./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 096883e9 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1131a.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 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 ........................................................................................................................................................................................................................................................................................................................ 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_1131a.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 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 .................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-096883e [2020-12-01 23:20:51,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:51,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:51,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:51,664 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:51,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:51,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:51,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:51,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:51,691 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:51,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:51,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:51,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:51,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:51,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:51,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:51,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:51,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:51,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:51,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:51,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:51,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:51,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:51,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:51,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:51,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:51,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:51,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:51,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:51,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:51,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:51,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:51,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:51,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:51,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:51,747 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:51,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:51,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:51,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:51,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:51,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:51,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:20:51,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:51,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:51,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:51,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:51,780 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:51,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:51,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:51,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:20:51,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:51,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:51,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:51,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:51,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:51,782 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:51,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:51,783 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:51,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:51,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:51,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:51,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:51,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:51,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:51,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:51,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:51,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:51,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:20:51,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:20:51,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:51,786 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:51,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-12-01 23:20:52,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:52,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:52,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:52,266 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:52,267 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:52,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-12-01 23:20:52,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db26d64f/fc9a8c7046904d66aa17c8f35b10780d/FLAG48a0e0efc [2020-12-01 23:20:53,058 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:53,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-12-01 23:20:53,072 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db26d64f/fc9a8c7046904d66aa17c8f35b10780d/FLAG48a0e0efc [2020-12-01 23:20:53,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0db26d64f/fc9a8c7046904d66aa17c8f35b10780d [2020-12-01 23:20:53,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:53,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:53,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:53,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:53,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:53,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:53" (1/1) ... [2020-12-01 23:20:53,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544b1a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53, skipping insertion in model container [2020-12-01 23:20:53,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:53" (1/1) ... [2020-12-01 23:20:53,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:53,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:53,676 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c[4189,4202] [2020-12-01 23:20:53,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:53,695 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:53,753 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c[4189,4202] [2020-12-01 23:20:53,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:53,774 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:53,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53 WrapperNode [2020-12-01 23:20:53,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:53,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:53,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:53,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:53,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53" (1/1) ... [2020-12-01 23:20:53,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53" (1/1) ... [2020-12-01 23:20:53,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:53,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:53,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:53,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:53,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53" (1/1) ... [2020-12-01 23:20:53,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53" (1/1) ... [2020-12-01 23:20:53,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53" (1/1) ... [2020-12-01 23:20:53,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53" (1/1) ... [2020-12-01 23:20:53,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53" (1/1) ... [2020-12-01 23:20:53,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53" (1/1) ... [2020-12-01 23:20:53,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53" (1/1) ... [2020-12-01 23:20:53,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:53,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:53,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:53,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:53,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:54,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:20:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 23:20:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 23:20:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 23:20:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:54,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 23:20:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-01 23:20:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:54,741 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:54,741 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-01 23:20:54,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:54 BoogieIcfgContainer [2020-12-01 23:20:54,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:54,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:54,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:54,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:54,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:53" (1/3) ... [2020-12-01 23:20:54,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b01ce41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:54, skipping insertion in model container [2020-12-01 23:20:54,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:53" (2/3) ... [2020-12-01 23:20:54,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b01ce41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:54, skipping insertion in model container [2020-12-01 23:20:54,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:54" (3/3) ... [2020-12-01 23:20:54,752 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-12-01 23:20:54,768 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:54,773 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:54,786 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:54,814 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:54,814 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:54,814 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:54,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:54,815 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:54,815 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:54,815 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:54,815 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:54,832 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-12-01 23:20:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 23:20:54,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:54,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:54,839 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:54,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:54,845 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-12-01 23:20:54,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:54,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231598561] [2020-12-01 23:20:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:55,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:55,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231598561] [2020-12-01 23:20:55,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:55,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 23:20:55,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516958304] [2020-12-01 23:20:55,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:55,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:20:55,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:55,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:55,045 