020-10-24 15:03:53,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:03:53,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 15:03:53,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695973748] [2020-10-24 15:03:53,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:03:53,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 15:03:53,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:03:53,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:03:53,705 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-10-24 15:03:53,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:03:53,726 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-10-24 15:03:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:03:53,728 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 15:03:53,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:03:53,739 INFO L225 Difference]: With dead ends: 57 [2020-10-24 15:03:53,740 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 15:03:53,743 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 [2020-10-24 15:03:53,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 15:03:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-24 15:03:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 15:03:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-10-24 15:03:53,783 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-10-24 15:03:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:03:53,784 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-24 15:03:53,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:03:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-10-24 15:03:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:03:53,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:03:53,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:03:53,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 15:03:53,786 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:03:53,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:03:53,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-10-24 15:03:53,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 15:03:53,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918170820] [2020-10-24 15:03:53,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 15:03:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:03:53,957 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:03:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:03:54,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:03:54,072 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 15:03:54,073 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:03:54,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 15:03:54,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:03:54 BoogieIcfgContainer [2020-10-24 15:03:54,109 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:03:54,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:03:54,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:03:54,110 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:03:54,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:53" (3/4) ... [2020-10-24 15:03:54,115 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 15:03:54,115 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:03:54,119 INFO L168 Benchmark]: Toolchain (without parser) took 1819.59 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 19.9 MB in the beginning and 45.6 MB in the end (delta: -25.7 MB). Peak memory consumption was 714.5 kB. Max. memory is 16.1 GB. [2020-10-24 15:03:54,119 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 44.0 MB. Free memory is still 29.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:54,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 440.32 ms. Allocated memory is still 54.5 MB. Free memory was 38.8 MB in the beginning and 28.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:54,121 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.91 ms. Allocated memory is still 54.5 MB. Free memory was 28.0 MB in the beginning and 26.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:54,122 INFO L168 Benchmark]: Boogie Preprocessor took 36.78 ms. Allocated memory is still 54.5 MB. Free memory was 26.1 MB in the beginning and 24.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:54,123 INFO L168 Benchmark]: RCFGBuilder took 478.51 ms. Allocated memory is still 54.5 MB. Free memory was 24.5 MB in the beginning and 33.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:54,124 INFO L168 Benchmark]: TraceAbstraction took 778.27 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.3 MB in the beginning and 46.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:03:54,125 INFO L168 Benchmark]: Witness Printer took 5.91 ms. Allocated memory is still 67.1 MB. Free memory was 46.0 MB in the beginning and 45.9 MB in the end (delta: 42.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:03:54,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 44.0 MB. Free memory is still 29.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 440.32 ms. Allocated memory is still 54.5 MB. Free memory was 38.8 MB in the beginning and 28.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.91 ms. Allocated memory is still 54.5 MB. Free memory was 28.0 MB in the beginning and 26.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.78 ms. Allocated memory is still 54.5 MB. Free memory was 26.1 MB in the beginning and 24.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 478.51 ms. Allocated memory is still 54.5 MB. Free memory was 24.5 MB in the beginning and 33.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 778.27 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 33.3 MB in the beginning and 46.0 MB in the end (delta: -12.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.91 ms. Allocated memory is still 67.1 MB. Free memory was 46.0 MB in the beginning and 45.9 MB in the end (delta: 42.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 33, overapproximation of bitwiseOr at line 75, overapproximation of bitwiseAnd at line 74, overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 88. Possible FailurePath: [L88] double x = 1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND TRUE exponent_less_1023 < 20 [L27] COND FALSE !(exponent_less_1023 < 0) [L33] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L34] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L35] return x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 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: 36 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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-ee8e70e [2020-10-24 15:03:56,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 15:03:56,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 15:03:56,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 15:03:56,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 15:03:56,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 15:03:56,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 15:03:56,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 15:03:56,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 15:03:56,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 15:03:56,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 15:03:56,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 15:03:56,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 15:03:56,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 15:03:56,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 15:03:56,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 15:03:56,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 15:03:56,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 15:03:56,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 15:03:56,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 15:03:56,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 15:03:56,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 15:03:56,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 15:03:56,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 15:03:56,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 15:03:56,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 15:03:56,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 15:03:56,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 15:03:56,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 15:03:56,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 15:03:56,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 15:03:56,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 15:03:56,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 15:03:56,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 15:03:56,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 15:03:56,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 15:03:57,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 