./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -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_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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b885e206564f4e9bb7a421e0f9e82e87cbb5e4d9 ............................................................................................................................................................................................................................................................................................................................................................... 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 -ea -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_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(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b885e206564f4e9bb7a421e0f9e82e87cbb5e4d9 ....................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-8bd4bc6 [2020-07-28 17:41:43,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:41:43,740 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:41:43,757 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:41:43,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:41:43,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:41:43,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:41:43,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:41:43,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:41:43,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:41:43,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:41:43,779 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:41:43,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:41:43,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:41:43,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:41:43,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:41:43,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:41:43,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:41:43,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:41:43,798 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:41:43,800 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:41:43,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:41:43,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:41:43,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:41:43,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:41:43,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:41:43,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:41:43,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:41:43,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:41:43,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:41:43,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:41:43,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:41:43,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:41:43,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:41:43,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:41:43,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:41:43,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:41:43,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:41:43,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:41:43,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:41:43,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:41:43,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 17:41:43,842 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:41:43,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:41:43,844 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:41:43,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:41:43,844 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:41:43,845 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:41:43,845 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:41:43,845 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 17:41:43,845 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:41:43,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:41:43,846 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:41:43,846 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:41:43,847 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:41:43,847 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:41:43,847 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:41:43,847 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:41:43,848 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:41:43,848 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:41:43,848 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:41:43,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:41:43,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:41:43,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:41:43,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:41:43,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:41:43,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:41:43,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 17:41:43,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 17:41:43,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:41:43,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:41:43,851 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 -> b885e206564f4e9bb7a421e0f9e82e87cbb5e4d9 [2020-07-28 17:41:44,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:41:44,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:41:44,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:41:44,224 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:41:44,225 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:41:44,226 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-07-28 17:41:44,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae9573dfe/d88556c9fae64422b94842bc5c7133fa/FLAG47293f31f [2020-07-28 17:41:44,792 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:41:44,793 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-07-28 17:41:44,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae9573dfe/d88556c9fae64422b94842bc5c7133fa/FLAG47293f31f [2020-07-28 17:41:45,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae9573dfe/d88556c9fae64422b94842bc5c7133fa [2020-07-28 17:41:45,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:41:45,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:41:45,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:41:45,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:41:45,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:41:45,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:41:45" (1/1) ... [2020-07-28 17:41:45,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56902eed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45, skipping