./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c1f4b5c4 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1072a.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 6677b5df0de82d6f15e79744b3d0d69c2e6d1112 .............................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1072a.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 6677b5df0de82d6f15e79744b3d0d69c2e6d1112 ............................................................................................................................................................................................................................................................................................................ 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-c1f4b5c [2019-12-08 15:54:27,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:27,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:27,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:27,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:27,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:27,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:27,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:27,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:27,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:27,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:27,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:27,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:27,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:27,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:27,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:27,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:27,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:27,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:27,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:27,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:27,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:27,864 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:27,865 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:27,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:27,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:27,870 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:27,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:27,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:27,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:27,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:27,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:27,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:27,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:27,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:27,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:27,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:27,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:27,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:27,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:27,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:27,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-08 15:54:27,909 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:27,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:27,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:27,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:27,912 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:27,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:27,913 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:27,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-08 15:54:27,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:27,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:27,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:27,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:27,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:27,916 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:27,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:27,916 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:27,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:27,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:27,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:27,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:27,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:27,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:27,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:27,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:27,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:27,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-08 15:54:27,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-08 15:54:27,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:27,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:27,920 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 -> 6677b5df0de82d6f15e79744b3d0d69c2e6d1112 [2019-12-08 15:54:28,218 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:28,231 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:28,235 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:28,236 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:28,237 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:28,238 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2019-12-08 15:54:28,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a0afff3/59f01ff64b3143f18e4997996129aa88/FLAGb17070f21 [2019-12-08 15:54:28,799 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:28,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2019-12-08 15:54:28,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a0afff3/59f01ff64b3143f18e4997996129aa88/FLAGb17070f21 [2019-12-08 15:54:29,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a0afff3/59f01ff64b3143f18e4997996129aa88 [2019-12-08 15:54:29,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:29,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:29,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:29,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:29,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:29,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:29" (1/1) ... [2019-12-08 15:54:29,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ae9fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29, skipping insertion in model container [2019-12-08 15:54:29,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:29" (1/1) ... [2019-12-08 15:54:29,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:29,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:29,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:29,390 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:29,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:29,442 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:29,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29 WrapperNode [2019-12-08 15:54:29,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:29,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:29,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:29,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:29,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29" (1/1) ... [2019-12-08 15:54:29,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29" (1/1) ... [2019-12-08 15:54:29,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:29,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:29,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:29,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:29,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29" (1/1) ... [2019-12-08 15:54:29,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29" (1/1) ... [2019-12-08 15:54:29,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29" (1/1) ... [2019-12-08 15:54:29,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29" (1/1) ... [2019-12-08 15:54:29,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29" (1/1) ... [2019-12-08 15:54:29,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29" (1/1) ... [2019-12-08 15:54:29,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29" (1/1) ... [2019-12-08 15:54:29,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:29,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:29,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:29,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:29,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:29,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-08 15:54:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-08 15:54:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-08 15:54:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:29,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:29,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-08 15:54:29,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:30,021 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:30,022 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-08 15:54:30,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:30 BoogieIcfgContainer [2019-12-08 15:54:30,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:30,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:30,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:30,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:30,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:29" (1/3) ... [2019-12-08 15:54:30,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc980fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:30, skipping insertion in model container [2019-12-08 15:54:30,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:29" (2/3) ... [2019-12-08 15:54:30,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc980fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:30, skipping insertion in model container [2019-12-08 15:54:30,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:30" (3/3) ... [2019-12-08 15:54:30,031 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2019-12-08 15:54:30,041 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:30,049 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:30,067 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:30,097 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:30,097 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:30,097 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:30,098 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:30,098 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:30,098 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:30,098 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:30,098 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:30,111 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-08 15:54:30,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-08 