./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.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_1032c.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f ................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.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_1032c.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f ......................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-9a8b2e8 [2020-10-20 00:32:32,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:32,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:32,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:32,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:32,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:32,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:32,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:32,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:32,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:32,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:32,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:32,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:32,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:32,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:32,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:32,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:32,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:32,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:32,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:32,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:32,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:32,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:32,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:32,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:32,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:32,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:32,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:32,474 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:32,475 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:32,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:32,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:32,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:32,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:32,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:32,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:32,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:32,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:32,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:32,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:32,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:32,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:32:32,524 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:32,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:32,527 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:32,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:32,528 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:32,528 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:32,528 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:32,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:32:32,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:32,529 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:32,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:32,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:32,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:32,531 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:32,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:32,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:32,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:32,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:32,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:32,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:32,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:32,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:32,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:32,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:32,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:32,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:32:32,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:32:32,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:32,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:32,535 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(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f [2020-10-20 00:32:32,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:32,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:32,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:32,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:32,776 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:32,777 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-10-20 00:32:32,852 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7b49c7e1/0ec1862b49ab4674a1798b2e8537c140/FLAGb33d2849e [2020-10-20 00:32:33,348 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:33,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-10-20 00:32:33,356 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7b49c7e1/0ec1862b49ab4674a1798b2e8537c140/FLAGb33d2849e [2020-10-20 00:32:33,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7b49c7e1/0ec1862b49ab4674a1798b2e8537c140 [2020-10-20 00:32:33,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:33,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:33,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:33,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:33,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:33,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:33" (1/1) ... [2020-10-20 00:32:33,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d8b7e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:33, skipping insertion in model container [2020-10-20 00:32:33,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:33" (1/1) ... [2020-10-20 00:32:33,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:33,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:34,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:34,029 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:34,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:34,090 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:34,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:34 WrapperNode [2020-10-20 00:32:34,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:34,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:34,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:34,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:34,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:34" (1/1) ... [2020-10-20 00:32:34,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:34" (1/1) ... [2020-10-20 00:32:34,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:34,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:34,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:34,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:34,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:34" (1/1) ... [2020-10-20 00:32:34,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:34" (1/1) ... [2020-10-20 00:32:34,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:34" (1/1) ... [2020-10-20 00:32:34,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:34" (1/1) ... [2020-10-20 00:32:34,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:34" (1/1) ... [2020-10-20 00:32:34,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:34" (1/1) ... [2020-10-20 00:32:34,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:34" (1/1) ... [2020-10-20 00:32:34,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:34,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:34,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:34,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:34,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:34" (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 [2020-10-20 00:32:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:32:34,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:34,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-20 00:32:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:32:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-20 00:32:34,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:34,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:32:34,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:34,703 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:34,703 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:32:34,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:34 BoogieIcfgContainer [2020-10-20 00:32:34,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:34,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:34,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:34,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:34,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:33" (1/3) ... [2020-10-20 00:32:34,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37cf8380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:34, skipping insertion in model container [2020-10-20 00:32:34,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:34" (2/3) ... [2020-10-20 00:32:34,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37cf8380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:34, skipping insertion in model container [2020-10-20 00:32:34,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:34" (3/3) ... [2020-10-20 00:32:34,714 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-10-20 00:32:34,726 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:34,734 