./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cbb939d5 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012a.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 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 ................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012a.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 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 ............................................................................................................................................................................................................................................................................................................... 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-cbb939d [2020-11-23 16:33:08,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 16:33:08,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 16:33:08,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 16:33:08,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 16:33:08,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 16:33:08,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 16:33:08,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 16:33:08,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 16:33:08,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 16:33:08,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 16:33:08,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 16:33:08,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 16:33:08,601 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 16:33:08,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 16:33:08,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 16:33:08,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 16:33:08,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 16:33:08,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 16:33:08,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 16:33:08,626 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 16:33:08,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 16:33:08,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 16:33:08,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 16:33:08,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 16:33:08,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 16:33:08,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 16:33:08,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 16:33:08,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 16:33:08,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 16:33:08,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 16:33:08,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 16:33:08,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 16:33:08,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 16:33:08,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 16:33:08,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 16:33:08,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 16:33:08,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 16:33:08,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 16:33:08,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 16:33:08,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 16:33:08,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-23 16:33:08,723 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 16:33:08,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 16:33:08,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 16:33:08,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 16:33:08,729 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 16:33:08,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 16:33:08,730 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 16:33:08,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-23 16:33:08,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 16:33:08,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 16:33:08,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 16:33:08,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 16:33:08,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 16:33:08,733 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 16:33:08,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 16:33:08,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 16:33:08,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 16:33:08,734 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 16:33:08,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 16:33:08,735 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 16:33:08,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 16:33:08,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 16:33:08,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 16:33:08,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 16:33:08,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 16:33:08,736 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-23 16:33:08,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-23 16:33:08,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 16:33:08,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 16:33:08,738 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 [2020-11-23 16:33:09,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 16:33:09,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 16:33:09,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 16:33:09,216 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 16:33:09,217 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 16:33:09,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c [2020-11-23 16:33:09,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965ad30dd/05bbdb1be8044c2a8c33093611e54e8c/FLAGe3ff9d844 [2020-11-23 16:33:10,043 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 16:33:10,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c [2020-11-23 16:33:10,052 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965ad30dd/05bbdb1be8044c2a8c33093611e54e8c/FLAGe3ff9d844 [2020-11-23 16:33:10,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965ad30dd/05bbdb1be8044c2a8c33093611e54e8c [2020-11-23 16:33:10,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 16:33:10,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 16:33:10,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 16:33:10,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 16:33:10,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 16:33:10,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:33:10" (1/1) ... [2020-11-23 16:33:10,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18dd70a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10, skipping insertion in model container [2020-11-23 16:33:10,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:33:10" (1/1) ... [2020-11-23 16:33:10,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 16:33:10,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 16:33:10,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:33:10,690 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 16:33:10,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:33:10,780 INFO L208 MainTranslator]: Completed translation [2020-11-23 16:33:10,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10 WrapperNode [2020-11-23 16:33:10,782 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 16:33:10,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 16:33:10,784 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 16:33:10,784 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 16:33:10,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10" (1/1) ... [2020-11-23 16:33:10,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10" (1/1) ... [2020-11-23 16:33:10,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 16:33:10,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 16:33:10,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 16:33:10,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 16:33:10,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10" (1/1) ... [2020-11-23 16:33:10,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10" (1/1) ... [2020-11-23 16:33:10,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10" (1/1) ... [2020-11-23 16:33:10,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10" (1/1) ... [2020-11-23 16:33:10,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10" (1/1) ... [2020-11-23 16:33:10,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10" (1/1) ... [2020-11-23 16:33:10,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10" (1/1) ... [2020-11-23 16:33:10,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 16:33:10,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 16:33:10,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 16:33:10,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 16:33:10,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10" (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 [2020-11-23 16:33:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-23 16:33:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 16:33:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-23 16:33:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-23 16:33:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-23 16:33:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 