./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 096883e9 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 965a8d1f86759d0c7cab56eb22958b9f714cfb2b .......................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ...................................................................................................................................................................................................................................................................................................................... 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 0.2.0-096883e [2020-12-01 23:20:28,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:28,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:28,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:28,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:28,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:28,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:28,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:28,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:28,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:28,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:28,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:28,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:28,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:28,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:28,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:28,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:28,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:28,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:28,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:28,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:28,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:28,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:28,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:28,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:28,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:28,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:28,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:28,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:28,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:28,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:28,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:28,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:28,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:28,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:28,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:28,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:28,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:28,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:28,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:28,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:28,683 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:20:28,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:28,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:28,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:28,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:28,751 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:28,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:28,751 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:28,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:20:28,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:28,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:28,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:28,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:28,752 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:28,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:28,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:28,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:28,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:28,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:28,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:28,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:28,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:28,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:28,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:28,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:28,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:28,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:20:28,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:20:28,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:28,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:28,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-12-01 23:20:29,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:29,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:29,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:29,281 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:29,282 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:29,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-12-01 23:20:29,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee29fbd5/6d79f185e5fa414cb192e188c7dbed93/FLAG0829e0c55 [2020-12-01 23:20:29,971 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:29,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-12-01 23:20:29,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee29fbd5/6d79f185e5fa414cb192e188c7dbed93/FLAG0829e0c55 [2020-12-01 23:20:30,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aee29fbd5/6d79f185e5fa414cb192e188c7dbed93 [2020-12-01 23:20:30,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:30,330 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:30,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:30,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:30,338 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:30,339 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:30" (1/1) ... [2020-12-01 23:20:30,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5674020d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30, skipping insertion in model container [2020-12-01 23:20:30,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:30" (1/1) ... [2020-12-01 23:20:30,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:30,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:30,609 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c[2254,2267] [2020-12-01 23:20:30,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:30,626 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:30,701 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c[2254,2267] [2020-12-01 23:20:30,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:30,721 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:30,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30 WrapperNode [2020-12-01 23:20:30,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:30,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:30,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:30,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:30,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30" (1/1) ... [2020-12-01 23:20:30,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30" (1/1) ... [2020-12-01 23:20:30,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:30,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:30,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:30,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:30,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30" (1/1) ... [2020-12-01 23:20:30,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30" (1/1) ... [2020-12-01 23:20:30,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30" (1/1) ... [2020-12-01 23:20:30,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30" (1/1) ... [2020-12-01 23:20:30,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30" (1/1) ... [2020-12-01 23:20:30,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30" (1/1) ... [2020-12-01 23:20:30,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30" (1/1) ... [2020-12-01 23:20:30,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:30,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:30,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:30,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:30,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:20:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 23:20:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 23:20:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 23:20:31,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:31,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:31,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 23:20:31,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:31,436 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:31,437 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-01 23:20:31,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:31 BoogieIcfgContainer [2020-12-01 23:20:31,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:31,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:31,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:31,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:31,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:30" (1/3) ... [2020-12-01 23:20:31,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5ad26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:31, skipping insertion in model container [2020-12-01 23:20:31,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:30" (2/3) ... [2020-12-01 23:20:31,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5ad26f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:31, skipping insertion in model container [2020-12-01 23:20:31,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:31" (3/3) ... [2020-12-01 23:20:31,448 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-12-01 23:20:31,463 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:31,466 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:31,479 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:31,507 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:31,507 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:31,508 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:31,508 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:31,508 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:31,508 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:31,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:31,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:31,525 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-12-01 23:20:31,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 23:20:31,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:31,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:31,533 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:31,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:31,541 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-12-01 23:20:31,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:31,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229803112] [2020-12-01 23:20:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:31,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:31,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229803112] [2020-12-01 23:20:31,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:31,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 23:20:31,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92784352] [2020-12-01 