15:03:57,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 15:03:57,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 15:03:57,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 15:03:57,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 15:03:57,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 15:03:57,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 15:03:57,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 15:03:57,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 15:03:57,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 15:03:57,038 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 15:03:57,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 15:03:57,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 15:03:57,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 15:03:57,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 15:03:57,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 15:03:57,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 15:03:57,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 15:03:57,040 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 15:03:57,041 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 15:03:57,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 15:03:57,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 15:03:57,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 15:03:57,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 15:03:57,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 15:03:57,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 15:03:57,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 15:03:57,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 15:03:57,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 15:03:57,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 15:03:57,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 15:03:57,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 15:03:57,045 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 15:03:57,045 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 15:03:57,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 15:03:57,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 15:03:57,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 15:03:57,046 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f [2020-10-24 15:03:57,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 15:03:57,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 15:03:57,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 15:03:57,490 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 15:03:57,491 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 15:03:57,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-10-24 15:03:57,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7570ef66a/bca82e7bdfcd47df9df371a075a46fe7/FLAGfc8e92753 [2020-10-24 15:03:58,304 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 15:03:58,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-10-24 15:03:58,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7570ef66a/bca82e7bdfcd47df9df371a075a46fe7/FLAGfc8e92753 [2020-10-24 15:03:58,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7570ef66a/bca82e7bdfcd47df9df371a075a46fe7 [2020-10-24 15:03:58,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 15:03:58,649 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 15:03:58,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:58,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 15:03:58,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 15:03:58,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:58" (1/1) ... [2020-10-24 15:03:58,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a4830f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:58, skipping insertion in model container [2020-10-24 15:03:58,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:03:58" (1/1) ... [2020-10-24 15:03:58,679 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 15:03:58,710 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-10-24 15:03:58,963 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:58,983 INFO L212 MainTranslator]: Completed pre-run [2020-10-24 15:03:59,040 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-10-24 15:03:59,064 INFO L217 MainTranslator]: Completed translation [2020-10-24 15:03:59,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:59 WrapperNode [2020-10-24 15:03:59,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 15:03:59,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:59,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 15:03:59,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 15:03:59,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:59" (1/1) ... [2020-10-24 15:03:59,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:59" (1/1) ... [2020-10-24 15:03:59,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 15:03:59,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 15:03:59,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 15:03:59,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 15:03:59,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:59" (1/1) ... [2020-10-24 15:03:59,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:59" (1/1) ... [2020-10-24 15:03:59,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:59" (1/1) ... [2020-10-24 15:03:59,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:59" (1/1) ... [2020-10-24 15:03:59,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:59" (1/1) ... [2020-10-24 15:03:59,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:59" (1/1) ... [2020-10-24 15:03:59,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:59" (1/1) ... [2020-10-24 15:03:59,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 15:03:59,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 15:03:59,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 15:03:59,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 15:03:59,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 15:03:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-10-24 15:03:59,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 15:03:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 15:03:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 15:03:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 15:03:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 15:03:59,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 15:03:59,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 15:03:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 15:03:59,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 15:03:59,929 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 15:03:59,930 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 15:03:59,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:59 BoogieIcfgContainer [2020-10-24 15:03:59,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 15:03:59,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 15:03:59,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 15:03:59,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 15:03:59,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:03:58" (1/3) ... [2020-10-24 15:03:59,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d976e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:59, skipping insertion in model container [2020-10-24 15:03:59,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:03:59" (2/3) ... [2020-10-24 15:03:59,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d976e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:03:59, skipping insertion in model container [2020-10-24 15:03:59,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:59" (3/3) ... [2020-10-24 15:03:59,942 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-10-24 15:03:59,955 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 15:03:59,961 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 15:03:59,975 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 15:04:00,003 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 15:04:00,003 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 15:04:00,003 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 15:04:00,004 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 15:04:00,004 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 15:04:00,004 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 15:04:00,004 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 15:04:00,004 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 15:04:00,019 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-24 15:04:00,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-24 15:04:00,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:04:00,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:04:00,027 