16:33:11,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 16:33:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-23 16:33:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-23 16:33:11,493 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 16:33:11,493 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-23 16:33:11,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:33:11 BoogieIcfgContainer [2020-11-23 16:33:11,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 16:33:11,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 16:33:11,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 16:33:11,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 16:33:11,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:33:10" (1/3) ... [2020-11-23 16:33:11,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225bfac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:33:11, skipping insertion in model container [2020-11-23 16:33:11,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:10" (2/3) ... [2020-11-23 16:33:11,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225bfac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:33:11, skipping insertion in model container [2020-11-23 16:33:11,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:33:11" (3/3) ... [2020-11-23 16:33:11,506 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-11-23 16:33:11,523 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 16:33:11,527 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 16:33:11,543 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 16:33:11,575 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 16:33:11,575 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 16:33:11,575 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 16:33:11,575 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 16:33:11,576 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 16:33:11,576 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 16:33:11,576 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 16:33:11,576 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 16:33:11,594 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-23 16:33:11,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-23 16:33:11,601 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:33:11,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:33:11,602 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:33:11,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:33:11,610 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-11-23 16:33:11,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 16:33:11,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690541081] [2020-11-23 16:33:11,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 16:33:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:33:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:33:11,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690541081] [2020-11-23 16:33:11,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:33:11,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-23 16:33:11,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035360374] [2020-11-23 16:33:11,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-23 16:33:11,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-23 16:33:11,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-23 16:33:11,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 16:33:11,827 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-23 16:33:11,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:33:11,848 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-23 16:33:11,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-23 16:33:11,849 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-23 16:33:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:33:11,860 INFO L225 Difference]: With dead ends: 35 [2020-11-23 16:33:11,860 INFO L226 Difference]: Without dead ends: 15 [2020-11-23 16:33:11,864 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 [2020-11-23 16:33:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-23 16:33:11,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-23 16:33:11,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-23 16:33:11,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-23 16:33:11,903 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-11-23 16:33:11,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:33:11,904 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-23 16:33:11,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-23 16:33:11,904 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-23 16:33:11,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-23 16:33:11,905 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:33:11,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:33:11,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-23 16:33:11,906 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:33:11,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:33:11,907 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-11-23 16:33:11,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-23 16:33:11,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511674039] [2020-11-23 16:33:11,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-23 16:33:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:33:12,028 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:33:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:33:12,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:33:12,225 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-23 16:33:12,225 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-23 16:33:12,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-23 16:33:12,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:33:12 BoogieIcfgContainer [2020-11-23 16:33:12,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 16:33:12,277 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 16:33:12,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 16:33:12,278 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 16:33:12,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:33:11" (3/4) ... [2020-11-23 16:33:12,283 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-23 16:33:12,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 16:33:12,293 INFO L168 Benchmark]: Toolchain (without parser) took 1874.73 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 22.8 MB in the beginning and 35.8 MB in the end (delta: -13.0 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:12,294 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 46.1 MB. Free memory was 26.2 MB in the beginning and 26.1 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:33:12,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.85 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 22.2 MB in the beginning and 35.5 MB in the end (delta: -13.3 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:12,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.60 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 33.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:33:12,298 INFO L168 Benchmark]: Boogie Preprocessor took 40.92 ms. Allocated memory is still 58.7 MB. Free memory was 33.8 MB in the beginning and 32.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:33:12,299 INFO L168 Benchmark]: RCFGBuilder took 574.68 ms. Allocated memory is still 58.7 MB. Free memory was 32.3 MB in the beginning and 30.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:12,299 INFO L168 Benchmark]: TraceAbstraction took 779.44 ms. Allocated memory is still 58.7 MB. Free memory was 30.4 MB in the beginning and 36.1 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:12,300 INFO L168 Benchmark]: Witness Printer took 7.14 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 35.8 MB in the end (delta: 286.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:33:12,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 46.1 MB. Free memory was 26.2 MB in the beginning and 26.1 MB in the end (delta: 52.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 363.85 ms. Allocated memory was 46.1 MB in the beginning and 58.7 MB in the end (delta: 12.6 MB). Free memory was 22.2 MB in the beginning and 35.5 MB in the end (delta: -13.3 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.60 ms. Allocated memory is still 58.7 MB. Free memory was 35.5 MB in the beginning and 33.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.92 ms. Allocated memory is still 58.7 MB. Free memory was 33.8 MB in the beginning and 32.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 574.68 ms. Allocated memory is still 58.7 MB. Free memory was 32.3 MB in the beginning and 30.