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:34,746 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:34,769 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:34,769 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:34,769 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:34,769 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:34,769 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:34,770 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:34,770 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:34,770 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:34,785 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-20 00:32:34,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:32:34,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:34,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:34,793 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:34,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:34,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-10-20 00:32:34,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:34,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726664018] [2020-10-20 00:32:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:34,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:34,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726664018] [2020-10-20 00:32:34,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:34,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:32:34,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300441942] [2020-10-20 00:32:34,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:34,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:32:34,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:34,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:34,982 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-10-20 00:32:35,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:35,004 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-10-20 00:32:35,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:35,005 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-20 00:32:35,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:35,017 INFO L225 Difference]: With dead ends: 57 [2020-10-20 00:32:35,017 INFO L226 Difference]: Without dead ends: 26 [2020-10-20 00:32:35,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:35,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-20 00:32:35,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-20 00:32:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-20 00:32:35,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-10-20 00:32:35,055 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-10-20 00:32:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:35,055 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-20 00:32:35,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-10-20 00:32:35,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:32:35,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:35,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:35,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:32:35,057 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:35,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:35,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-10-20 00:32:35,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:32:35,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106142152] [2020-10-20 00:32:35,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:32:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:35,173 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:35,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:35,294 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:35,326 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:32:35,327 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:32:35,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:32:35,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:35 BoogieIcfgContainer [2020-10-20 00:32:35,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:35,377 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:35,377 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:35,377 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:35,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:34" (3/4) ... [2020-10-20 00:32:35,383 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:32:35,383 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:35,387 INFO L168 Benchmark]: Toolchain (without parser) took 1685.91 ms. Allocated memory was 34.6 MB in the beginning and 46.1 MB in the end (delta: 11.5 MB). Free memory was 16.2 MB in the beginning and 26.7 MB in the end (delta: -10.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,388 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 33.6 MB. Free memory was 11.0 MB in the beginning and 10.9 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.45 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 15.3 MB in the beginning and 23.3 MB in the end (delta: -8.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,390 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.81 ms. Allocated memory is still 43.0 MB. Free memory was 23.3 MB in the beginning and 21.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,391 INFO L168 Benchmark]: Boogie Preprocessor took 35.87 ms. Allocated memory is still 43.0 MB. Free memory was 21.2 MB in the beginning and 19.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,392 INFO L168 Benchmark]: RCFGBuilder took 526.94 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 19.3 MB in the beginning and 25.6 MB in the end (delta: -6.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,393 INFO L168 Benchmark]: TraceAbstraction took 669.91 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 25.1 MB in the beginning and 27.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,394 INFO L168 Benchmark]: Witness Printer took 6.80 ms. Allocated memory is still 46.1 MB. Free memory was 27.0 MB in the beginning and 26.7 MB in the end (delta: 309.4 kB). Peak memory consumption was 309.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:35,401 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 33.6 MB. Free memory was 11.0 MB in the beginning and 10.9 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 386.45 ms. Allocated memory was 34.6 MB in the beginning and 43.0 MB in the end (delta: 8.4 MB). Free memory was 15.3 MB in the beginning and 23.3 MB in the end (delta: -8.0 MB). Peak memory consumption was 10.9 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 49.81 ms. Allocated memory is still 43.0 MB. Free memory was 23.3 MB in the beginning and 21.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 35.87 ms. Allocated memory is still 43.0 MB. Free memory was 21.2 MB in the beginning and 19.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 526.94 ms. Allocated memory was 43.0 MB in the beginning and 44.6 MB in the end (delta: 1.6 MB). Free memory was 19.3 MB in the beginning and 25.6 MB in the end (delta: -6.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 669.91 ms. Allocated memory was 44.6 MB in the beginning and 46.1 MB in the end (delta: 1.6 MB). Free memory was 25.1 MB in the beginning and 27.3 MB in the end (delta: -2.2 MB). Peak memory consumption was 17.8 MB. Max. memory is 14.3 GB. * Witness Printer took 6.80 ms. Allocated memory is still 46.1 MB. Free memory was 27.0 MB in the beginning and 26.7 MB in the end (delta: 309.4 kB). Peak memory consumption was 309.4 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 33, overapproximation of bitwiseOr at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 74. Possible FailurePath: [L88] double x = 1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND TRUE exponent_less_1023 < 20 [L27] COND FALSE !(exponent_less_1023 < 0) [L33] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L34] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L35] return x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 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=30occurred 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:32:37,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:32:37,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:32:37,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:32:37,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:32:37,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:32:37,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:32:37,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:32:37,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:32:37,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:32:37,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:32:37,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:32:37,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:32:37,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:32:37,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:32:37,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:32:37,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:32:37,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:32:37,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:32:37,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:32:37,671 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:32:37,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:32:37,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:32:37,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:32:37,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:32:37,677 