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-12-01 23:20:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:55,072 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2020-12-01 23:20:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:55,074 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-01 23:20:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:55,086 INFO L225 Difference]: With dead ends: 118 [2020-12-01 23:20:55,086 INFO L226 Difference]: Without dead ends: 56 [2020-12-01 23:20:55,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:55,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-01 23:20:55,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-01 23:20:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-01 23:20:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-12-01 23:20:55,139 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-12-01 23:20:55,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:55,139 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-12-01 23:20:55,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:55,140 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-12-01 23:20:55,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 23:20:55,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:55,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:55,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:20:55,141 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:55,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:55,143 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-12-01 23:20:55,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:55,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113990104] [2020-12-01 23:20:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:55,262 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:55,349 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:55,391 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 23:20:55,392 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:20:55,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 23:20:55,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:20:55 BoogieIcfgContainer [2020-12-01 23:20:55,440 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:20:55,441 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:20:55,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:20:55,442 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:20:55,443 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:54" (3/4) ... [2020-12-01 23:20:55,447 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 23:20:55,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:20:55,453 INFO L168 Benchmark]: Toolchain (without parser) took 2090.56 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.8 MB in the beginning and 37.6 MB in the end (delta: -10.9 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:55,456 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 41.9 MB. Free memory was 20.1 MB in the beginning and 20.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:55,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.01 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 24.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:55,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.72 ms. Allocated memory is still 50.3 MB. Free memory was 24.2 MB in the beginning and 33.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:55,460 INFO L168 Benchmark]: Boogie Preprocessor took 73.05 ms. Allocated memory is still 50.3 MB. Free memory was 33.2 MB in the beginning and 31.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:55,462 INFO L168 Benchmark]: RCFGBuilder took 804.03 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 31.0 MB in the beginning and 32.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:55,463 INFO L168 Benchmark]: TraceAbstraction took 695.54 ms. Allocated memory is still 60.8 MB. Free memory was 32.1 MB in the beginning and 38.0 MB in the end (delta: -5.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:55,466 INFO L168 Benchmark]: Witness Printer took 6.17 ms. Allocated memory is still 60.8 MB. Free memory was 38.0 MB in the beginning and 37.6 MB in the end (delta: 359.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:55,483 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 41.9 MB. Free memory was 20.1 MB in the beginning and 20.0 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 415.01 ms. Allocated memory is still 50.3 MB. Free memory was 26.6 MB in the beginning and 24.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 88.72 ms. Allocated memory is still 50.3 MB. Free memory was 24.2 MB in the beginning and 33.2 MB in the end (delta: -9.0 MB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.05 ms. Allocated memory is still 50.3 MB. Free memory was 33.2 MB in the beginning and 31.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 804.03 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 31.0 MB in the beginning and 32.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 15.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 695.54 ms. Allocated memory is still 60.8 MB. Free memory was 32.1 MB in the beginning and 38.0 MB in the end (delta: -5.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * Witness Printer took 6.17 ms. Allocated memory is still 60.8 MB. Free memory was 38.0 MB in the beginning and 37.6 MB in the end (delta: 359.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L166] __int32_t hx; VAL [one_fmod=1, Zero_fmod={9:0}] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={9:0}] [L185] COND TRUE isfinite_double(x) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={9:0}] [L191] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 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: 87 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=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-096883e [2020-12-01 23:20:58,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:58,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:58,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:58,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:58,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:58,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:58,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:58,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:58,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:58,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:58,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:58,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:58,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:58,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:58,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:58,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:58,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:58,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:58,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:58,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:58,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:58,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:58,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:58,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:58,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:58,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:58,295 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:58,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:58,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:58,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:58,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:58,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:58,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:58,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:58,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:58,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:58,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:58,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:58,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:58,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:58,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 23:20:58,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:58,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:58,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:58,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:58,352 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:58,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:58,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:58,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:58,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:58,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:58,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:58,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:58,355 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:20:58,355 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:20:58,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:58,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:58,358 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:58,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:58,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:58,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:58,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:58,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:58,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:58,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:58,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:58,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:58,359 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:20:58,360 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:20:58,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:58,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:58,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:20:58,360 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4554d2f8799ffeb9d5e04122bbb0f9e816b3f3f5 [2020-12-01 23:20:58,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:58,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:58,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:58,843 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:58,844 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:58,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-12-01 23:20:58,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/859e4a4dd/8908826d69d54d29b9ae8ee87903de92/FLAG08fd8c950 [2020-12-01 23:20:59,749 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:59,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2020-12-01 23:20:59,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/859e4a4dd/8908826d69d54d29b9ae8ee87903de92/FLAG08fd8c950 [2020-12-01 23:21:00,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/859e4a4dd/8908826d69d54d29b9ae8ee87903de92 [2020-12-01 23:21:00,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:21:00,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:21:00,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:21:00,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:21:00,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:21:00,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:21:00" (1/1) ... [2020-12-01 23:21:00,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc63a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00, skipping insertion in model container [2020-12-01 23:21:00,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:21:00" (1/1) ... [2020-12-01 23:21:00,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:21:00,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:21:00,398 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c[4189,4202] [2020-12-01 