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 779.44 ms. Allocated memory is still 58.7 MB. Free memory was 30.4 MB in the beginning and 36.1 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Witness Printer took 7.14 ms. Allocated memory is still 58.7 MB. Free memory was 36.1 MB in the beginning and 35.8 MB in the end (delta: 286.8 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 bitwiseOr at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = 1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 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=19occurred 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, 25 NumberOfCodeBlocks, 25 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-cbb939d [2020-11-23 16:33:15,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-23 16:33:15,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-23 16:33:15,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-23 16:33:15,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-23 16:33:15,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-23 16:33:15,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-23 16:33:15,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-23 16:33:15,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-23 16:33:15,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-23 16:33:15,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-23 16:33:15,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-23 16:33:15,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-23 16:33:15,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-23 16:33:15,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-23 16:33:15,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-23 16:33:15,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-23 16:33:15,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-23 16:33:15,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-23 16:33:15,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-23 16:33:15,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-23 16:33:15,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-23 16:33:15,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-23 16:33:15,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-23 16:33:15,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-23 16:33:15,171 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-23 16:33:15,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-23 16:33:15,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-23 16:33:15,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-23 16:33:15,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-23 16:33:15,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-23 16:33:15,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-23 16:33:15,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-23 16:33:15,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-23 16:33:15,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-23 16:33:15,190 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-23 16:33:15,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-23 16:33:15,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-23 16:33:15,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-23 16:33:15,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-23 16:33:15,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-23 16:33:15,202 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-23 16:33:15,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-23 16:33:15,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-23 16:33:15,276 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-23 16:33:15,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-23 16:33:15,279 INFO L138 SettingsManager]: * Use SBE=true [2020-11-23 16:33:15,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-23 16:33:15,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-23 16:33:15,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-23 16:33:15,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-23 16:33:15,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-23 16:33:15,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-23 16:33:15,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-23 16:33:15,284 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-23 16:33:15,284 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-23 16:33:15,284 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-23 16:33:15,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-23 16:33:15,285 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-23 16:33:15,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-23 16:33:15,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-23 16:33:15,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-23 16:33:15,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-23 16:33:15,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-23 16:33:15,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-23 16:33:15,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-23 16:33:15,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-23 16:33:15,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-23 16:33:15,288 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-23 16:33:15,288 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-23 16:33:15,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-23 16:33:15,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-23 16:33:15,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-23 16:33:15,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1df0ba28598e6a59f0398ecb9ba7a5975e0ea337 [2020-11-23 16:33:15,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-23 16:33:15,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-23 16:33:15,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-23 16:33:15,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-23 16:33:15,816 INFO L275 PluginConnector]: CDTParser initialized [2020-11-23 16:33:15,818 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c [2020-11-23 16:33:15,921 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d3db689/f579fb98e9474467a5befe20b01cc468/FLAGf2c455956 [2020-11-23 16:33:16,679 INFO L306 CDTParser]: Found 1 translation units. [2020-11-23 16:33:16,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c [2020-11-23 16:33:16,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d3db689/f579fb98e9474467a5befe20b01cc468/FLAGf2c455956 [2020-11-23 16:33:17,006 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24d3db689/f579fb98e9474467a5befe20b01cc468 [2020-11-23 16:33:17,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-23 16:33:17,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-23 16:33:17,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-23 16:33:17,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-23 16:33:17,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-23 16:33:17,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:33:17" (1/1) ... [2020-11-23 16:33:17,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46214059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17, skipping insertion in model container [2020-11-23 16:33:17,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:33:17" (1/1) ... [2020-11-23 16:33:17,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-23 16:33:17,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-23 16:33:17,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:33:17,331 INFO L203 MainTranslator]: Completed pre-run [2020-11-23 16:33:17,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-23 16:33:17,411 INFO L208 MainTranslator]: Completed translation [2020-11-23 16:33:17,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17 WrapperNode [2020-11-23 16:33:17,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-23 16:33:17,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-23 16:33:17,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-23 16:33:17,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-23 16:33:17,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17" (1/1) ... [2020-11-23 16:33:17,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17" (1/1) ... [2020-11-23 16:33:17,460 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-23 16:33:17,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-23 16:33:17,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-23 16:33:17,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-23 16:33:17,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17" (1/1) ... [2020-11-23 16:33:17,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17" (1/1) ... [2020-11-23 16:33:17,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17" (1/1) ... [2020-11-23 16:33:17,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17" (1/1) ... [2020-11-23 16:33:17,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17" (1/1) ... [2020-11-23 16:33:17,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17" (1/1) ... [2020-11-23 16:33:17,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17" (1/1) ... [2020-11-23 16:33:17,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-23 16:33:17,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-23 16:33:17,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-23 16:33:17,519 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-23 16:33:17,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17" (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 [2020-11-23 16:33:17,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-23 16:33:17,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-23 16:33:17,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-23 16:33:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-23 16:33:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-23 16:33:17,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-23 16:33:17,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-23 16:33:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-23 16:33:17,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-23 16:33:18,332 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-23 