15:54:30,117 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:30,118 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:30,119 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:30,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:30,125 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2019-12-08 15:54:30,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:30,134 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609093260] [2019-12-08 15:54:30,134 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:30,250 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609093260] [2019-12-08 15:54:30,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:30,251 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-08 15:54:30,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045685900] [2019-12-08 15:54:30,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:30,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 15:54:30,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:30,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:30,269 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-12-08 15:54:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:30,287 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2019-12-08 15:54:30,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:30,288 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-08 15:54:30,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:30,299 INFO L225 Difference]: With dead ends: 52 [2019-12-08 15:54:30,299 INFO L226 Difference]: Without dead ends: 24 [2019-12-08 15:54:30,303 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:30,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-08 15:54:30,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-08 15:54:30,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-08 15:54:30,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-12-08 15:54:30,336 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2019-12-08 15:54:30,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:30,336 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-12-08 15:54:30,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:30,336 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-12-08 15:54:30,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-08 15:54:30,337 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:30,337 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:30,338 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:30,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:30,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2019-12-08 15:54:30,338 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:30,339 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837470359] [2019-12-08 15:54:30,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:30,652 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-08 15:54:30,652 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:54:30,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:54:30 BoogieIcfgContainer [2019-12-08 15:54:30,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:54:30,707 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:54:30,708 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:54:30,708 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:54:30,709 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:30" (3/4) ... [2019-12-08 15:54:30,714 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-08 15:54:30,715 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:54:30,720 INFO L168 Benchmark]: Toolchain (without parser) took 1574.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -111.4 MB). Peak memory consumption was 30.2 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:30,720 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:30,722 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.68 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 949.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:30,724 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:30,725 INFO L168 Benchmark]: Boogie Preprocessor took 35.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:30,726 INFO L168 Benchmark]: RCFGBuilder took 429.63 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:30,727 INFO L168 Benchmark]: TraceAbstraction took 682.63 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:30,728 INFO L168 Benchmark]: Witness Printer took 7.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:30,743 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 298.68 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 949.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 114.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.02 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 429.63 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: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 682.63 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: 32.8 MB). Peak memory consumption was 32.8 MB. Max. memory is 11.5 GB. * Witness Printer took 7.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 72, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = 1.0 / 0.0; [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] double res = trunc_double(x); [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 30 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=27occurred 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, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-c1f4b5c [2019-12-08 15:54:32,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:32,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:32,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:32,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:32,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:32,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:32,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:32,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:32,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:32,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:32,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:32,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:32,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:32,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:32,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:32,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:32,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:32,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:32,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:32,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:32,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:32,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:32,794 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:32,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:32,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:32,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:32,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:32,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:32,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:32,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:32,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:32,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:32,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:32,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:32,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:32,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:32,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:32,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:32,813 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:32,814 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:32,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-08 15:54:32,830 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:32,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:32,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:32,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:32,832 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:32,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:32,832 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:32,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:32,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:32,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:32,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:32,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:32,834 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-08 15:54:32,834 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-08 15:54:32,834 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:32,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:32,834 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:32,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:32,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:32,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:32,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:32,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:32,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:32,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:32,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:32,837 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:32,837 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-08 15:54:32,837 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-08 15:54:32,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:32,838 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:32,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-08 15:54:32,838 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 -> 6677b5df0de82d6f15e79744b3d0d69c2e6d1112 [2019-12-08 15:54:33,129 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:33,142 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:33,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:33,147 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:33,148 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:33,149 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2019-12-08 15:54:33,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb9c28a1/61f32b83849640cdb2c535f0fdc5e37e/FLAGe49f63aa2 [2019-12-08 15:54:33,706 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:33,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1072a.c [2019-12-08 15:54:33,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb9c28a1/61f32b83849640cdb2c535f0fdc5e37e/FLAGe49f63aa2 [2019-12-08 15:54:34,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb9c28a1/61f32b83849640cdb2c535f0fdc5e37e [2019-12-08 