insertion in model container [2020-07-28 17:41:45,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:41:45" (1/1) ... [2020-07-28 17:41:45,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:41:45,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:41:45,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:41:45,391 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:41:45,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:41:45,517 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:41:45,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45 WrapperNode [2020-07-28 17:41:45,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:41:45,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:41:45,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:41:45,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:41:45,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45" (1/1) ... [2020-07-28 17:41:45,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45" (1/1) ... [2020-07-28 17:41:45,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:41:45,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:41:45,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:41:45,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:41:45,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45" (1/1) ... [2020-07-28 17:41:45,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45" (1/1) ... [2020-07-28 17:41:45,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45" (1/1) ... [2020-07-28 17:41:45,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45" (1/1) ... [2020-07-28 17:41:45,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45" (1/1) ... [2020-07-28 17:41:45,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45" (1/1) ... [2020-07-28 17:41:45,613 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45" (1/1) ... [2020-07-28 17:41:45,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:41:45,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:41:45,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:41:45,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:41:45,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45" (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 [2020-07-28 17:41:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:41:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-28 17:41:45,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-28 17:41:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-28 17:41:45,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:41:45,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:41:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-28 17:41:45,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:41:46,143 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:41:46,144 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-28 17:41:46,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:41:46 BoogieIcfgContainer [2020-07-28 17:41:46,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:41:46,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:41:46,149 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:41:46,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:41:46,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:41:45" (1/3) ... [2020-07-28 17:41:46,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544c9463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:41:46, skipping insertion in model container [2020-07-28 17:41:46,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:45" (2/3) ... [2020-07-28 17:41:46,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544c9463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:41:46, skipping insertion in model container [2020-07-28 17:41:46,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:41:46" (3/3) ... [2020-07-28 17:41:46,157 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-07-28 17:41:46,168 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:41:46,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:41:46,191 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:41:46,211 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:41:46,212 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:41:46,212 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:41:46,212 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:41:46,212 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:41:46,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:41:46,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:41:46,213 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:41:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-28 17:41:46,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-28 17:41:46,232 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:41:46,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:41:46,233 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:41:46,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:41:46,239 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-07-28 17:41:46,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:41:46,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894462155] [2020-07-28 17:41:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:41:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:41:46,386 INFO L280 TraceCheckUtils]: 0: Hoare triple {21#true} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {21#true} is VALID [2020-07-28 17:41:46,387 INFO L280 TraceCheckUtils]: 1: Hoare triple {21#true} havoc main_#res;havoc main_#t~ret10, main_#t~ret11, main_~x~0, main_~res~0;main_~x~0 := ~someBinaryArithmeticDOUBLEoperation(1.0, 0.0);fabs_double_#in~x := main_~x~0;havoc fabs_double_#res;havoc fabs_double_#t~mem6, fabs_double_#t~union7, fabs_double_~#gh_u~1.base, fabs_double_~#gh_u~1.offset, fabs_double_#t~mem8, fabs_double_#t~union9.lsw, fabs_double_#t~union9.msw, fabs_double_~#sh_u~0.base, fabs_double_~#sh_u~0.offset, fabs_double_~x, fabs_double_~high~0;fabs_double_~x := fabs_double_#in~x;havoc fabs_double_~high~0; {21#true} is VALID [2020-07-28 17:41:46,390 INFO L280 TraceCheckUtils]: 2: Hoare triple {21#true} assume !true; {22#false} is VALID [2020-07-28 17:41:46,391 INFO L280 TraceCheckUtils]: 3: Hoare triple {22#false} assume !true; {22#false} is VALID [2020-07-28 17:41:46,391 INFO L280 TraceCheckUtils]: 4: Hoare triple {22#false} fabs_double_#res := fabs_double_~x; {22#false} is VALID [2020-07-28 17:41:46,392 INFO L280 TraceCheckUtils]: 5: Hoare triple {22#false} main_#t~ret10 := fabs_double_#res;main_~res~0 := main_#t~ret10;havoc main_#t~ret10;isinf_double_#in~x := main_~res~0;havoc isinf_double_#res;havoc isinf_double_#t~mem2, isinf_double_#t~union3, isinf_double_#t~mem4, isinf_double_#t~union5, isinf_double_~#ew_u~0.base, isinf_double_~#ew_u~0.offset, isinf_double_~x, isinf_double_~hx~0, isinf_double_~lx~0;isinf_double_~x := isinf_double_#in~x;havoc isinf_double_~hx~0;havoc isinf_double_~lx~0; {22#false} is VALID [2020-07-28 17:41:46,392 INFO L280 TraceCheckUtils]: 6: Hoare triple {22#false} assume !true; {22#false} is VALID [2020-07-28 17:41:46,392 INFO L280 TraceCheckUtils]: 7: Hoare triple {22#false} isinf_double_~hx~0 := ~bitwiseAnd(isinf_double_~hx~0, 2147483647);isinf_double_~hx~0 := (if ~bitwiseOr(isinf_double_~hx~0, ~bitwiseOr(isinf_double_~lx~0, -isinf_double_~lx~0) / 2147483648) % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseOr(isinf_double_~hx~0, ~bitwiseOr(isinf_double_~lx~0, -isinf_double_~lx~0) / 2147483648) % 4294967296 % 4294967296 else ~bitwiseOr(isinf_double_~hx~0, ~bitwiseOr(isinf_double_~lx~0, -isinf_double_~lx~0) / 2147483648) % 4294967296 % 4294967296 - 4294967296);isinf_double_~hx~0 := 2146435072 - isinf_double_~hx~0;isinf_double_#res := 1 - (if ~bitwiseOr(isinf_double_~hx~0, -isinf_double_~hx~0) / 2147483648 % 4294967296 % 4294967296 <= 2147483647 then ~bitwiseOr(isinf_double_~hx~0, -isinf_double_~hx~0) / 2147483648 % 4294967296 % 4294967296 else ~bitwiseOr(isinf_double_~hx~0, -isinf_double_~hx~0) / 2147483648 % 4294967296 % 4294967296 - 4294967296); {22#false} is VALID [2020-07-28 17:41:46,393 INFO L280 TraceCheckUtils]: 8: Hoare triple {22#false} main_#t~ret11 := isinf_double_#res;assume -2147483648 <= main_#t~ret11 && main_#t~ret11 <= 2147483647; {22#false} is VALID [2020-07-28 17:41:46,393 INFO L280 TraceCheckUtils]: 9: Hoare triple {22#false} assume 0 == main_#t~ret11;havoc main_#t~ret11; {22#false} is VALID [2020-07-28 17:41:46,393 INFO L280 TraceCheckUtils]: 10: Hoare triple {22#false} assume !false; {22#false} is VALID [2020-07-28 17:41:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:41:46,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894462155] [2020-07-28 17:41:46,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:41:46,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-28 17:41:46,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128093036] [2020-07-28 17:41:46,407 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-28 17:41:46,409 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:41:46,413 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:41:46,439 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:41:46,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:41:46,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 17:41:46,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:41:46,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:41:46,452 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-07-28 17:41:46,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:41:46,538 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2020-07-28 17:41:46,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:41:46,538 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-28 17:41:46,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:41:46,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:41:46,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2020-07-28 17:41:46,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:41:46,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2020-07-28 17:41:46,565 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 46 transitions. [2020-07-28 17:41:46,664 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:41:46,675 INFO L225 Difference]: With dead ends: 34 [2020-07-28 17:41:46,676 INFO L226 Difference]: Without dead ends: 15 [2020-07-28 17:41:46,680 INFO L675 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 [2020-07-28 17:41:46,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-28 17:41:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-28 17:41:46,714 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:41:46,715 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand 15 states. [2020-07-28 17:41:46,715 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 15 states. [2020-07-28 17:41:46,716 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 15 states. [2020-07-28 17:41:46,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:41:46,718 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-07-28 17:41:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-07-28 17:41:46,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:41:46,720 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:41:46,720 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 15 states. [2020-07-28 17:41:46,720 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 15 states. [2020-07-28 17:41:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:41:46,723 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-07-28 17:41:46,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-07-28 17:41:46,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:41:46,724 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:41:46,724 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:41:46,724 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:41:46,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-28 17:41:46,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-07-28 17:41:46,728 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-07-28 17:41:46,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:41:46,729 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-07-28 17:41:46,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:41:46,730 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-07-28 17:41:46,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-28 17:41:46,730 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:41:46,731 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:41:46,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 17:41:46,732 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:41:46,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:41:46,732 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-07-28 17:41:46,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 17:41:46,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364333201] [2020-07-28 17:41:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 17:41:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:41:46,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:41:47,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:41:47,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:41:47,047 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-28 17:41:47,048 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:41:47,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-28 17:41:47,077 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:41:47,077 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:41:47,077 WARN