16:33:18,333 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-23 16:33:18,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:33:18 BoogieIcfgContainer [2020-11-23 16:33:18,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-23 16:33:18,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-23 16:33:18,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-23 16:33:18,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-23 16:33:18,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:33:17" (1/3) ... [2020-11-23 16:33:18,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0d4111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:33:18, skipping insertion in model container [2020-11-23 16:33:18,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:33:17" (2/3) ... [2020-11-23 16:33:18,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0d4111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:33:18, skipping insertion in model container [2020-11-23 16:33:18,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:33:18" (3/3) ... [2020-11-23 16:33:18,358 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-11-23 16:33:18,378 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-23 16:33:18,383 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-23 16:33:18,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-23 16:33:18,450 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-23 16:33:18,451 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-23 16:33:18,451 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-23 16:33:18,451 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-23 16:33:18,452 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-23 16:33:18,452 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-23 16:33:18,452 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-23 16:33:18,452 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-23 16:33:18,469 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-23 16:33:18,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-23 16:33:18,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:33:18,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:33:18,480 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:33:18,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:33:18,488 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-11-23 16:33:18,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:33:18,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411886811] [2020-11-23 16:33:18,505 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 [2020-11-23 16:33:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-23 16:33:18,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-23 16:33:18,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-23 16:33:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:33:18,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-23 16:33:18,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-23 16:33:18,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411886811] [2020-11-23 16:33:18,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-23 16:33:18,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-23 16:33:18,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590169890] [2020-11-23 16:33:18,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-23 16:33:18,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-23 16:33:18,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-23 16:33:18,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-23 16:33:18,692 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-23 16:33:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-23 16:33:18,711 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-23 16:33:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-23 16:33:18,713 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-23 16:33:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-23 16:33:18,730 INFO L225 Difference]: With dead ends: 35 [2020-11-23 16:33:18,731 INFO L226 Difference]: Without dead ends: 15 [2020-11-23 16:33:18,734 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 [2020-11-23 16:33:18,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-23 16:33:18,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-23 16:33:18,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-23 16:33:18,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-23 16:33:18,773 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-11-23 16:33:18,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-23 16:33:18,773 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-23 16:33:18,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-23 16:33:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-23 16:33:18,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-23 16:33:18,775 INFO L414 BasicCegarLoop]: Found error trace [2020-11-23 16:33:18,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-23 16:33:18,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-23 16:33:18,993 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-23 16:33:18,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-23 16:33:18,995 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-11-23 16:33:18,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-23 16:33:18,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488355604] [2020-11-23 16:33:18,998 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 [2020-11-23 16:33:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:33:19,248 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:33:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-23 16:33:19,426 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-23 16:33:19,484 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-23 16:33:19,484 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-23 16:33:19,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-23 16:33:19,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:33:19 BoogieIcfgContainer [2020-11-23 16:33:19,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-23 16:33:19,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-23 16:33:19,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-23 16:33:19,721 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-23 16:33:19,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:33:18" (3/4) ... [2020-11-23 16:33:19,724 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-23 16:33:19,790 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-11-23 16:33:19,791 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-23 16:33:19,794 INFO L168 Benchmark]: Toolchain (without parser) took 2781.27 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.1 MB in the beginning and 20.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:19,795 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 48.2 MB. Free memory was 30.6 MB in the beginning and 30.6 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:33:19,795 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.50 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 26.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:19,800 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.26 ms. Allocated memory is still 48.2 MB. Free memory was 26.7 MB in the beginning and 25.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:19,801 INFO L168 Benchmark]: Boogie Preprocessor took 54.80 ms. Allocated memory is still 48.2 MB. Free memory was 25.0 MB in the beginning and 23.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-23 16:33:19,802 INFO L168 Benchmark]: RCFGBuilder took 818.83 ms. Allocated memory is still 48.2 MB. Free memory was 23.5 MB in the beginning and 19.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:19,803 INFO L168 Benchmark]: TraceAbstraction took 1371.74 ms. Allocated memory is still 58.7 MB. Free memory was 41.8 MB in the beginning and 22.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:19,804 INFO L168 Benchmark]: Witness Printer took 69.92 ms. Allocated memory is still 58.7 MB. Free memory was 22.7 MB in the beginning and 20.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-23 16:33:19,808 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 48.2 MB. Free memory was 30.6 MB in the beginning and 30.6 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 386.50 ms. Allocated memory is still 48.2 MB. Free memory was 24.4 MB in the beginning and 26.9 MB in the end (delta: -2.4 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.26 ms. Allocated memory is still 48.2 MB. Free memory was 26.7 MB in the beginning and 25.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.80 ms. Allocated memory is still 48.2 MB. Free memory was 25.0 MB in the beginning and 23.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 818.83 ms. Allocated memory is still 48.2 MB. Free memory was 23.5 MB in the beginning and 19.9 MB in the end (delta: 3.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1371.74 ms. Allocated memory is still 58.7 MB. Free memory was 41.8 MB in the beginning and 22.9 MB in the end (delta: 18.9 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. * Witness Printer took 69.92 ms. Allocated memory is still 58.7 MB. Free memory was 22.7 MB in the beginning and 20.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L70] double x = 1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 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...