./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc 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_1052c.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 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c ..................................................................................................................................................................................................................................................................................................... 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_1052c.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 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c ....................................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-10-24 23:16:24,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:24,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:24,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:24,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:24,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:24,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:24,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:24,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:24,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:24,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:24,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:24,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:24,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:24,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:24,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:24,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:24,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:24,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:24,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:24,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:24,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:24,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:24,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:24,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:24,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:24,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:24,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:24,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:24,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:24,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:24,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:24,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:24,794 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:24,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:24,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:24,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:24,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:24,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:24,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:24,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:24,804 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-24 23:16:24,853 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:24,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:24,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:24,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:24,855 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:24,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:24,856 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:24,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 23:16:24,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:24,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:24,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:24,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:24,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:24,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:24,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:24,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:24,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:24,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:24,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:24,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:24,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:24,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:24,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:24,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:24,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:24,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-24 23:16:24,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-24 23:16:24,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:24,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:24,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c [2020-10-24 23:16:25,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:25,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:25,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:25,284 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:25,285 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:25,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-10-24 23:16:25,369 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1ecf3e3/6fcded723f8043d1bc0b28708a9ffd05/FLAG1b94c70e1 [2020-10-24 23:16:26,111 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:26,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-10-24 23:16:26,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1ecf3e3/6fcded723f8043d1bc0b28708a9ffd05/FLAG1b94c70e1 [2020-10-24 23:16:26,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d1ecf3e3/6fcded723f8043d1bc0b28708a9ffd05 [2020-10-24 23:16:26,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:26,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:26,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:26,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:26,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:26,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:26" (1/1) ... [2020-10-24 23:16:26,491 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cce2397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26, skipping insertion in model container [2020-10-24 23:16:26,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:26" (1/1) ... [2020-10-24 23:16:26,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:26,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:26,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:26,824 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:26,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:26,883 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:26,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26 WrapperNode [2020-10-24 23:16:26,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:26,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:26,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:26,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:26,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26" (1/1) ... [2020-10-24 23:16:26,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26" (1/1) ... [2020-10-24 23:16:26,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:26,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:26,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:26,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:26,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26" (1/1) ... [2020-10-24 23:16:26,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26" (1/1) ... [2020-10-24 23:16:26,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26" (1/1) ... [2020-10-24 23:16:26,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26" (1/1) ... [2020-10-24 23:16:26,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26" (1/1) ... [2020-10-24 23:16:26,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26" (1/1) ... [2020-10-24 23:16:26,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26" (1/1) ... [2020-10-24 23:16:26,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:26,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:26,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:27,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:27,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26" (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 [2020-10-24 23:16:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 23:16:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:27,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 