L170 areAnnotationChecker]: L46-2 has no Hoare annotation [2020-07-28 17:41:47,077 WARN L170 areAnnotationChecker]: L46-2 has no Hoare annotation [2020-07-28 17:41:47,078 WARN L170 areAnnotationChecker]: L46-1 has no Hoare annotation [2020-07-28 17:41:47,078 WARN L170 areAnnotationChecker]: L46-1 has no Hoare annotation [2020-07-28 17:41:47,078 WARN L170 areAnnotationChecker]: L51-1 has no Hoare annotation [2020-07-28 17:41:47,078 WARN L170 areAnnotationChecker]: L51-1 has no Hoare annotation [2020-07-28 17:41:47,079 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2020-07-28 17:41:47,079 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2020-07-28 17:41:47,079 WARN L170 areAnnotationChecker]: L51-2 has no Hoare annotation [2020-07-28 17:41:47,079 WARN L170 areAnnotationChecker]: L57 has no Hoare annotation [2020-07-28 17:41:47,080 WARN L170 areAnnotationChecker]: L32-2 has no Hoare annotation [2020-07-28 17:41:47,080 WARN L170 areAnnotationChecker]: L32-2 has no Hoare annotation [2020-07-28 17:41:47,080 WARN L170 areAnnotationChecker]: L32-1 has no Hoare annotation [2020-07-28 17:41:47,080 WARN L170 areAnnotationChecker]: L32-1 has no Hoare annotation [2020-07-28 17:41:47,080 WARN L170 areAnnotationChecker]: L32-3 has no Hoare annotation [2020-07-28 17:41:47,081 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-28 17:41:47,081 WARN L170 areAnnotationChecker]: L72 has no Hoare annotation [2020-07-28 17:41:47,081 WARN L170 areAnnotationChecker]: L72 has no Hoare annotation [2020-07-28 17:41:47,081 WARN L170 areAnnotationChecker]: L73 has no Hoare annotation [2020-07-28 17:41:47,082 WARN L170 areAnnotationChecker]: L73 has no Hoare annotation [2020-07-28 17:41:47,082 WARN L170 areAnnotationChecker]: L77 has no Hoare annotation [2020-07-28 17:41:47,082 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:41:47,082 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:41:47,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:41:47 BoogieIcfgContainer [2020-07-28 17:41:47,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:41:47,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:41:47,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:41:47,087 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:41:47,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:41:46" (3/4) ... [2020-07-28 17:41:47,093 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-07-28 17:41:47,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:41:47,097 INFO L168 Benchmark]: Toolchain (without parser) took 1940.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 961.6 MB in the beginning and 1.0 GB in the end (delta: -67.5 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:41:47,098 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:41:47,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:41:47,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.81 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. [2020-07-28 17:41:47,101 INFO L168 Benchmark]: Boogie Preprocessor took 37.15 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. [2020-07-28 17:41:47,102 INFO L168 Benchmark]: RCFGBuilder took 531.38 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: 34.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:41:47,102 INFO L168 Benchmark]: TraceAbstraction took 936.59 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: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 11.5 GB. [2020-07-28 17:41:47,103 INFO L168 Benchmark]: Witness Printer took 7.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:41:47,107 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 358.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 961.6 MB in the beginning and 1.1 GB in the end (delta: -155.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.81 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. * Boogie Preprocessor took 37.15 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 531.38 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: 34.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 936.59 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: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 11.5 GB. * Witness Printer took 7.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 73]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 68, overapproximation of bitwiseAnd at line 38. Possible FailurePath: [L68] double x = 1.0 / 0.0; [L45] __uint32_t high; [L47] ieee_double_shape_type gh_u; [L48] gh_u.value = (x) [L49] EXPR gh_u.parts.msw [L49] (high) = gh_u.parts.msw [L52] ieee_double_shape_type sh_u; [L53] sh_u.value = (x) [L54] sh_u.parts.msw = (high & 0x7fffffff) [L55] EXPR sh_u.value [L55] (x) = sh_u.value [L57] return x; [L69] double res = fabs_double(x); [L31] __int32_t hx, lx; [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (x) [L35] EXPR ew_u.parts.msw [L35] (hx) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (lx) = ew_u.parts.lsw [L38] hx &= 0x7fffffff [L39] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L40] hx = 0x7ff00000 - hx [L41] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L72] COND TRUE !isinf_double(res) [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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=18occurred 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 0.1.25-8bd4bc6 [2020-07-28 17:41:49,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 17:41:49,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 17:41:49,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 17:41:49,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 17:41:49,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 17:41:49,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 17:41:49,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 17:41:49,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 17:41:49,103 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 17:41:49,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 17:41:49,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 17:41:49,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 17:41:49,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 17:41:49,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 17:41:49,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 17:41:49,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 17:41:49,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 17:41:49,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 17:41:49,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 17:41:49,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 17:41:49,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 17:41:49,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 17:41:49,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 