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:04:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:04:00,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-10-24 15:04:00,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:04:00,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210199765] [2020-10-24 15:04:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 15:04:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:04:01,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 15:04:01,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:04:01,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:04:01,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:04:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:04:01,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210199765] [2020-10-24 15:04:01,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:04:01,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 15:04:01,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626697281] [2020-10-24 15:04:01,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 15:04:01,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:04:01,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 15:04:01,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 15:04:01,139 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-10-24 15:04:01,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:04:01,160 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-10-24 15:04:01,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 15:04:01,162 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-24 15:04:01,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:04:01,173 INFO L225 Difference]: With dead ends: 57 [2020-10-24 15:04:01,173 INFO L226 Difference]: Without dead ends: 26 [2020-10-24 15:04:01,177 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 [2020-10-24 15:04:01,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-24 15:04:01,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-24 15:04:01,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-24 15:04:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-10-24 15:04:01,216 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-10-24 15:04:01,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:04:01,217 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-24 15:04:01,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 15:04:01,217 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-10-24 15:04:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:04:01,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:04:01,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:04:01,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 15:04:01,432 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:04:01,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:04:01,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-10-24 15:04:01,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:04:01,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631490140] [2020-10-24 15:04:01,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 15:04:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:04:02,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-24 15:04:02,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:04:09,109 WARN L193 SmtUtils]: Spent 2.20 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-24 15:04:20,898 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 28 [2020-10-24 15:04:37,680 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 34 [2020-10-24 15:04:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:04:37,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:04:56,836 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64)) (v_ULTIMATE.start_round_double_~x_10 (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|)))) (or (not (= (fp.div c_~CRM .cse0 .cse1) (fp ((_ extract 63 63) v_ULTIMATE.start_round_double_~x_10) ((_ extract 62 52) v_ULTIMATE.start_round_double_~x_10) ((_ extract 51 0) v_ULTIMATE.start_round_double_~x_10)))) (not (bvslt (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) v_ULTIMATE.start_round_double_~x_10)) (_ bv20 32)) (_ bv4294966273 32)) (_ bv20 32))) (not (= .cse0 ((_ to_fp 11 53) c_~CRM 1.0))) (not (= (_ +zero 11 53) .cse1))))) is different from true [2020-10-24 15:04:56,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:04:56,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631490140] [2020-10-24 15:04:56,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:04:56,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-24 15:04:56,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738996592] [2020-10-24 15:04:56,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-24 15:04:56,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:04:56,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-24 15:04:56,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=42, Unknown=14, NotChecked=14, Total=90 [2020-10-24 15:04:56,843 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 10 states. [2020-10-24 15:05:05,093 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 40 DAG size of output: 3 [2020-10-24 15:05:07,388 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|)))) (and (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) c_ULTIMATE.start_round_double_~x) ((_ extract 62 52) c_ULTIMATE.start_round_double_~x) ((_ extract 51 0) c_ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= (_ +zero 11 53) .cse1))))) is different from false [2020-10-24 15:05:15,568 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|)))) (and (= (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) ULTIMATE.start_round_double_~x)) (_ bv20 32)) (_ bv4294966273 32)) c_ULTIMATE.start_round_double_~exponent_less_1023~0) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= (_ +zero 11 53) .cse1)))) (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|)))) (and (= ((_ extract 63 32) ULTIMATE.start_round_double_~x) c_ULTIMATE.start_round_double_~msw~0) (= (fp.div roundNearestTiesToEven .cse2 .cse3) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= (_ +zero 11 53) .cse3))))) is different from false [2020-10-24 15:05:34,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:05:34,148 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-24 15:05:34,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 15:05:34,343 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-10-24 15:05:34,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:05:34,344 INFO L225 Difference]: With dead ends: 53 [2020-10-24 15:05:34,345 INFO L226 Difference]: Without dead ends: 38 [2020-10-24 15:05:34,347 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 67.3s TimeCoverageRelationStatistics Valid=27, Invalid=56, Unknown=19, NotChecked=54, Total=156 [2020-10-24 15:05:34,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-24 15:05:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 22. [2020-10-24 15:05:34,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-24 15:05:34,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-10-24 15:05:34,358 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2020-10-24 15:05:34,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:05:34,359 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-10-24 15:05:34,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-24 15:05:34,359 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-10-24 15:05:34,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:05:34,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:05:34,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:05:34,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 15:05:34,563 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:05:34,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:05:34,565 INFO L82 PathProgramCache]: Analyzing trace with hash 256590961, now seen corresponding path program 1 times [2020-10-24 15:05:34,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:05:34,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175674871] [2020-10-24 15:05:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 15:05:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 15:05:35,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-24 15:05:35,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 15:05:37,846 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~nondet18_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_8|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_8|)))) (and (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) c_ULTIMATE.start_round_double_~x) ((_ extract 62 52) c_ULTIMATE.start_round_double_~x) ((_ extract 51 0) c_ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= .cse1 (_ +zero 11 53))))) is different from false [2020-10-24 15:05:40,103 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_8|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_8|)))) (and (= ((_ extract 63 