23:16:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 23:16:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 23:16:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:27,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 23:16:27,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:16:27,618 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:16:27,618 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 23:16:27,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:27 BoogieIcfgContainer [2020-10-24 23:16:27,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:16:27,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:16:27,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:16:27,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:16:27,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:26" (1/3) ... [2020-10-24 23:16:27,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8ad6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:27, skipping insertion in model container [2020-10-24 23:16:27,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:26" (2/3) ... [2020-10-24 23:16:27,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8ad6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:27, skipping insertion in model container [2020-10-24 23:16:27,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:27" (3/3) ... [2020-10-24 23:16:27,630 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-10-24 23:16:27,643 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:16:27,649 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:16:27,665 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:16:27,694 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:16:27,694 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:16:27,694 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:16:27,694 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:16:27,695 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:16:27,695 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:16:27,695 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:16:27,695 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:16:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-24 23:16:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:16:27,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:27,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:27,720 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:27,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:27,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-10-24 23:16:27,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:27,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975864497] [2020-10-24 23:16:27,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:27,918 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 23:16:27,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975864497] [2020-10-24 23:16:27,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:27,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-24 23:16:27,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980278199] [2020-10-24 23:16:27,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:16:27,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-24 23:16:27,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:16:27,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:27,949 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-10-24 23:16:27,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:27,979 INFO L93 Difference]: Finished difference Result 75 states and 119 transitions. [2020-10-24 23:16:27,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:16:27,981 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 23:16:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:27,993 INFO L225 Difference]: With dead ends: 75 [2020-10-24 23:16:27,994 INFO L226 Difference]: Without dead ends: 35 [2020-10-24 23:16:27,997 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 23:16:28,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-24 23:16:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-24 23:16:28,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-24 23:16:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-10-24 23:16:28,042 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-10-24 23:16:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:28,042 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-10-24 23:16:28,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:16:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-10-24 23:16:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 23:16:28,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:28,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:28,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 23:16:28,045 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:28,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:28,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-10-24 23:16:28,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-24 23:16:28,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182865214] [2020-10-24 23:16:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 23:16:28,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:28,104 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:28,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:28,207 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-24 23:16:28,208 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:16:28,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 23:16:28,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:16:28 BoogieIcfgContainer [2020-10-24 23:16:28,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:16:28,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:16:28,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:16:28,270 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:16:28,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:27" (3/4) ... [2020-10-24 23:16:28,274 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-24 23:16:28,275 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:16:28,280 INFO L168 Benchmark]: Toolchain (without parser) took 1806.50 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 29.3 MB in the beginning and 34.4 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:28,282 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 39.8 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:28,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.92 ms. Allocated memory is still 52.4 MB. Free memory was 28.6 MB in the beginning and 29.0 MB in the end (delta: -330.1 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:28,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.52 ms. Allocated memory is still 52.4 MB. Free memory was 29.0 MB in the beginning and 27.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:28,286 INFO L168 Benchmark]: Boogie Preprocessor took 46.44 ms. Allocated memory is still 52.4 MB. Free memory was 27.2 MB in the beginning and 25.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:28,287 INFO L168 Benchmark]: RCFGBuilder took 621.09 ms. Allocated memory is still 52.4 MB. Free memory was 25.5 MB in the beginning and 30.9 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:28,289 INFO L168 Benchmark]: TraceAbstraction took 646.12 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 30.7 MB in the beginning and 34.7 MB in the end (delta: -4.0 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:28,291 INFO L168 Benchmark]: Witness Printer took 5.29 ms. Allocated memory is still 65.0 MB. Free memory was 34.7 MB in the beginning and 34.4 MB in the end (delta: 327.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:28,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 39.8 MB. Free memory was 18.0 MB in the beginning and 18.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 405.92 ms. Allocated memory is still 52.4 MB. Free memory was 28.6 MB in the beginning and 29.0 MB in the end (delta: -330.1 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.52 ms. Allocated memory is still 52.4 MB. Free memory was 29.0 MB in the beginning and 27.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.44 ms. Allocated memory is still 52.4 MB. Free memory was 27.2 MB in the beginning and 25.