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:32:37,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:32:37,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:32:37,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:32:37,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:32:37,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:32:37,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:32:37,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:32:37,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:32:37,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:32:37,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:32:37,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:32:37,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:32:37,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:32:37,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:32:37,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:32:37,687 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:32:37,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:32:37,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:32:37,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:32:37,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:32:37,716 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:32:37,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:32:37,716 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:32:37,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:32:37,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:32:37,717 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:32:37,717 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:32:37,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:32:37,718 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:32:37,718 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:32:37,718 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:32:37,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:32:37,719 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:32:37,719 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:32:37,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:32:37,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:32:37,720 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:32:37,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:32:37,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:37,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:32:37,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:32:37,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:32:37,722 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:32:37,722 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:32:37,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:32:37,722 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:32:37,723 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:32:37,723 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(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f [2020-10-20 00:32:37,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:32:37,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:32:37,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:32:37,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:32:37,961 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:32:37,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-10-20 00:32:38,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e024671e/b3c2f21c52f14936b238840d974ecf21/FLAGfe77d1159 [2020-10-20 00:32:38,635 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:32:38,636 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032c.c [2020-10-20 00:32:38,643 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e024671e/b3c2f21c52f14936b238840d974ecf21/FLAGfe77d1159 [2020-10-20 00:32:39,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e024671e/b3c2f21c52f14936b238840d974ecf21 [2020-10-20 00:32:39,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:32:39,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:32:39,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:39,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:32:39,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:32:39,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:39" (1/1) ... [2020-10-20 00:32:39,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628fe787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39, skipping insertion in model container [2020-10-20 00:32:39,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:32:39" (1/1) ... [2020-10-20 00:32:39,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:32:39,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:32:39,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:39,297 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:32:39,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:32:39,356 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:32:39,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39 WrapperNode [2020-10-20 00:32:39,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:32:39,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:39,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:32:39,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:32:39,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39" (1/1) ... [2020-10-20 00:32:39,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39" (1/1) ... [2020-10-20 00:32:39,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:32:39,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:32:39,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:32:39,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:32:39,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39" (1/1) ... [2020-10-20 00:32:39,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39" (1/1) ... [2020-10-20 00:32:39,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39" (1/1) ... [2020-10-20 00:32:39,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39" (1/1) ... [2020-10-20 00:32:39,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39" (1/1) ... [2020-10-20 00:32:39,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39" (1/1) ... [2020-10-20 00:32:39,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39" (1/1) ... [2020-10-20 00:32:39,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:32:39,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:32:39,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:32:39,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:32:39,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:32:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-20 00:32:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-20 00:32:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:32:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:32:39,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-20 00:32:39,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:32:39,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:32:39,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-20 00:32:39,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 00:32:40,145 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:32:40,145 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-20 00:32:40,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:40 BoogieIcfgContainer [2020-10-20 00:32:40,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:32:40,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:32:40,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:32:40,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:32:40,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:32:39" (1/3) ... [2020-10-20 00:32:40,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70490b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:40, skipping insertion in model container [2020-10-20 00:32:40,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:32:39" (2/3) ... [2020-10-20 00:32:40,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70490b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:32:40, skipping insertion in model container [2020-10-20 00:32:40,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:40" (3/3) ... [2020-10-20 00:32:40,165 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-10-20 00:32:40,177 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:32:40,186 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:32:40,200 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:32:40,223 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:32:40,224 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:32:40,224 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:32:40,224 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:32:40,224 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:32:40,224 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:32:40,225 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:32:40,225 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:32:40,239 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-20 00:32:40,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:32:40,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:40,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:40,248 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:40,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:40,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-10-20 00:32:40,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:40,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419895775] [2020-10-20 00:32:40,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-20 00:32:40,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:40,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:32:40,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:32:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:40,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:32:40,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:40,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419895775] [2020-10-20 