23:20:31,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:31,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:20:31,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:31,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:31,839 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-12-01 23:20:31,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:31,866 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2020-12-01 23:20:31,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:31,868 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-01 23:20:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:31,892 INFO L225 Difference]: With dead ends: 52 [2020-12-01 23:20:31,892 INFO L226 Difference]: Without dead ends: 24 [2020-12-01 23:20:31,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:31,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-01 23:20:31,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-01 23:20:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-01 23:20:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-01 23:20:31,942 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-12-01 23:20:31,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:31,943 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-01 23:20:31,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:31,943 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-01 23:20:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 23:20:31,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:31,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:31,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:20:31,946 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:31,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-12-01 23:20:31,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:31,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643679039] [2020-12-01 23:20:31,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:32,172 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:32,288 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:32,332 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 23:20:32,333 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:20:32,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 23:20:32,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:20:32 BoogieIcfgContainer [2020-12-01 23:20:32,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:20:32,368 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:20:32,369 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:20:32,369 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:20:32,370 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:31" (3/4) ... [2020-12-01 23:20:32,374 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 23:20:32,374 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:20:32,377 INFO L168 Benchmark]: Toolchain (without parser) took 2045.92 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 33.8 MB in the end (delta: -12.6 MB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:32,378 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 44.0 MB. Free memory was 27.1 MB in the beginning and 27.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:32,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 396.24 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.0 MB in the beginning and 39.5 MB in the end (delta: -18.5 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:32,380 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.92 ms. Allocated memory is still 54.5 MB. Free memory was 39.5 MB in the beginning and 37.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:32,381 INFO L168 Benchmark]: Boogie Preprocessor took 65.66 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 36.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:32,382 INFO L168 Benchmark]: RCFGBuilder took 542.54 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 29.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:32,383 INFO L168 Benchmark]: TraceAbstraction took 927.06 ms. Allocated memory is still 54.5 MB. Free memory was 28.9 MB in the beginning and 33.8 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:32,383 INFO L168 Benchmark]: Witness Printer took 5.91 ms. Allocated memory is still 54.5 MB. Free memory is still 33.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:32,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 44.0 MB. Free memory was 27.1 MB in the beginning and 27.0 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 396.24 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.0 MB in the beginning and 39.5 MB in the end (delta: -18.5 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.92 ms. Allocated memory is still 54.5 MB. Free memory was 39.5 MB in the beginning and 37.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.66 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 36.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 542.54 ms. Allocated memory is still 54.5 MB. Free memory was 35.9 MB in the beginning and 29.2 MB in the end (delta: 6.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 927.06 ms. Allocated memory is still 54.5 MB. Free memory was 28.9 MB in the beginning and 33.8 MB in the end (delta: -4.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.91 ms. Allocated memory is still 54.5 MB. Free memory is still 33.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 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=27occurred 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, 0.2s 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 0.2.0-096883e [2020-12-01 23:20:34,936 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:34,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:34,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:34,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:34,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:34,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:34,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:34,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:34,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:34,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:34,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:34,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:34,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:34,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:34,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:34,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:34,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:35,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:35,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:35,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:35,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:35,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:35,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:35,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:35,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:35,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:35,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:35,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:35,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:35,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:35,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:35,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:35,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:35,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:35,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:35,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:35,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:35,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:35,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:35,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:35,067 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 23:20:35,095 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:35,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:35,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:35,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:35,097 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:35,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:35,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:35,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:35,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:35,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:35,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:35,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:35,099 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:20:35,099 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:20:35,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:35,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:35,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:35,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:35,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:35,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:35,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:35,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:35,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:35,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:35,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:35,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:35,102 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:20:35,102 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:20:35,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:35,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:35,103 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:20:35,103 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-12-01 23:20:35,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:35,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:35,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:35,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:35,528 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:35,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-12-01 23:20:35,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd2fcf428/a8c5706f73b1483fa5cb8c7bc76a7f7e/FLAGe349dc45d [2020-12-01 23:20:36,211 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:36,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-12-01 23:20:36,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd2fcf428/a8c5706f73b1483fa5cb8c7bc76a7f7e/FLAGe349dc45d [2020-12-01 23:20:36,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd2fcf428/a8c5706f73b1483fa5cb8c7bc76a7f7e [2020-12-01 23:20:36,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:36,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:36,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:36,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:36,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:36,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:36" (1/1) ... [2020-12-01 23:20:36,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f6e15d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36, skipping insertion in model container [2020-12-01 23:20:36,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:36" (1/1) ... [2020-12-01 23:20:36,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:36,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:36,818 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c[2254,2267] [2020-12-01 