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 621.09 ms. Allocated memory is still 52.4 MB. Free memory was 25.5 MB in the beginning and 30.9 MB in the end (delta: -5.4 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 646.12 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 30.7 MB in the beginning and 34.7 MB in the end (delta: -4.0 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.29 ms. Allocated memory is still 65.0 MB. Free memory was 34.7 MB in the beginning and 34.4 MB in the end (delta: 327.2 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 39, overapproximation of bitwiseOr at line 40, overapproximation of someUnaryDOUBLEoperation at line 100, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 104. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1052c.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 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=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-10-24 23:16:31,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 23:16:31,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 23:16:31,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 23:16:31,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 23:16:31,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 23:16:31,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 23:16:31,098 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 23:16:31,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 23:16:31,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 23:16:31,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 23:16:31,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 23:16:31,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 23:16:31,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 23:16:31,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 23:16:31,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 23:16:31,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 23:16:31,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 23:16:31,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 23:16:31,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 23:16:31,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 23:16:31,127 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 23:16:31,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 23:16:31,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 23:16:31,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-24 23:16:31,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-24 23:16:31,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-24 23:16:31,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-24 23:16:31,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-24 23:16:31,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-24 23:16:31,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-24 23:16:31,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-24 23:16:31,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-24 23:16:31,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-24 23:16:31,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-24 23:16:31,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-24 23:16:31,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-24 23:16:31,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-24 23:16:31,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 23:16:31,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 23:16:31,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 23:16:31,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-24 23:16:31,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 23:16:31,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 23:16:31,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-24 23:16:31,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-24 23:16:31,182 INFO L138 SettingsManager]: * Use SBE=true [2020-10-24 23:16:31,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 23:16:31,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 23:16:31,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 23:16:31,184 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 23:16:31,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 23:16:31,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 23:16:31,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 23:16:31,187 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-24 23:16:31,187 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-24 23:16:31,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 23:16:31,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 23:16:31,188 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 23:16:31,188 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 23:16:31,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 23:16:31,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-24 23:16:31,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 23:16:31,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 23:16:31,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 23:16:31,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 23:16:31,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-24 23:16:31,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-24 23:16:31,190 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-24 23:16:31,192 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-24 23:16:31,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 23:16:31,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-24 23:16:31,193 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-24 23:16:31,193 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c [2020-10-24 23:16:31,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 23:16:31,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 23:16:31,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 23:16:31,726 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 23:16:31,727 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 23:16:31,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-10-24 23:16:31,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7c90e401/3867179420b24062a7cf5c28ba868c5a/FLAG53fefbd0c [2020-10-24 23:16:32,420 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 23:16:32,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-10-24 23:16:32,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7c90e401/3867179420b24062a7cf5c28ba868c5a/FLAG53fefbd0c [2020-10-24 23:16:32,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7c90e401/3867179420b24062a7cf5c28ba868c5a [2020-10-24 23:16:32,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 23:16:32,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-24 23:16:32,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:32,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 23:16:32,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 23:16:32,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:32" (1/1) ... [2020-10-24 23:16:32,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f75ad1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:32, skipping insertion in model container [2020-10-24 23:16:32,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:16:32" (1/1) ... [2020-10-24 23:16:32,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 23:16:32,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 23:16:33,067 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:33,084 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 23:16:33,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 23:16:33,173 INFO L208 MainTranslator]: Completed translation [2020-10-24 23:16:33,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:33 WrapperNode [2020-10-24 23:16:33,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 23:16:33,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:33,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-24 23:16:33,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-24 23:16:33,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:33" (1/1) ... [2020-10-24 23:16:33,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:33" (1/1) ... [2020-10-24 23:16:33,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-24 23:16:33,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 23:16:33,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 23:16:33,267 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 23:16:33,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:33" (1/1) ... [2020-10-24 23:16:33,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:33" (1/1) ... [2020-10-24 23:16:33,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:33" (1/1) ... [2020-10-24 