./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_1131a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e3ed9850bae7d066050d32134f925a24fb3772d ............................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e3ed9850bae7d066050d32134f925a24fb3772d .......................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-c1f4b5c [2019-12-08 15:54:47,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:47,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:47,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:47,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:47,627 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:47,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:47,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:47,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:47,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:47,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:47,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:47,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:47,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:47,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:47,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:47,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:47,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:47,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:47,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:47,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:47,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:47,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:47,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:47,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:47,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:47,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:47,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:47,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:47,679 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:47,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:47,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:47,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:47,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:47,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:47,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:47,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:47,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:47,684 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:47,685 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:47,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:47,686 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-08 15:54:47,700 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:47,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:47,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:47,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:47,702 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:47,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:47,703 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:47,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-08 15:54:47,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:47,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:47,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:47,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:47,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:47,704 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:47,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:47,705 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:47,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:47,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:47,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:47,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:47,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:47,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:47,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:47,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:47,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:47,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-08 15:54:47,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-08 15:54:47,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:47,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:47,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e3ed9850bae7d066050d32134f925a24fb3772d [2019-12-08 15:54:48,016 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:48,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:48,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:48,041 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:48,043 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:48,044 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-12-08 15:54:48,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56dbec269/358a16c7133f492d8c2b532b9351a024/FLAG762859d4e [2019-12-08 15:54:48,614 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:48,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-12-08 15:54:48,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56dbec269/358a16c7133f492d8c2b532b9351a024/FLAG762859d4e [2019-12-08 15:54:48,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56dbec269/358a16c7133f492d8c2b532b9351a024 [2019-12-08 15:54:48,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:48,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:48,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:48,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:48,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:48,994 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:48,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e88a86d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:48, skipping insertion in model container [2019-12-08 15:54:48,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:48" (1/1) ... [2019-12-08 15:54:49,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:49,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:49,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:49,325 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:49,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:49,406 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:49,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:49 WrapperNode [2019-12-08 15:54:49,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:49,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:49,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:49,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:49,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:49" (1/1) ... [2019-12-08 15:54:49,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:49" (1/1) ... [2019-12-08 15:54:49,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:49,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:49,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:49,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:49,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:49" (1/1) ... [2019-12-08 15:54:49,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:49" (1/1) ... [2019-12-08 15:54:49,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:49" (1/1) ... [2019-12-08 15:54:49,489 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:49" (1/1) ... [2019-12-08 15:54:49,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:49" (1/1) ... [2019-12-08 15:54:49,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:49" (1/1) ... [2019-12-08 15:54:49,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:49" (1/1) ... [2019-12-08 15:54:49,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:49,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:49,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:49,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:49,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:49" (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 15:54:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-08 15:54:49,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-12-08 15:54:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-08 15:54:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:49,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:49,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-08 15:54:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2019-12-08 15:54:49,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:50,174 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:50,175 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-08 15:54:50,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:50 BoogieIcfgContainer [2019-12-08 15:54:50,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:50,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:50,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:50,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:50,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:48" (1/3) ... [2019-12-08 15:54:50,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705fb5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:50, skipping insertion in model container [2019-12-08 15:54:50,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:49" (2/3) ... [2019-12-08 15:54:50,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705fb5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:50, skipping insertion in model container [2019-12-08 15:54:50,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:50" (3/3) ... [2019-12-08 15:54:50,185 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2019-12-08 15:54:50,195 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:50,203 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:50,215 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:50,241 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:50,241 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:50,242 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:50,242 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:50,242 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:50,242 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:50,242 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:50,243 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-12-08 15:54:50,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-08 15:54:50,270 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:50,271 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:50,271 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:50,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2019-12-08 15:54:50,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:50,286 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940234879] [2019-12-08 15:54:50,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:50,412 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 15:54:50,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940234879] [2019-12-08 15:54:50,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:50,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-08 15:54:50,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301146053] [2019-12-08 15:54:50,419 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:50,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-08 