15:54:34,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:34,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:34,081 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:34,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:34,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:34,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:34" (1/1) ... [2019-12-08 15:54:34,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3691459d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34, skipping insertion in model container [2019-12-08 15:54:34,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:34" (1/1) ... [2019-12-08 15:54:34,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:34,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:34,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:34,442 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:34,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:34,601 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:34,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34 WrapperNode [2019-12-08 15:54:34,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:34,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:34,602 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:34,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:34,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34" (1/1) ... [2019-12-08 15:54:34,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34" (1/1) ... [2019-12-08 15:54:34,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:34,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:34,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:34,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:34,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34" (1/1) ... [2019-12-08 15:54:34,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34" (1/1) ... [2019-12-08 15:54:34,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34" (1/1) ... [2019-12-08 15:54:34,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34" (1/1) ... [2019-12-08 15:54:34,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34" (1/1) ... [2019-12-08 15:54:34,695 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34" (1/1) ... [2019-12-08 15:54:34,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34" (1/1) ... [2019-12-08 15:54:34,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:34,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:34,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:34,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:34,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-08 15:54:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-08 15:54:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-08 15:54:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:34,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-08 15:54:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:35,279 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:35,279 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-08 15:54:35,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:35 BoogieIcfgContainer [2019-12-08 15:54:35,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:35,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:35,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:35,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:35,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:34" (1/3) ... [2019-12-08 15:54:35,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df374c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:35, skipping insertion in model container [2019-12-08 15:54:35,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:34" (2/3) ... [2019-12-08 15:54:35,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df374c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:35, skipping insertion in model container [2019-12-08 15:54:35,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:35" (3/3) ... [2019-12-08 15:54:35,288 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2019-12-08 15:54:35,298 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:35,305 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:35,318 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:35,344 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:35,344 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:35,344 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:35,344 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:35,344 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:35,345 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:35,345 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:35,345 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:35,360 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-12-08 15:54:35,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-08 15:54:35,366 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:35,368 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:35,368 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:35,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:35,375 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2019-12-08 15:54:35,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:35,389 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838500004] [2019-12-08 15:54:35,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-08 15:54:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:35,587 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-08 15:54:35,593 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-08 15:54:35,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:35,609 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-08 15:54:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-08 15:54:35,616 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838500004] [2019-12-08 15:54:35,616 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:35,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-08 15:54:35,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89329069] [2019-12-08 15:54:35,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:35,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-08 15:54:35,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:35,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:35,641 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-12-08 15:54:35,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:35,666 INFO L93 Difference]: Finished difference Result 52 states and 80 transitions. [2019-12-08 15:54:35,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:35,667 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-08 15:54:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:35,679 INFO L225 Difference]: With dead ends: 52 [2019-12-08 15:54:35,679 INFO L226 Difference]: Without dead ends: 24 [2019-12-08 15:54:35,685 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:35,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-08 15:54:35,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-08 15:54:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-08 15:54:35,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-12-08 15:54:35,731 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2019-12-08 15:54:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:35,731 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-12-08 15:54:35,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:35,731 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-12-08 15:54:35,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-08 15:54:35,732 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:35,732 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:35,956 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-08 15:54:35,956 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:35,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:35,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2019-12-08 15:54:35,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:35,960 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584790661] [2019-12-08 15:54:35,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-08 15:54:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:36,360 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-08 15:54:36,360 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:54:36,562 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-08 15:54:36,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:54:36 BoogieIcfgContainer [2019-12-08 15:54:36,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:54:36,595 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:54:36,595 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:54:36,596 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:54:36,597 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:35" (3/4) ... [2019-12-08 15:54:36,599 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-08 15:54:36,696 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-12-08 15:54:36,696 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:54:36,699 INFO L168 Benchmark]: Toolchain (without parser) took 2619.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -100.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:36,699 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:36,700 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:36,700 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.98 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:36,701 INFO L168 Benchmark]: Boogie Preprocessor took 50.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:36,701 INFO L168 Benchmark]: RCFGBuilder took 574.85 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: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:36,702 INFO L168 Benchmark]: TraceAbstraction took 1313.11 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: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:36,702 INFO L168 Benchmark]: Witness Printer took 101.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-08 15:54:36,706 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 521.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 51.98 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 50.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 574.85 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: 26.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1313.11 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: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 11.5 GB. * Witness Printer took 101.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 89]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L84] double x = 1.0 / 0.0; [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] double res = trunc_double(x); [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...