17:41:49,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 17:41:49,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 17:41:49,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 17:41:49,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 17:41:49,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 17:41:49,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 17:41:49,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 17:41:49,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 17:41:49,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 17:41:49,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 17:41:49,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 17:41:49,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 17:41:49,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 17:41:49,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 17:41:49,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 17:41:49,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 17:41:49,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 17:41:49,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-07-28 17:41:49,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 17:41:49,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 17:41:49,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 17:41:49,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 17:41:49,186 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 17:41:49,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 17:41:49,187 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 17:41:49,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 17:41:49,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 17:41:49,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 17:41:49,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 17:41:49,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 17:41:49,190 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-07-28 17:41:49,190 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-07-28 17:41:49,190 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 17:41:49,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 17:41:49,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 17:41:49,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 17:41:49,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 17:41:49,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 17:41:49,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 17:41:49,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 17:41:49,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 17:41:49,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 17:41:49,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 17:41:49,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 17:41:49,196 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-07-28 17:41:49,197 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-07-28 17:41:49,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 17:41:49,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 17:41:49,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-28 17:41:49,198 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 -> b885e206564f4e9bb7a421e0f9e82e87cbb5e4d9 [2020-07-28 17:41:49,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 17:41:49,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 17:41:49,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 17:41:49,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 17:41:49,526 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 17:41:49,526 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-07-28 17:41:49,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85b591de1/e5eccc2968164f2aa52e668acb511b6d/FLAGfd5a356b9 [2020-07-28 17:41:50,024 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 17:41:50,025 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1012a.c [2020-07-28 17:41:50,031 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85b591de1/e5eccc2968164f2aa52e668acb511b6d/FLAGfd5a356b9 [2020-07-28 17:41:50,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85b591de1/e5eccc2968164f2aa52e668acb511b6d [2020-07-28 17:41:50,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 17:41:50,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 17:41:50,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 17:41:50,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 17:41:50,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 17:41:50,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:41:50" (1/1) ... [2020-07-28 17:41:50,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6c574a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50, skipping insertion in model container [2020-07-28 17:41:50,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 05:41:50" (1/1) ... [2020-07-28 17:41:50,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 17:41:50,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 17:41:50,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:41:50,627 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 17:41:50,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 17:41:50,701 INFO L208 MainTranslator]: Completed translation [2020-07-28 17:41:50,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50 WrapperNode [2020-07-28 17:41:50,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 17:41:50,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 17:41:50,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 17:41:50,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 17:41:50,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50" (1/1) ... [2020-07-28 17:41:50,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50" (1/1) ... [2020-07-28 17:41:50,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 17:41:50,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 17:41:50,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 17:41:50,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 17:41:50,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50" (1/1) ... [2020-07-28 17:41:50,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50" (1/1) ... [2020-07-28 17:41:50,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50" (1/1) ... [2020-07-28 17:41:50,890 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50" (1/1) ... [2020-07-28 17:41:50,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50" (1/1) ... [2020-07-28 17:41:50,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50" (1/1) ... [2020-07-28 17:41:50,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50" (1/1) ... [2020-07-28 17:41:50,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 17:41:50,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 