32) ULTIMATE.start_round_double_~x) c_ULTIMATE.start_round_double_~msw~0) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= .cse1 (_ +zero 11 53))))) is different from false [2020-10-24 15:05:46,546 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification that was a NOOP. DAG size: 34 [2020-10-24 15:05:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:05:46,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 15:05:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 15:05:54,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175674871] [2020-10-24 15:05:54,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 15:05:54,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-10-24 15:05:54,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774384198] [2020-10-24 15:05:54,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-24 15:05:54,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 15:05:54,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-24 15:05:54,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=29, Unknown=5, NotChecked=22, Total=72 [2020-10-24 15:05:54,395 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 9 states. [2020-10-24 15:05:56,686 WARN L838 $PredicateComparison]: unable to prove that (and (bvsgt (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) c_ULTIMATE.start_round_double_~x)) (_ bv20 32)) (_ bv4294966273 32)) (_ bv51 32)) (= roundNearestTiesToEven c_~CRM) (exists ((|v_ULTIMATE.start_main_#t~nondet18_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_8|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_8|)))) (and (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) c_ULTIMATE.start_round_double_~x) ((_ extract 62 52) c_ULTIMATE.start_round_double_~x) ((_ extract 51 0) c_ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= .cse1 (_ +zero 11 53)))))) is different from false [2020-10-24 15:05:58,910 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_8|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_8|)))) (and (= ((_ extract 63 32) ULTIMATE.start_round_double_~x) c_ULTIMATE.start_round_double_~msw~0) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= .cse1 (_ +zero 11 53))))) (bvsgt (bvadd (bvashr (bvand (_ bv2146435072 32) c_ULTIMATE.start_round_double_~msw~0) (_ bv20 32)) (_ bv4294966273 32)) (_ bv51 32))) is different from false [2020-10-24 15:06:06,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 15:06:06,661 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-10-24 15:06:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-24 15:06:06,851 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-24 15:06:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 15:06:06,852 INFO L225 Difference]: With dead ends: 30 [2020-10-24 15:06:06,852 INFO L226 Difference]: Without dead ends: 16 [2020-10-24 15:06:06,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=20, Invalid=31, Unknown=7, NotChecked=52, Total=110 [2020-10-24 15:06:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-24 15:06:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-24 15:06:06,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-24 15:06:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-10-24 15:06:06,857 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-10-24 15:06:06,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 15:06:06,857 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-10-24 15:06:06,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-24 15:06:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-10-24 15:06:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 15:06:06,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 15:06:06,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 15:06:07,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 15:06:07,071 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 15:06:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 15:06:07,072 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2020-10-24 15:06:07,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 15:06:07,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567949739] [2020-10-24 15:06:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-24 15:06:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:06:08,337 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:06:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 15:06:09,466 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 15:06:09,632 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 15:06:09,632 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 15:06:09,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 15:06:09,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:06:09 BoogieIcfgContainer [2020-10-24 15:06:09,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 15:06:09,868 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 15:06:09,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 15:06:09,868 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 15:06:09,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:03:59" (3/4) ... [2020-10-24 15:06:09,870 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 15:06:09,926 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 15:06:09,926 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 15:06:09,928 INFO L168 Benchmark]: Toolchain (without parser) took 131284.41 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 30.6 MB in the beginning and 29.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:09,929 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 37.7 MB. Free memory was 18.3 MB in the beginning and 18.3 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 15:06:09,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.99 ms. Allocated memory is still 46.1 MB. Free memory was 29.9 MB in the beginning and 29.6 MB in the end (delta: 245.1 kB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:09,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.48 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 27.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:09,932 INFO L168 Benchmark]: Boogie Preprocessor took 75.65 ms. Allocated memory is still 46.1 MB. Free memory was 27.8 MB in the beginning and 26.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:09,933 INFO L168 Benchmark]: RCFGBuilder took 720.61 ms. Allocated memory is still 46.1 MB. Free memory was 26.0 MB in the beginning and 25.7 MB in the end (delta: 267.5 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:09,934 INFO L168 Benchmark]: TraceAbstraction took 129933.38 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 25.4 MB in the beginning and 31.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:09,935 INFO L168 Benchmark]: Witness Printer took 58.63 ms. Allocated memory is still 58.7 MB. Free memory was 31.4 MB in the beginning and 29.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 15:06:09,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 37.7 MB. Free memory was 18.3 MB in the beginning and 18.3 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 410.99 ms. Allocated memory is still 46.1 MB. Free memory was 29.9 MB in the beginning and 29.6 MB in the end (delta: 245.1 kB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.48 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 27.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.65 ms. Allocated memory is still 46.1 MB. Free memory was 27.8 MB in the beginning and 26.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 720.61 ms. Allocated memory is still 46.1 MB. Free memory was 26.0 MB in the beginning and 25.7 MB in the end (delta: 267.5 kB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 129933.38 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 25.4 MB in the beginning and 31.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Witness Printer took 58.63 ms. Allocated memory is still 58.7 MB. Free memory was 31.4 MB in the beginning and 29.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L88] EXPR 1.0 [L88] EXPR 0.0 [L88] EXPR 1.0 / 0.0 [L88] double x = 1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND FALSE !(exponent_less_1023 < 20) [L40] COND TRUE exponent_less_1023 > 51 [L41] COND TRUE exponent_less_1023 == 1024 [L42] EXPR x + x [L42] return x + x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 129.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 50.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 19 SDslu, 185 SDs, 0 SdLazy, 73 SolverSat, 3 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 29.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 90.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 16 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 73.4s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 10 QuantifiedInterpolants, 9108 SizeOfPredicates, 12 NumberOfNonLiveVariables, 163 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...