00:32:40,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:40,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:32:40,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326654066] [2020-10-20 00:32:40,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:32:40,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:32:40,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:32:40,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:32:40,451 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-10-20 00:32:40,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:40,468 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-10-20 00:32:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:32:40,470 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-20 00:32:40,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:40,480 INFO L225 Difference]: With dead ends: 57 [2020-10-20 00:32:40,480 INFO L226 Difference]: Without dead ends: 26 [2020-10-20 00:32:40,484 INFO L677 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 [2020-10-20 00:32:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-20 00:32:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-20 00:32:40,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-20 00:32:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-10-20 00:32:40,518 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-10-20 00:32:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:40,519 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-10-20 00:32:40,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:32:40,519 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-10-20 00:32:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:32:40,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:40,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:40,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:32:40,735 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:40,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:40,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-10-20 00:32:40,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:40,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405547335] [2020-10-20 00:32:40,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-20 00:32:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:32:40,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 00:32:40,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:32:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:41,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:32:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:32:41,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405547335] [2020-10-20 00:32:41,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:32:41,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-20 00:32:41,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839031139] [2020-10-20 00:32:41,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 00:32:41,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:32:41,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 00:32:41,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:32:41,298 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 8 states. [2020-10-20 00:32:41,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:32:41,604 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-10-20 00:32:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 00:32:41,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-20 00:32:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:32:41,606 INFO L225 Difference]: With dead ends: 34 [2020-10-20 00:32:41,606 INFO L226 Difference]: Without dead ends: 16 [2020-10-20 00:32:41,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-20 00:32:41,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-20 00:32:41,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-20 00:32:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-20 00:32:41,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-10-20 00:32:41,613 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-10-20 00:32:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:32:41,614 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-10-20 00:32:41,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 00:32:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-10-20 00:32:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 00:32:41,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:32:41,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:32:41,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:32:41,829 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:32:41,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:32:41,829 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2020-10-20 00:32:41,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:32:41,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991626909] [2020-10-20 00:32:41,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-20 00:32:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:42,092 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:32:42,251 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:32:42,304 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-20 00:32:42,306 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:32:42,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-20 00:32:42,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:32:42 BoogieIcfgContainer [2020-10-20 00:32:42,547 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:32:42,547 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:32:42,548 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:32:42,548 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:32:42,549 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:32:40" (3/4) ... [2020-10-20 00:32:42,551 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:32:42,614 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:32:42,615 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:32:42,618 INFO L168 Benchmark]: Toolchain (without parser) took 3604.02 ms. Allocated memory was 38.8 MB in the beginning and 45.1 MB in the end (delta: 6.3 MB). Free memory was 16.0 MB in the beginning and 13.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 8.9 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:42,619 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 30.4 MB. Free memory was 16.5 MB in the beginning and 16.5 MB in the end (delta: 34.1 kB). Peak memory consumption was 34.1 kB. Max. memory is 14.3 GB. [2020-10-20 00:32:42,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.78 ms. Allocated memory was 38.8 MB in the beginning and 39.8 MB in the end (delta: 1.0 MB). Free memory was 15.1 MB in the beginning and 13.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:42,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.14 ms. Allocated memory is still 39.8 MB. Free memory was 13.0 MB in the beginning and 11.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:42,621 INFO L168 Benchmark]: Boogie Preprocessor took 43.67 ms. Allocated memory is still 39.8 MB. Free memory was 11.0 MB in the beginning and 9.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:42,622 INFO L168 Benchmark]: RCFGBuilder took 695.00 ms. Allocated memory was 39.8 MB in the beginning and 41.4 MB in the end (delta: 1.6 MB). Free memory was 9.0 MB in the beginning and 17.0 MB in the end (delta: -7.9 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:42,623 INFO L168 Benchmark]: TraceAbstraction took 2396.32 ms. Allocated memory was 41.4 MB in the beginning and 45.1 MB in the end (delta: 3.7 MB). Free memory was 16.7 MB in the beginning and 16.0 MB in the end (delta: 686.4 kB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:42,623 INFO L168 Benchmark]: Witness Printer took 67.69 ms. Allocated memory is still 45.1 MB. Free memory was 16.0 MB in the beginning and 13.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:32:42,628 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 30.4 MB. Free memory was 16.5 MB in the beginning and 16.5 MB in the end (delta: 34.1 kB). Peak memory consumption was 34.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 337.78 ms. Allocated memory was 38.8 MB in the beginning and 39.8 MB in the end (delta: 1.0 MB). Free memory was 15.1 MB in the beginning and 13.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 52.14 ms. Allocated memory is still 39.8 MB. Free memory was 13.0 MB in the beginning and 11.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 43.67 ms. Allocated memory is still 39.8 MB. Free memory was 11.0 MB in the beginning and 9.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 695.00 ms. Allocated memory was 39.8 MB in the beginning and 41.4 MB in the end (delta: 1.6 MB). Free memory was 9.0 MB in the beginning and 17.0 MB in the end (delta: -7.9 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2396.32 ms. Allocated memory was 41.4 MB in the beginning and 45.1 MB in the end (delta: 3.7 MB). Free memory was 16.7 MB in the beginning and 16.0 MB in the end (delta: 686.4 kB). Peak memory consumption was 4.4 MB. Max. memory is 14.3 GB. * Witness Printer took 67.69 ms. Allocated memory is still 45.1 MB. Free memory was 16.0 MB in the beginning and 13.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L88] double x = 1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND FALSE !(exponent_less_1023 < 20) [L40] COND TRUE exponent_less_1023 > 51 [L41] COND TRUE exponent_less_1023 == 1024 [L42] return x + x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 44 SDslu, 6 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 5 QuantifiedInterpolants, 2276 SizeOfPredicates, 8 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...