23:16:33,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:33" (1/1) ... [2020-10-24 23:16:33,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:33" (1/1) ... [2020-10-24 23:16:33,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:33" (1/1) ... [2020-10-24 23:16:33,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:33" (1/1) ... [2020-10-24 23:16:33,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 23:16:33,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 23:16:33,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 23:16:33,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 23:16:33,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:33" (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 [2020-10-24 23:16:33,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-24 23:16:33,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-24 23:16:33,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-24 23:16:33,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 23:16:33,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-24 23:16:33,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 23:16:33,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 23:16:33,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-24 23:16:33,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 23:16:34,985 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 23:16:34,986 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 23:16:34,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:34 BoogieIcfgContainer [2020-10-24 23:16:34,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 23:16:34,990 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 23:16:34,990 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 23:16:34,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 23:16:34,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:16:32" (1/3) ... [2020-10-24 23:16:34,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471f38ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:34, skipping insertion in model container [2020-10-24 23:16:34,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:16:33" (2/3) ... [2020-10-24 23:16:34,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471f38ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:16:34, skipping insertion in model container [2020-10-24 23:16:34,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:34" (3/3) ... [2020-10-24 23:16:34,997 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-10-24 23:16:35,010 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-24 23:16:35,016 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 23:16:35,031 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 23:16:35,061 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 23:16:35,061 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 23:16:35,061 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-24 23:16:35,062 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 23:16:35,062 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 23:16:35,062 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 23:16:35,062 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 23:16:35,062 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 23:16:35,081 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-10-24 23:16:35,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-24 23:16:35,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:35,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:35,089 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:35,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-10-24 23:16:35,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:35,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2100981405] [2020-10-24 23:16:35,111 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 [2020-10-24 23:16:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:35,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-24 23:16:35,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:16:35,244 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 23:16:35,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:16:35,249 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 23:16:35,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2100981405] [2020-10-24 23:16:35,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:35,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-24 23:16:35,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722919822] [2020-10-24 23:16:35,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-24 23:16:35,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:16:35,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-24 23:16:35,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-24 23:16:35,276 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-10-24 23:16:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:35,299 INFO L93 Difference]: Finished difference Result 75 states and 119 transitions. [2020-10-24 23:16:35,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-24 23:16:35,301 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-10-24 23:16:35,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:35,313 INFO L225 Difference]: With dead ends: 75 [2020-10-24 23:16:35,313 INFO L226 Difference]: Without dead ends: 35 [2020-10-24 23:16:35,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 23:16:35,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-24 23:16:35,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-24 23:16:35,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-24 23:16:35,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-10-24 23:16:35,362 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-10-24 23:16:35,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:35,363 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-10-24 23:16:35,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-24 23:16:35,364 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-10-24 23:16:35,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-24 23:16:35,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:35,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:35,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-24 23:16:35,581 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:35,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:35,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-10-24 23:16:35,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:35,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139865641] [2020-10-24 23:16:35,584 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 [2020-10-24 23:16:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:35,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-24 23:16:35,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:16:35,864 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 23:16:35,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:16:35,993 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 23:16:35,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139865641] [2020-10-24 23:16:35,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:35,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-24 23:16:35,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503959747] [2020-10-24 23:16:35,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 23:16:35,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:16:35,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 23:16:35,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-24 23:16:35,999 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 8 states. [2020-10-24 23:16:36,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:36,557 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2020-10-24 23:16:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-24 23:16:36,558 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-24 23:16:36,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:36,559 INFO L225 Difference]: With dead ends: 59 [2020-10-24 23:16:36,559 INFO L226 Difference]: Without dead ends: 34 [2020-10-24 23:16:36,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-24 23:16:36,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-24 23:16:36,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2020-10-24 23:16:36,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-24 23:16:36,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-24 23:16:36,568 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2020-10-24 23:16:36,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:36,568 