17:41:50,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 17:41:50,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 17:41:50,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50" (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 [2020-07-28 17:41:51,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-07-28 17:41:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-07-28 17:41:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-28 17:41:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-07-28 17:41:51,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 17:41:51,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 17:41:51,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-07-28 17:41:51,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-28 17:41:51,561 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 17:41:51,561 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-28 17:41:51,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:41:51 BoogieIcfgContainer [2020-07-28 17:41:51,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 17:41:51,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 17:41:51,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 17:41:51,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 17:41:51,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 05:41:50" (1/3) ... [2020-07-28 17:41:51,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14af465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:41:51, skipping insertion in model container [2020-07-28 17:41:51,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 05:41:50" (2/3) ... [2020-07-28 17:41:51,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14af465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 05:41:51, skipping insertion in model container [2020-07-28 17:41:51,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:41:51" (3/3) ... [2020-07-28 17:41:51,575 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-07-28 17:41:51,585 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 17:41:51,593 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-28 17:41:51,607 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-28 17:41:51,631 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 17:41:51,631 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 17:41:51,631 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 17:41:51,631 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 17:41:51,631 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 17:41:51,632 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 17:41:51,632 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 17:41:51,632 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 17:41:51,646 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-28 17:41:51,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-28 17:41:51,652 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:41:51,653 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:41:51,653 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:41:51,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:41:51,658 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-07-28 17:41:51,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:41:51,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227014874] [2020-07-28 17:41:51,671 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 [2020-07-28 17:41:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:41:51,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-28 17:41:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 17:41:51,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-28 17:41:51,854 INFO L280 TraceCheckUtils]: 0: Hoare triple {21#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {21#true} is VALID [2020-07-28 17:41:51,855 INFO L280 TraceCheckUtils]: 1: Hoare triple {21#true} havoc main_#res;havoc main_#t~ret10, main_#t~ret11, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~DOUBLE(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0), ~Pluszero~DOUBLE());fabs_double_#in~x := main_~x~0;havoc fabs_double_#res;havoc fabs_double_#t~mem6, fabs_double_#t~union7, fabs_double_~#gh_u~1.base, fabs_double_~#gh_u~1.offset, fabs_double_#t~mem8, fabs_double_#t~union9.lsw, fabs_double_#t~union9.msw, fabs_double_~#sh_u~0.base, fabs_double_~#sh_u~0.offset, fabs_double_~x, fabs_double_~high~0;fabs_double_~x := fabs_double_#in~x;havoc fabs_double_~high~0; {21#true} is VALID [2020-07-28 17:41:51,856 INFO L280 TraceCheckUtils]: 2: Hoare triple {21#true} assume !true; {21#true} is VALID [2020-07-28 17:41:51,856 INFO L280 TraceCheckUtils]: 3: Hoare triple {21#true} assume !true; {21#true} is VALID [2020-07-28 17:41:51,857 INFO L280 TraceCheckUtils]: 4: Hoare triple {21#true} fabs_double_#res := fabs_double_~x; {21#true} is VALID [2020-07-28 17:41:51,857 INFO L280 TraceCheckUtils]: 5: Hoare triple {21#true} main_#t~ret10 := fabs_double_#res;main_~res~0 := main_#t~ret10;havoc main_#t~ret10;isinf_double_#in~x := main_~res~0;havoc isinf_double_#res;havoc isinf_double_#t~mem2, isinf_double_#t~union3, isinf_double_#t~mem4, isinf_double_#t~union5, isinf_double_~#ew_u~0.base, isinf_double_~#ew_u~0.offset, isinf_double_~x, isinf_double_~hx~0, isinf_double_~lx~0;isinf_double_~x := isinf_double_#in~x;havoc isinf_double_~hx~0;havoc isinf_double_~lx~0; {21#true} is VALID [2020-07-28 17:41:51,858 INFO L280 TraceCheckUtils]: 6: Hoare triple {21#true} assume !true; {22#false} is VALID [2020-07-28 17:41:51,859 INFO L280 TraceCheckUtils]: 7: Hoare triple {22#false} isinf_double_~hx~0 := ~bvand32(2147483647bv32, isinf_double_~hx~0);isinf_double_~hx~0 := ~bvor32(isinf_double_~hx~0, ~bvlshr32(~bvor32(isinf_double_~lx~0, ~bvneg32(isinf_double_~lx~0)), 31bv32));isinf_double_~hx~0 := ~bvsub32(2146435072bv32, isinf_double_~hx~0);isinf_double_#res := ~bvsub32(1bv32, ~bvlshr32(~bvor32(isinf_double_~hx~0, ~bvneg32(isinf_double_~hx~0)), 31bv32)); {22#false} is VALID [2020-07-28 17:41:51,859 INFO L280 TraceCheckUtils]: 8: Hoare triple {22#false} main_#t~ret11 := isinf_double_#res; {22#false} is VALID [2020-07-28 17:41:51,860 INFO L280 TraceCheckUtils]: 9: Hoare triple {22#false} assume 0bv32 == main_#t~ret11;havoc main_#t~ret11; {22#false} is VALID [2020-07-28 17:41:51,860 INFO L280 TraceCheckUtils]: 10: Hoare triple {22#false} assume !false; {22#false} is VALID [2020-07-28 17:41:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:41:51,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-28 17:41:51,884 INFO L280 TraceCheckUtils]: 10: Hoare triple {22#false} assume !false; {22#false} is VALID [2020-07-28 17:41:51,884 INFO L280 TraceCheckUtils]: 9: Hoare triple {22#false} assume 0bv32 == main_#t~ret11;havoc main_#t~ret11; {22#false} is VALID [2020-07-28 17:41:51,884 INFO L280 TraceCheckUtils]: 8: Hoare triple {22#false} main_#t~ret11 := isinf_double_#res; {22#false} is VALID [2020-07-28 17:41:51,885 INFO L280 TraceCheckUtils]: 7: Hoare triple {22#false} isinf_double_~hx~0 := ~bvand32(2147483647bv32, isinf_double_~hx~0);isinf_double_~hx~0 := ~bvor32(isinf_double_~hx~0, ~bvlshr32(~bvor32(isinf_double_~lx~0, ~bvneg32(isinf_double_~lx~0)), 31bv32));isinf_double_~hx~0 := ~bvsub32(2146435072bv32, isinf_double_~hx~0);isinf_double_#res := ~bvsub32(1bv32, ~bvlshr32(~bvor32(isinf_double_~hx~0, ~bvneg32(isinf_double_~hx~0)), 31bv32)); {22#false} is VALID [2020-07-28 17:41:51,885 INFO L280 TraceCheckUtils]: 6: Hoare triple {21#true} assume !true; {22#false} is VALID [2020-07-28 17:41:51,886 INFO L280 TraceCheckUtils]: 5: Hoare triple {21#true} main_#t~ret10 := fabs_double_#res;main_~res~0 := main_#t~ret10;havoc main_#t~ret10;isinf_double_#in~x := main_~res~0;havoc isinf_double_#res;havoc isinf_double_#t~mem2, isinf_double_#t~union3, isinf_double_#t~mem4, isinf_double_#t~union5, isinf_double_~#ew_u~0.base, isinf_double_~#ew_u~0.offset, isinf_double_~x, isinf_double_~hx~0, isinf_double_~lx~0;isinf_double_~x := isinf_double_#in~x;havoc isinf_double_~hx~0;havoc isinf_double_~lx~0; {21#true} is VALID [2020-07-28 17:41:51,886 INFO L280 TraceCheckUtils]: 4: Hoare triple {21#true} fabs_double_#res := fabs_double_~x; {21#true} is VALID [2020-07-28 17:41:51,886 INFO L280 TraceCheckUtils]: 3: Hoare triple {21#true} assume !true; {21#true} is VALID [2020-07-28 17:41:51,887 INFO L280 TraceCheckUtils]: 2: Hoare triple {21#true} assume !true; {21#true} is VALID [2020-07-28 17:41:51,887 INFO L280 TraceCheckUtils]: 1: Hoare triple {21#true} havoc main_#res;havoc main_#t~ret10, main_#t~ret11, main_~x~0, main_~res~0;main_~x~0 := ~fp.div~DOUBLE(currentRoundingMode, ~to_fp~DOUBLE(currentRoundingMode, 1.0), ~Pluszero~DOUBLE());fabs_double_#in~x := main_~x~0;havoc fabs_double_#res;havoc fabs_double_#t~mem6, fabs_double_#t~union7, fabs_double_~#gh_u~1.base, fabs_double_~#gh_u~1.offset, fabs_double_#t~mem8, fabs_double_#t~union9.lsw, fabs_double_#t~union9.msw, fabs_double_~#sh_u~0.base, fabs_double_~#sh_u~0.offset, fabs_double_~x, fabs_double_~high~0;fabs_double_~x := fabs_double_#in~x;havoc fabs_double_~high~0; {21#true} is VALID [2020-07-28 17:41:51,888 INFO L280 TraceCheckUtils]: 0: Hoare triple {21#true} #NULL.base, #NULL.offset := 0bv32, 0bv32;#valid := #valid[0bv32 := 0bv1];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven; {21#true} is VALID [2020-07-28 17:41:51,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 17:41:51,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227014874] [2020-07-28 17:41:51,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-07-28 17:41:51,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-07-28 17:41:51,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445852811] [2020-07-28 17:41:51,898 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-28 17:41:51,899 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 17:41:51,904 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-28 17:41:51,934 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:41:51,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-28 17:41:51,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-07-28 17:41:51,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-28 17:41:51,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-28 17:41:51,946 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-07-28 17:41:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:41:52,106 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2020-07-28 17:41:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-28 17:41:52,107 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-07-28 17:41:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 17:41:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:41:52,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2020-07-28 17:41:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-28 17:41:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 46 transitions. [2020-07-28 17:41:52,144 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 46 transitions. [2020-07-28 17:41:52,262 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 17:41:52,273 INFO L225 Difference]: With dead ends: 34 [2020-07-28 17:41:52,274 INFO L226 Difference]: Without dead ends: 15 [2020-07-28 17:41:52,278 INFO L675 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 [2020-07-28 17:41:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-28 17:41:52,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-28 17:41:52,314 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 17:41:52,315 INFO L82 GeneralOperation]: Start isEquivalent. First operand 15 states. Second operand 15 states. [2020-07-28 17:41:52,315 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 15 states. [2020-07-28 17:41:52,315 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 15 states. [2020-07-28 17:41:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:41:52,319 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-07-28 17:41:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-07-28 17:41:52,319 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:41:52,320 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:41:52,320 INFO L74 IsIncluded]: Start isIncluded. First operand 15 states. Second operand 15 states. [2020-07-28 17:41:52,320 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 15 states. [2020-07-28 17:41:52,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 17:41:52,322 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-07-28 17:41:52,323 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-07-28 17:41:52,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 17:41:52,323 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 17:41:52,324 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 17:41:52,324 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 17:41:52,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-28 17:41:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-07-28 17:41:52,328 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-07-28 17:41:52,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 17:41:52,328 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-07-28 17:41:52,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-28 17:41:52,329 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-07-28 17:41:52,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-28 17:41:52,329 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 17:41:52,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-28 17:41:52,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-07-28 17:41:52,554 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 17:41:52,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 