./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 f470102c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e3ed9850bae7d066050d32134f925a24fb3772d ............................................................................................................................................................................................................................................................................................................ 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 -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e3ed9850bae7d066050d32134f925a24fb3772d .......................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-11-28 16:49:49,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:49:49,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:49:49,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:49:49,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:49:49,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:49:49,772 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:49:49,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:49:49,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:49:49,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:49:49,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:49:49,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:49:49,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:49:49,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:49:49,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:49:49,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:49:49,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:49:49,786 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:49:49,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:49:49,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:49:49,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:49:49,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:49:49,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:49:49,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:49:49,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:49:49,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:49:49,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:49:49,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:49:49,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:49:49,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:49:49,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:49:49,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:49:49,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:49:49,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:49:49,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:49:49,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:49:49,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:49:49,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:49:49,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:49:49,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:49:49,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:49:49,811 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:49:49,827 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:49:49,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:49:49,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:49:49,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:49:49,829 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:49:49,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:49:49,830 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:49:49,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:49:49,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:49:49,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:49:49,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:49:49,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:49:49,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:49:49,832 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:49:49,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:49:49,832 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:49:49,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:49:49,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:49:49,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:49:49,834 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:49:49,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:49:49,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:49:49,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:49:49,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:49:49,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:49:49,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:49:49,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:49:49,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:49:49,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:49:49,836 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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(__VERIFIER_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 -> 9e3ed9850bae7d066050d32134f925a24fb3772d [2019-11-28 16:49:50,175 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:49:50,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:49:50,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:49:50,194 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:49:50,195 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:49:50,196 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-11-28 16:49:50,266 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/430541257/4f4045b8c56940eb88132c0a16e861f1/FLAG971788e9d [2019-11-28 16:49:50,762 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:49:50,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-11-28 16:49:50,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/430541257/4f4045b8c56940eb88132c0a16e861f1/FLAG971788e9d [2019-11-28 16:49:51,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/430541257/4f4045b8c56940eb88132c0a16e861f1 [2019-11-28 16:49:51,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:49:51,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:49:51,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:51,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:49:51,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:49:51,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:51" (1/1) ... [2019-11-28 16:49:51,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4091a57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51, skipping insertion in model container [2019-11-28 16:49:51,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:51" (1/1) ... [2019-11-28 16:49:51,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:49:51,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:49:51,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:51,559 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:49:51,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:51,670 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:49:51,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51 WrapperNode [2019-11-28 16:49:51,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:51,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:51,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:49:51,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:49:51,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51" (1/1) ... [2019-11-28 16:49:51,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51" (1/1) ... [2019-11-28 16:49:51,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:51,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:49:51,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:49:51,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:49:51,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51" (1/1) ... [2019-11-28 16:49:51,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51" (1/1) ... [2019-11-28 16:49:51,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51" (1/1) ... [2019-11-28 16:49:51,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51" (1/1) ... [2019-11-28 16:49:51,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51" (1/1) ... [2019-11-28 16:49:51,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51" (1/1) ... [2019-11-28 16:49:51,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51" (1/1) ... [2019-11-28 16:49:51,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:49:51,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:49:51,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:49:51,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:49:51,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51" (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 [2019-11-28 16:49:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:49:51,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 16:49:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-28 16:49:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:49:51,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:49:51,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:49:51,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:49:51,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-11-28 16:49:51,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:49:52,436 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:49:52,437 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-28 16:49:52,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:52 BoogieIcfgContainer [2019-11-28 16:49:52,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:49:52,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:49:52,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:49:52,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:49:52,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:49:51" (1/3) ... [2019-11-28 16:49:52,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784a172a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:52, skipping insertion in model container [2019-11-28 16:49:52,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:51" (2/3) ... [2019-11-28 16:49:52,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784a172a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:52, skipping insertion in model container [2019-11-28 16:49:52,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:52" (3/3) ... [2019-11-28 16:49:52,447 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2019-11-28 16:49:52,457 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:49:52,466 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:49:52,479 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:49:52,508 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:49:52,508 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:49:52,509 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:49:52,509 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:49:52,509 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:49:52,510 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:49:52,510 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:49:52,510 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:49:52,529 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-11-28 