15:54:50,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:50,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:50,432 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-12-08 15:54:50,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:50,460 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2019-12-08 15:54:50,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:50,461 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-08 15:54:50,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:50,474 INFO L225 Difference]: With dead ends: 118 [2019-12-08 15:54:50,474 INFO L226 Difference]: Without dead ends: 56 [2019-12-08 15:54:50,478 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 15:54:50,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-08 15:54:50,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-08 15:54:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-08 15:54:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2019-12-08 15:54:50,522 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2019-12-08 15:54:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:50,523 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2019-12-08 15:54:50,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:50,523 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2019-12-08 15:54:50,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-08 15:54:50,524 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:50,524 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:50,524 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:50,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:50,525 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2019-12-08 15:54:50,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-08 15:54:50,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601299102] [2019-12-08 15:54:50,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-08 15:54:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:54:50,747 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-08 15:54:50,747 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:54:50,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:54:50 BoogieIcfgContainer [2019-12-08 15:54:50,784 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:54:50,784 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:54:50,785 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:54:50,785 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:54:50,786 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:50" (3/4) ... [2019-12-08 15:54:50,790 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-08 15:54:50,790 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:54:50,793 INFO L168 Benchmark]: Toolchain (without parser) took 1805.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -89.9 MB). Peak memory consumption was 50.6 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:50,794 INFO L168 Benchmark]: CDTParser took 0.72 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 15:54:50,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -167.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:50,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.50 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:50,797 INFO L168 Benchmark]: Boogie Preprocessor took 45.30 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 15:54:50,798 INFO L168 Benchmark]: RCFGBuilder took 657.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. [2019-12-08 15:54:50,799 INFO L168 Benchmark]: TraceAbstraction took 606.77 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 15:54:50,800 INFO L168 Benchmark]: Witness Printer took 5.93 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 15:54:50,804 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 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 418.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -167.4 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 65.50 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.30 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 657.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 606.77 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 5.93 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={3:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L164] __int32_t hx; VAL [one_fmod=1, Zero_fmod={3:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={3:0}] [L183] COND TRUE isfinite_double(x) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={3:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={3:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={3:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={3:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-c1f4b5c [2019-12-08 15:54:52,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-08 15:54:52,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-08 15:54:52,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-08 15:54:52,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-08 15:54:52,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-08 15:54:52,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-08 15:54:52,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-08 15:54:52,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-08 15:54:52,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-08 15:54:52,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-08 15:54:52,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-08 15:54:52,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-08 15:54:52,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-08 15:54:52,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-08 15:54:52,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-08 15:54:52,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-08 15:54:52,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-08 15:54:52,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-08 15:54:52,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-08 15:54:52,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-08 15:54:52,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-08 15:54:52,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-08 15:54:52,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-08 15:54:52,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-08 15:54:52,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-08 15:54:52,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-08 15:54:52,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-08 15:54:52,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-08 15:54:52,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-08 15:54:52,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-08 15:54:52,724 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-08 15:54:52,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-08 15:54:52,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-08 15:54:52,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-08 15:54:52,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-08 15:54:52,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-08 15:54:52,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-08 15:54:52,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-08 15:54:52,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-08 15:54:52,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-08 15:54:52,734 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-08 15:54:52,762 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-08 15:54:52,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-08 15:54:52,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-08 15:54:52,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-08 15:54:52,764 INFO L138 SettingsManager]: * Use SBE=true [2019-12-08 15:54:52,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-08 15:54:52,765 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-08 15:54:52,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-08 15:54:52,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-08 15:54:52,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-08 15:54:52,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-08 15:54:52,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-08 15:54:52,767 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-08 15:54:52,767 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-08 15:54:52,768 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-08 15:54:52,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-08 15:54:52,768 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-08 15:54:52,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-08 15:54:52,769 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-08 15:54:52,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-08 15:54:52,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-08 15:54:52,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-08 15:54:52,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-08 15:54:52,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-08 15:54:52,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-08 15:54:52,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-08 15:54:52,771 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-08 15:54:52,771 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-08 15:54:52,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-08 15:54:52,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-08 15:54:52,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-08 15:54:52,772 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e3ed9850bae7d066050d32134f925a24fb3772d [2019-12-08 15:54:53,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-08 15:54:53,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-08 15:54:53,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-08 15:54:53,181 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-08 15:54:53,182 INFO L275 PluginConnector]: CDTParser initialized [2019-12-08 15:54:53,183 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-12-08 15:54:53,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b2ea95b/50d9fc7ce7b2463881a39579f675e2f0/FLAGe12673057 [2019-12-08 15:54:53,712 INFO L306 CDTParser]: Found 1 translation units. [2019-12-08 15:54:53,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131a.c [2019-12-08 15:54:53,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b2ea95b/50d9fc7ce7b2463881a39579f675e2f0/FLAGe12673057 [2019-12-08 15:54:54,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7b2ea95b/50d9fc7ce7b2463881a39579f675e2f0 [2019-12-08 15:54:54,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-08 15:54:54,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-08 15:54:54,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:54,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-08 15:54:54,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-08 15:54:54,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:54" (1/1) ... [2019-12-08 15:54:54,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1766c8cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54, skipping insertion in model container [2019-12-08 15:54:54,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 03:54:54" (1/1) ... [2019-12-08 15:54:54,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-08 15:54:54,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-08 