23:21:00,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:21:00,432 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:21:00,504 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c[4189,4202] [2020-12-01 23:21:00,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:21:00,538 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:21:00,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00 WrapperNode [2020-12-01 23:21:00,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:21:00,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:21:00,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:21:00,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:21:00,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00" (1/1) ... [2020-12-01 23:21:00,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00" (1/1) ... [2020-12-01 23:21:00,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:21:00,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:21:00,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:21:00,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:21:00,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00" (1/1) ... [2020-12-01 23:21:00,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00" (1/1) ... [2020-12-01 23:21:00,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00" (1/1) ... [2020-12-01 23:21:00,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00" (1/1) ... [2020-12-01 23:21:00,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00" (1/1) ... [2020-12-01 23:21:00,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00" (1/1) ... [2020-12-01 23:21:00,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00" (1/1) ... [2020-12-01 23:21:00,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:21:00,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:21:00,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:21:00,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:21:00,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:21:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-01 23:21:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 23:21:00,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:21:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:21:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-12-01 23:21:00,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 23:21:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:21:00,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:21:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 23:21:00,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:21:06,644 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:21:06,645 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-01 23:21:06,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:21:06 BoogieIcfgContainer [2020-12-01 23:21:06,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:21:06,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:21:06,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:21:06,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:21:06,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:21:00" (1/3) ... [2020-12-01 23:21:06,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e53c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:21:06, skipping insertion in model container [2020-12-01 23:21:06,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:00" (2/3) ... [2020-12-01 23:21:06,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e53c6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:21:06, skipping insertion in model container [2020-12-01 23:21:06,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:21:06" (3/3) ... [2020-12-01 23:21:06,668 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-12-01 23:21:06,691 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:21:06,697 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:21:06,739 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:21:06,801 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:21:06,801 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:21:06,802 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:21:06,802 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:21:06,802 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:21:06,802 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:21:06,802 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:21:06,802 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:21:06,821 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-12-01 23:21:06,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 23:21:06,827 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:06,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:06,829 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:21:06,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:06,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-12-01 23:21:06,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:21:06,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821573945] [2020-12-01 23:21:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 23:21:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:07,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 23:21:07,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:07,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:21:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:07,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821573945] [2020-12-01 23:21:07,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:21:07,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 23:21:07,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199913683] [2020-12-01 23:21:07,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:21:07,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:21:07,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:21:07,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:21:07,952 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-12-01 23:21:08,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:08,001 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2020-12-01 23:21:08,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:21:08,004 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-01 23:21:08,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:08,026 INFO L225 Difference]: With dead ends: 118 [2020-12-01 23:21:08,026 INFO L226 Difference]: Without dead ends: 56 [2020-12-01 23:21:08,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:21:08,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-01 23:21:08,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-01 23:21:08,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-01 23:21:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-12-01 23:21:08,075 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-12-01 23:21:08,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:08,076 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-12-01 23:21:08,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:21:08,076 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-12-01 23:21:08,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 23:21:08,077 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:08,077 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:08,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:21:08,285 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:21:08,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:08,287 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-12-01 23:21:08,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:21:08,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153825278] [2020-12-01 23:21:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 23:21:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:21:09,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:21:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:21:11,064 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:21:11,204 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 23:21:11,204 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:21:11,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:21:11,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:21:11 BoogieIcfgContainer [2020-12-01 23:21:11,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:21:11,463 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:21:11,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:21:11,464 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:21:11,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:21:06" (3/4) ... [2020-12-01 23:21:11,468 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:21:11,577 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:21:11,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:21:11,580 INFO L168 Benchmark]: Toolchain (without parser) took 11517.33 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 18.8 MB in the beginning and 21.0 MB in the end (delta: -2.1 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:11,581 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 41.9 MB. Free memory was 24.9 MB in the beginning and 24.9 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:21:11,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.60 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 18.7 MB in the beginning and 33.3 MB in the end (delta: -14.7 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:11,583 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.80 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 31.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:11,583 INFO L168 Benchmark]: Boogie Preprocessor took 82.77 ms. Allocated memory is still 52.4 MB. Free memory was 31.0 MB in the beginning and 28.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:11,584 INFO L168 Benchmark]: RCFGBuilder took 5929.89 ms. Allocated memory is still 52.4 MB. Free memory was 28.6 MB in the beginning and 31.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:11,585 INFO L168 Benchmark]: TraceAbstraction took 4813.16 ms. Allocated memory is still 52.4 MB. Free memory was 30.9 MB in the beginning and 23.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:11,585 INFO L168 Benchmark]: Witness Printer took 114.37 ms. Allocated memory is still 52.4 MB. Free memory was 23.6 MB in the beginning and 21.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:11,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 41.9 MB. Free memory was 24.9 MB in the beginning and 24.9 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 472.60 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 18.7 MB in the beginning and 33.3 MB in the end (delta: -14.7 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.80 ms. Allocated memory is still 52.4 MB. Free memory was 33.3 MB in the beginning and 31.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.77 ms. Allocated memory is still 52.4 MB. Free memory was 31.0 MB in the beginning and 28.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5929.89 ms. Allocated memory is still 52.4 MB. Free memory was 28.6 MB in the beginning and 31.4 MB in the end (delta: -2.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4813.16 ms. Allocated memory is still 52.4 MB. Free memory was 30.9 MB in the beginning and 23.6 MB in the end (delta: 7.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Witness Printer took 114.37 ms. Allocated memory is still 52.4 MB. Free memory was 23.6 MB in the beginning and 21.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 191]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L166] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L185] COND TRUE isfinite_double(x) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L191] reach_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 2.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 55 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...