16:49:52,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 16:49:52,537 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:52,538 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:52,539 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:52,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:52,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2019-11-28 16:49:52,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:52,556 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704343430] [2019-11-28 16:49:52,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:49:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:49:52,679 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704343430] [2019-11-28 16:49:52,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:49:52,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:49:52,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574050892] [2019-11-28 16:49:52,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:49:52,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:49:52,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:49:52,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:49:52,704 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-11-28 16:49:52,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:49:52,729 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2019-11-28 16:49:52,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:49:52,731 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-28 16:49:52,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:49:52,744 INFO L225 Difference]: With dead ends: 118 [2019-11-28 16:49:52,744 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 16:49:52,748 INFO L630 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 [2019-11-28 16:49:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 16:49:52,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-11-28 16:49:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-28 16:49:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2019-11-28 16:49:52,793 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2019-11-28 16:49:52,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:49:52,794 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2019-11-28 16:49:52,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:49:52,795 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2019-11-28 16:49:52,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 16:49:52,796 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:52,796 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:52,796 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:52,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:52,797 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2019-11-28 16:49:52,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:52,798 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886422056] [2019-11-28 16:49:52,798 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:53,074 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:49:53,075 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:49:53,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:49:53 BoogieIcfgContainer [2019-11-28 16:49:53,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:49:53,135 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:49:53,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:49:53,136 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:49:53,137 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:52" (3/4) ... [2019-11-28 16:49:53,142 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:49:53,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:49:53,145 INFO L168 Benchmark]: Toolchain (without parser) took 2069.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -114.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:53,146 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:49:53,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 595.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:53,150 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:53,150 INFO L168 Benchmark]: Boogie Preprocessor took 46.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:49:53,152 INFO L168 Benchmark]: RCFGBuilder took 644.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:53,153 INFO L168 Benchmark]: TraceAbstraction took 695.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:53,153 INFO L168 Benchmark]: Witness Printer took 7.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:49:53,170 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 595.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.4 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -188.5 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 75.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.11 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 644.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 695.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * Witness Printer took 7.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={3:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L164] __int32_t hx; VAL [one_fmod=1, Zero_fmod={3:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={3:0}] [L183] COND TRUE isfinite_double(x) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={3:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={3:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={3:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={3:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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, 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 0.1.25-f470102 [2019-11-28 16:49:55,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:49:55,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:49:55,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:49:55,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:49:55,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:49:55,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:49:55,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:49:55,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:49:55,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:49:55,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:49:55,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:49:55,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:49:55,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:49:55,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:49:55,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:49:55,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:49:55,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:49:55,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:49:55,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:49:55,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:49:55,274 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:49:55,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:49:55,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:49:55,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:49:55,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:49:55,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:49:55,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:49:55,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:49:55,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:49:55,283 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:49:55,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:49:55,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:49:55,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:49:55,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:49:55,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:49:55,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:49:55,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:49:55,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:49:55,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:49:55,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:49:55,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:49:55,305 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:49:55,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:49:55,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:49:55,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:49:55,307 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:49:55,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:49:55,308 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:49:55,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:49:55,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:49:55,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:49:55,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:49:55,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:49:55,309 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:49:55,310 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:49:55,310 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:49:55,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:49:55,310 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:49:55,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:49:55,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:49:55,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:49:55,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:49:55,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:49:55,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:49:55,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:49:55,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:49:55,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:49:55,313 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:49:55,314 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:49:55,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:49:55,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:49:55,315 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:49:55,315 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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(__VERIFIER_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 -> 9e3ed9850bae7d066050d32134f925a24fb3772d [2019-11-28 16:49:55,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:49:55,627 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:49:55,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:49:55,634 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:49:55,635 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:49:55,636 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-11-28 16:49:55,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34f4a1ad/12c6cffc4a6b48a49cd63a754e802446/FLAGe81355593 [2019-11-28 16:49:56,194 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:49:56,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-11-28 16:49:56,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34f4a1ad/12c6cffc4a6b48a49cd63a754e802446/FLAGe81355593 [2019-11-28 16:49:56,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34f4a1ad/12c6cffc4a6b48a49cd63a754e802446 [2019-11-28 