17:41:52,555 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-07-28 17:41:52,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-07-28 17:41:52,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892528359] [2020-07-28 17:41:52,564 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 [2020-07-28 17:41:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:41:52,708 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:41:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-28 17:41:52,820 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-28 17:41:52,868 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-07-28 17:41:52,868 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-28 17:41:53,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-07-28 17:41:53,098 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 17:41:53,098 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-28 17:41:53,099 WARN L170 areAnnotationChecker]: L46-2 has no Hoare annotation [2020-07-28 17:41:53,099 WARN L170 areAnnotationChecker]: L46-2 has no Hoare annotation [2020-07-28 17:41:53,099 WARN L170 areAnnotationChecker]: L46-1 has no Hoare annotation [2020-07-28 17:41:53,099 WARN L170 areAnnotationChecker]: L46-1 has no Hoare annotation [2020-07-28 17:41:53,099 WARN L170 areAnnotationChecker]: L51-1 has no Hoare annotation [2020-07-28 17:41:53,099 WARN L170 areAnnotationChecker]: L51-1 has no Hoare annotation [2020-07-28 17:41:53,099 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2020-07-28 17:41:53,099 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2020-07-28 17:41:53,100 WARN L170 areAnnotationChecker]: L51-2 has no Hoare annotation [2020-07-28 17:41:53,100 WARN L170 areAnnotationChecker]: L57 has no Hoare annotation [2020-07-28 17:41:53,100 WARN L170 areAnnotationChecker]: L32-2 has no Hoare annotation [2020-07-28 17:41:53,100 WARN L170 areAnnotationChecker]: L32-2 has no Hoare annotation [2020-07-28 17:41:53,100 WARN L170 areAnnotationChecker]: L32-1 has no Hoare annotation [2020-07-28 17:41:53,100 WARN L170 areAnnotationChecker]: L32-1 has no Hoare annotation [2020-07-28 17:41:53,100 WARN L170 areAnnotationChecker]: L32-3 has no Hoare annotation [2020-07-28 17:41:53,101 WARN L170 areAnnotationChecker]: L41 has no Hoare annotation [2020-07-28 17:41:53,101 WARN L170 areAnnotationChecker]: L72 has no Hoare annotation [2020-07-28 17:41:53,101 WARN L170 areAnnotationChecker]: L72 has no Hoare annotation [2020-07-28 17:41:53,101 WARN L170 areAnnotationChecker]: L73 has no Hoare annotation [2020-07-28 17:41:53,101 WARN L170 areAnnotationChecker]: L73 has no Hoare annotation [2020-07-28 17:41:53,101 WARN L170 areAnnotationChecker]: L77 has no Hoare annotation [2020-07-28 17:41:53,102 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 17:41:53,102 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 17:41:53,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 05:41:53 BoogieIcfgContainer [2020-07-28 17:41:53,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 17:41:53,105 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 17:41:53,105 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 17:41:53,105 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 17:41:53,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 05:41:51" (3/4) ... [2020-07-28 17:41:53,109 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-07-28 17:41:53,165 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 17:41:53,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 17:41:53,169 INFO L168 Benchmark]: Toolchain (without parser) took 2790.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 956.2 MB in the beginning and 1.0 GB in the end (delta: -74.5 MB). Peak memory consumption was 74.4 MB. Max. memory is 11.5 GB. [2020-07-28 17:41:53,170 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 17:41:53,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.26 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 940.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:41:53,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 161.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 940.1 MB in the beginning and 1.1 GB in the end (delta: -198.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2020-07-28 17:41:53,171 INFO L168 Benchmark]: Boogie Preprocessor took 84.66 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. [2020-07-28 17:41:53,172 INFO L168 Benchmark]: RCFGBuilder took 615.58 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: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. [2020-07-28 17:41:53,173 INFO L168 Benchmark]: TraceAbstraction took 1537.67 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: 70.0 MB). Peak memory consumption was 70.0 MB. Max. memory is 11.5 GB. [2020-07-28 17:41:53,173 INFO L168 Benchmark]: Witness Printer took 60.92 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. [2020-07-28 17:41:53,177 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 321.26 ms. Allocated memory is still 1.0 GB. Free memory was 956.2 MB in the beginning and 940.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 161.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 940.1 MB in the beginning and 1.1 GB in the end (delta: -198.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 84.66 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 615.58 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: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1537.67 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: 70.0 MB). Peak memory consumption was 70.0 MB. Max. memory is 11.5 GB. * Witness Printer took 60.92 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: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L68] double x = 1.0 / 0.0; [L45] __uint32_t high; [L47] ieee_double_shape_type gh_u; [L48] gh_u.value = (x) [L49] EXPR gh_u.parts.msw [L49] (high) = gh_u.parts.msw [L52] ieee_double_shape_type sh_u; [L53] sh_u.value = (x) [L54] sh_u.parts.msw = (high & 0x7fffffff) [L55] EXPR sh_u.value [L55] (x) = sh_u.value [L57] return x; [L69] double res = fabs_double(x); [L31] __int32_t hx, lx; [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (x) [L35] EXPR ew_u.parts.msw [L35] (hx) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (lx) = ew_u.parts.lsw [L38] hx &= 0x7fffffff [L39] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L40] hx = 0x7ff00000 - hx [L41] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L72] COND TRUE !isinf_double(res) [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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=18occurred 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, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 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...