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-24 23:16:36,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 23:16:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-24 23:16:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-24 23:16:36,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:36,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:36,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-24 23:16:36,789 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:36,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:36,791 INFO L82 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2020-10-24 23:16:36,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:36,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358205095] [2020-10-24 23:16:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-24 23:16:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 23:16:36,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-24 23:16:36,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-24 23:16:37,077 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 23:16:37,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-24 23:16:37,836 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-10-24 23:16:38,138 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 23:16:38,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358205095] [2020-10-24 23:16:38,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-24 23:16:38,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-10-24 23:16:38,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369544765] [2020-10-24 23:16:38,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 23:16:38,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-24 23:16:38,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 23:16:38,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 23:16:38,142 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2020-10-24 23:16:38,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 23:16:38,543 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-10-24 23:16:38,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 23:16:38,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-24 23:16:38,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 23:16:38,557 INFO L225 Difference]: With dead ends: 34 [2020-10-24 23:16:38,557 INFO L226 Difference]: Without dead ends: 22 [2020-10-24 23:16:38,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-24 23:16:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-24 23:16:38,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-24 23:16:38,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-24 23:16:38,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-24 23:16:38,563 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-10-24 23:16:38,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 23:16:38,564 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-24 23:16:38,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 23:16:38,564 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-24 23:16:38,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-24 23:16:38,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 23:16:38,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 23:16:38,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-24 23:16:38,778 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 23:16:38,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 23:16:38,779 INFO L82 PathProgramCache]: Analyzing trace with hash 461150674, now seen corresponding path program 1 times [2020-10-24 23:16:38,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-24 23:16:38,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019873695] [2020-10-24 23:16:38,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-24 23:16:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:38,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 23:16:39,253 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 23:16:39,310 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-24 23:16:39,310 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 23:16:39,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-24 23:16:39,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:16:39 BoogieIcfgContainer [2020-10-24 23:16:39,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 23:16:39,555 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-24 23:16:39,555 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-24 23:16:39,555 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-24 23:16:39,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:16:34" (3/4) ... [2020-10-24 23:16:39,558 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-24 23:16:39,632 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-24 23:16:39,632 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-24 23:16:39,634 INFO L168 Benchmark]: Toolchain (without parser) took 6835.46 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 27.9 MB in the beginning and 35.9 MB in the end (delta: -8.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:39,635 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory was 35.8 MB in the beginning and 35.8 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-24 23:16:39,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.87 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 29.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:39,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 90.72 ms. Allocated memory is still 50.3 MB. Free memory was 29.0 MB in the beginning and 27.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:39,637 INFO L168 Benchmark]: Boogie Preprocessor took 92.16 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 25.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:39,638 INFO L168 Benchmark]: RCFGBuilder took 1627.95 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 25.4 MB in the beginning and 44.7 MB in the end (delta: -19.3 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:39,639 INFO L168 Benchmark]: TraceAbstraction took 4564.25 ms. Allocated memory is still 65.0 MB. Free memory was 44.2 MB in the beginning and 39.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:39,640 INFO L168 Benchmark]: Witness Printer took 77.70 ms. Allocated memory is still 65.0 MB. Free memory was 39.3 MB in the beginning and 35.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-24 23:16:39,644 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 50.3 MB. Free memory was 35.8 MB in the beginning and 35.8 MB in the end (delta: 39.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.87 ms. Allocated memory is still 50.3 MB. Free memory was 27.3 MB in the beginning and 29.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 90.72 ms. Allocated memory is still 50.3 MB. Free memory was 29.0 MB in the beginning and 27.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 92.16 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 25.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1627.95 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 25.4 MB in the beginning and 44.7 MB in the end (delta: -19.3 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4564.25 ms. Allocated memory is still 65.0 MB. Free memory was 44.2 MB in the beginning and 39.3 MB in the end (delta: 4.9 MB). Peak memory consumption was 3.1 MB. Max. memory is 16.1 GB. * Witness Printer took 77.70 ms. Allocated memory is still 65.0 MB. Free memory was 39.3 MB in the beginning and 35.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 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: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND TRUE j0 < 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L30] COND TRUE huge_floor + x > 0.0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] COND FALSE !(i0 >= 0) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L33] COND TRUE ((i0 & 0x7fffffff) | i1) != 0 [L34] i0 = 0xbff00000 [L35] i1 = 0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L73] ieee_double_shape_type iw_u; [L74] iw_u.parts.msw = (i0) [L75] iw_u.parts.lsw = (i1) [L76] EXPR iw_u.value [L76] (x) = iw_u.value [L78] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1052c.c", 3, "reach_error") VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 105 SDslu, 59 SDs, 0 SdLazy, 30 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 70 ConstructedInterpolants, 5 QuantifiedInterpolants, 3734 SizeOfPredicates, 11 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...