16:49:56,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:49:56,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:49:56,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:56,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:49:56,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:49:56,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:56" (1/1) ... [2019-11-28 16:49:56,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1dbb8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:56, skipping insertion in model container [2019-11-28 16:49:56,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:56" (1/1) ... [2019-11-28 16:49:56,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:49:56,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:49:56,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:56,918 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:49:56,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:57,022 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:49:57,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57 WrapperNode [2019-11-28 16:49:57,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:57,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:57,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:49:57,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:49:57,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57" (1/1) ... [2019-11-28 16:49:57,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57" (1/1) ... [2019-11-28 16:49:57,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:57,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:49:57,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:49:57,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:49:57,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57" (1/1) ... [2019-11-28 16:49:57,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57" (1/1) ... [2019-11-28 16:49:57,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57" (1/1) ... [2019-11-28 16:49:57,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57" (1/1) ... [2019-11-28 16:49:57,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57" (1/1) ... [2019-11-28 16:49:57,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57" (1/1) ... [2019-11-28 16:49:57,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57" (1/1) ... [2019-11-28 16:49:57,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:49:57,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:49:57,166 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:49:57,166 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:49:57,167 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57" (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 [2019-11-28 16:49:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-28 16:49:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-28 16:49:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:49:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-11-28 16:49:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:49:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:49:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:49:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-28 16:49:57,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:50:01,067 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:50:01,068 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-28 16:50:01,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:01 BoogieIcfgContainer [2019-11-28 16:50:01,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:50:01,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:50:01,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:50:01,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:50:01,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:49:56" (1/3) ... [2019-11-28 16:50:01,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d87c9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:01, skipping insertion in model container [2019-11-28 16:50:01,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57" (2/3) ... [2019-11-28 16:50:01,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d87c9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:01, skipping insertion in model container [2019-11-28 16:50:01,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:01" (3/3) ... [2019-11-28 16:50:01,079 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2019-11-28 16:50:01,090 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:50:01,098 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:50:01,112 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:50:01,146 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:50:01,146 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:50:01,147 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:50:01,147 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:50:01,147 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:50:01,148 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:50:01,148 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:50:01,148 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:50:01,166 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-11-28 16:50:01,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 16:50:01,174 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:01,175 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:01,175 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:01,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:01,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2019-11-28 16:50:01,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:01,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661280088] [2019-11-28 16:50:01,192 INFO L94 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 [2019-11-28 16:50:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:02,278 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:50:02,282 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:02,295 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:02,302 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661280088] [2019-11-28 16:50:02,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:02,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:50:02,304 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272195180] [2019-11-28 16:50:02,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:50:02,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:02,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:50:02,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:50:02,326 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-11-28 16:50:02,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:02,350 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2019-11-28 16:50:02,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:50:02,352 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-11-28 16:50:02,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:02,364 INFO L225 Difference]: With dead ends: 118 [2019-11-28 16:50:02,365 INFO L226 Difference]: Without dead ends: 56 [2019-11-28 16:50:02,369 INFO L630 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 [2019-11-28 16:50:02,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-11-28 16:50:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-11-28 16:50:02,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-11-28 16:50:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2019-11-28 16:50:02,406 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2019-11-28 16:50:02,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:02,407 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2019-11-28 16:50:02,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:50:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2019-11-28 16:50:02,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 16:50:02,408 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:02,408 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:02,623 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:50:02,624 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:02,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:02,625 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2019-11-28 16:50:02,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:02,628 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899292167] [2019-11-28 16:50:02,628 INFO L94 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 [2019-11-28 16:50:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:50:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:50:05,413 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-28 16:50:05,414 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:50:05,616 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:50:05,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:50:05 BoogieIcfgContainer [2019-11-28 16:50:05,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:50:05,658 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:50:05,658 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:50:05,658 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:50:05,659 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:01" (3/4) ... [2019-11-28 16:50:05,661 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 16:50:05,720 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:50:05,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:50:05,723 INFO L168 Benchmark]: Toolchain (without parser) took 9203.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 956.3 MB in the beginning and 1.0 GB in the end (delta: -58.8 MB). Peak memory consumption was 71.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:05,723 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:05,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -164.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:05,725 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:05,726 INFO L168 Benchmark]: Boogie Preprocessor took 51.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:05,726 INFO L168 Benchmark]: RCFGBuilder took 3904.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:05,727 INFO L168 Benchmark]: TraceAbstraction took 4586.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:05,728 INFO L168 Benchmark]: Witness Printer took 62.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:05,732 INFO L335 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 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 503.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -164.0 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 88.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3904.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4586.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 11.5 GB. * Witness Printer took 62.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 189]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L164] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L183] COND TRUE isfinite_double(x) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L189] __VERIFIER_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 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, 2.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...