15:54:54,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:54,467 INFO L203 MainTranslator]: Completed pre-run [2019-12-08 15:54:54,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-08 15:54:54,587 INFO L208 MainTranslator]: Completed translation [2019-12-08 15:54:54,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54 WrapperNode [2019-12-08 15:54:54,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-08 15:54:54,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:54,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-08 15:54:54,592 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-08 15:54:54,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54" (1/1) ... [2019-12-08 15:54:54,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54" (1/1) ... [2019-12-08 15:54:54,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-08 15:54:54,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-08 15:54:54,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-08 15:54:54,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-08 15:54:54,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54" (1/1) ... [2019-12-08 15:54:54,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54" (1/1) ... [2019-12-08 15:54:54,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54" (1/1) ... [2019-12-08 15:54:54,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54" (1/1) ... [2019-12-08 15:54:54,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54" (1/1) ... [2019-12-08 15:54:54,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54" (1/1) ... [2019-12-08 15:54:54,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54" (1/1) ... [2019-12-08 15:54:54,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-08 15:54:54,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-08 15:54:54,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-08 15:54:54,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-08 15:54:54,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54" (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 15:54:54,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-12-08 15:54:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-12-08 15:54:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-08 15:54:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2019-12-08 15:54:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-08 15:54:54,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-08 15:54:54,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-08 15:54:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-08 15:54:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-08 15:54:58,588 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-08 15:54:58,589 INFO L287 CfgBuilder]: Removed 24 assume(true) statements. [2019-12-08 15:54:58,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:58 BoogieIcfgContainer [2019-12-08 15:54:58,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-08 15:54:58,591 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-08 15:54:58,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-08 15:54:58,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-08 15:54:58,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 03:54:54" (1/3) ... [2019-12-08 15:54:58,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b853be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:58, skipping insertion in model container [2019-12-08 15:54:58,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 03:54:54" (2/3) ... [2019-12-08 15:54:58,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b853be9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 03:54:58, skipping insertion in model container [2019-12-08 15:54:58,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:58" (3/3) ... [2019-12-08 15:54:58,598 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2019-12-08 15:54:58,608 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-08 15:54:58,616 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-08 15:54:58,626 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-08 15:54:58,647 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-08 15:54:58,648 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-08 15:54:58,648 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-08 15:54:58,648 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-08 15:54:58,648 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-08 15:54:58,648 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-08 15:54:58,648 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-08 15:54:58,649 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-08 15:54:58,663 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-12-08 15:54:58,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-08 15:54:58,670 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:58,671 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:54:58,671 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:54:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:54:58,677 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2019-12-08 15:54:58,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:54:58,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241164671] [2019-12-08 15:54:58,689 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 15:54:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-08 15:54:59,707 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-08 15:54:59,712 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-08 15:54:59,724 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 15:54:59,724 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-08 15:54:59,728 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 15:54:59,729 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241164671] [2019-12-08 15:54:59,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-08 15:54:59,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-08 15:54:59,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338154641] [2019-12-08 15:54:59,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-08 15:54:59,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-08 15:54:59,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-08 15:54:59,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-08 15:54:59,752 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-12-08 15:54:59,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-08 15:54:59,775 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2019-12-08 15:54:59,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-08 15:54:59,777 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-12-08 15:54:59,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-08 15:54:59,789 INFO L225 Difference]: With dead ends: 118 [2019-12-08 15:54:59,789 INFO L226 Difference]: Without dead ends: 56 [2019-12-08 15:54:59,792 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 15:54:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-08 15:54:59,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2019-12-08 15:54:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-12-08 15:54:59,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2019-12-08 15:54:59,834 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2019-12-08 15:54:59,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-08 15:54:59,835 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2019-12-08 15:54:59,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-08 15:54:59,835 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2019-12-08 15:54:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-08 15:54:59,836 INFO L403 BasicCegarLoop]: Found error trace [2019-12-08 15:54:59,836 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-08 15:55:00,049 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-08 15:55:00,050 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-08 15:55:00,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-08 15:55:00,051 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2019-12-08 15:55:00,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-08 15:55:00,052 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343817505] [2019-12-08 15:55:00,052 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 15:55:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:55:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-08 15:55:02,707 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-08 15:55:02,707 INFO L476 BasicCegarLoop]: Counterexample might be feasible [2019-12-08 15:55:02,909 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-08 15:55:02,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 03:55:02 BoogieIcfgContainer [2019-12-08 15:55:02,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-08 15:55:02,964 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-08 15:55:02,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-08 15:55:02,965 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-08 15:55:02,965 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 03:54:58" (3/4) ... [2019-12-08 15:55:02,967 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-08 15:55:03,038 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-12-08 15:55:03,038 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-08 15:55:03,041 INFO L168 Benchmark]: Toolchain (without parser) took 8969.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -83.1 MB). Peak memory consumption was 70.5 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:03,041 INFO L168 Benchmark]: CDTParser took 0.20 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 15:55:03,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 517.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:03,042 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:03,043 INFO L168 Benchmark]: Boogie Preprocessor took 47.41 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 15:55:03,044 INFO L168 Benchmark]: RCFGBuilder took 3889.46 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: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:03,044 INFO L168 Benchmark]: TraceAbstraction took 4372.43 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: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:03,045 INFO L168 Benchmark]: Witness Printer took 74.06 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: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. [2019-12-08 15:55:03,048 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 517.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -186.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 63.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.41 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 3889.46 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: 37.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4372.43 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: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 11.5 GB. * Witness Printer took 74.06 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: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 189]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L164] __int32_t hx; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L183] COND TRUE isfinite_double(x) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1.0, Zero_fmod={2:0}] [L189] __VERIFIER_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...