23:20:36,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:36,836 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:36,875 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c[2254,2267] [2020-12-01 23:20:36,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:36,898 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:36,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36 WrapperNode [2020-12-01 23:20:36,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:36,900 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:36,900 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:36,900 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:36,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36" (1/1) ... [2020-12-01 23:20:36,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36" (1/1) ... [2020-12-01 23:20:36,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:36,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:36,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:36,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:36,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36" (1/1) ... [2020-12-01 23:20:36,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36" (1/1) ... [2020-12-01 23:20:36,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36" (1/1) ... [2020-12-01 23:20:36,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36" (1/1) ... [2020-12-01 23:20:36,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36" (1/1) ... [2020-12-01 23:20:37,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36" (1/1) ... [2020-12-01 23:20:37,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36" (1/1) ... [2020-12-01 23:20:37,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:37,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:37,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:37,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:37,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:37,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-01 23:20:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 23:20:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:20:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:37,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 23:20:37,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:37,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:37,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 23:20:37,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:37,984 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:37,986 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-01 23:20:37,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:37 BoogieIcfgContainer [2020-12-01 23:20:37,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:37,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:37,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:37,996 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:37,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:36" (1/3) ... [2020-12-01 23:20:37,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733cd629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:37, skipping insertion in model container [2020-12-01 23:20:37,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:36" (2/3) ... [2020-12-01 23:20:37,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733cd629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:37, skipping insertion in model container [2020-12-01 23:20:37,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:37" (3/3) ... [2020-12-01 23:20:38,000 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-12-01 23:20:38,019 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:38,024 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:38,038 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:38,085 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:38,086 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:38,086 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:38,086 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:38,087 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:38,087 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:38,087 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:38,087 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:38,105 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-12-01 23:20:38,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 23:20:38,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:38,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:38,113 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:38,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:38,120 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-12-01 23:20:38,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:38,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436730839] [2020-12-01 23:20:38,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 23:20:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:38,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 23:20:38,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:20:38,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:38,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:20:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:38,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436730839] [2020-12-01 23:20:38,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:38,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 23:20:38,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651309100] [2020-12-01 23:20:38,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:38,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:20:38,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:38,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:38,416 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-12-01 23:20:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:38,436 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2020-12-01 23:20:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:38,438 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-01 23:20:38,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:38,448 INFO L225 Difference]: With dead ends: 52 [2020-12-01 23:20:38,448 INFO L226 Difference]: Without dead ends: 24 [2020-12-01 23:20:38,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:38,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-01 23:20:38,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-01 23:20:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-01 23:20:38,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-12-01 23:20:38,490 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-12-01 23:20:38,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:38,491 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-12-01 23:20:38,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:38,491 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-12-01 23:20:38,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 23:20:38,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:38,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:38,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:20:38,708 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:38,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:38,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-12-01 23:20:38,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:38,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989948401] [2020-12-01 23:20:38,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 23:20:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:38,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:39,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:39,202 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 23:20:39,202 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:20:39,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:20:39,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:20:39 BoogieIcfgContainer [2020-12-01 23:20:39,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:20:39,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:20:39,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:20:39,446 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:20:39,447 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:37" (3/4) ... [2020-12-01 23:20:39,449 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:20:39,503 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:20:39,503 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:20:39,506 INFO L168 Benchmark]: Toolchain (without parser) took 2944.64 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.2 MB in the beginning and 36.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:39,507 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 50.3 MB. Free memory was 31.9 MB in the beginning and 31.9 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:39,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.19 ms. Allocated memory is still 50.3 MB. Free memory was 27.0 MB in the beginning and 26.4 MB in the end (delta: 646.2 kB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:39,508 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.28 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 24.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:39,509 INFO L168 Benchmark]: Boogie Preprocessor took 68.94 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.6 MB in the beginning and 44.6 MB in the end (delta: -20.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:39,510 INFO L168 Benchmark]: RCFGBuilder took 966.21 ms. Allocated memory is still 60.8 MB. Free memory was 44.3 MB in the beginning and 38.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:39,510 INFO L168 Benchmark]: TraceAbstraction took 1453.37 ms. Allocated memory is still 60.8 MB. Free memory was 38.2 MB in the beginning and 39.2 MB in the end (delta: -1.1 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:39,511 INFO L168 Benchmark]: Witness Printer took 57.49 ms. Allocated memory is still 60.8 MB. Free memory was 39.2 MB in the beginning and 36.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:39,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 50.3 MB. Free memory was 31.9 MB in the beginning and 31.9 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.19 ms. Allocated memory is still 50.3 MB. Free memory was 27.0 MB in the beginning and 26.4 MB in the end (delta: 646.2 kB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.28 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 24.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 68.94 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 24.6 MB in the beginning and 44.6 MB in the end (delta: -20.0 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * RCFGBuilder took 966.21 ms. Allocated memory is still 60.8 MB. Free memory was 44.3 MB in the beginning and 38.5 MB in the end (delta: 5.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1453.37 ms. Allocated memory is still 60.8 MB. Free memory was 38.2 MB in the beginning and 39.2 MB in the end (delta: -1.1 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * Witness Printer took 57.49 ms. Allocated memory is still 60.8 MB. Free memory was 39.2 MB in the beginning and 36.7 MB in the end (delta: 2.6 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: 91]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L91] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...