./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 096883e9 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_1.5.800.v20200727-1323.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_1130a.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 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ................................................................................................................................................................................................................................................................................................................. 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_1.5.800.v20200727-1323.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_1130a.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 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ............................................................................................................................................................................................................................................................................................................................. 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 0.2.0-096883e [2020-12-01 23:20:42,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:42,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:42,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:42,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:42,485 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:42,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:42,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:42,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:42,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:42,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:42,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:42,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:42,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:42,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:42,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:42,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:42,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:42,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:42,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:42,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:42,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:42,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:42,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:42,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:42,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:42,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:42,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:42,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:42,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:42,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:42,566 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:42,568 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:42,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:42,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:42,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:42,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:42,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:42,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:42,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:42,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:42,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:20:42,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:42,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:42,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:42,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:42,619 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:42,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:42,619 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:42,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:20:42,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:42,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:42,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:42,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:42,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:42,621 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:42,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:42,621 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:42,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:42,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:42,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:42,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:42,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:42,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:42,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:42,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:42,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:42,624 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:20:42,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:20:42,625 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:42,625 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:42,625 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-12-01 23:20:43,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:43,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:43,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:43,128 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:43,129 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:43,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-12-01 23:20:43,206 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593efe0a1/f931b67c8c3444f1a02beaad60a976af/FLAG93474512a [2020-12-01 23:20:43,813 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:43,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-12-01 23:20:43,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593efe0a1/f931b67c8c3444f1a02beaad60a976af/FLAG93474512a [2020-12-01 23:20:44,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/593efe0a1/f931b67c8c3444f1a02beaad60a976af [2020-12-01 23:20:44,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:44,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:44,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:44,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:44,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:44,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da0e1c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44, skipping insertion in model container [2020-12-01 23:20:44,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:44,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:44,432 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2020-12-01 23:20:44,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:44,445 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:44,499 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2020-12-01 23:20:44,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:44,527 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:44,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44 WrapperNode [2020-12-01 23:20:44,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:44,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:44,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:44,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:44,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:44,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:44,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:44,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:44,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44" (1/1) ... [2020-12-01 23:20:44,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:44,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:44,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:44,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:44,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44" (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 [2020-12-01 23:20:44,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:20:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 23:20:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 23:20:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 23:20:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:44,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:44,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 23:20:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-01 23:20:44,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:45,438 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:45,438 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-01 23:20:45,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:45 BoogieIcfgContainer [2020-12-01 23:20:45,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:45,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:45,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:45,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:45,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:44" (1/3) ... [2020-12-01 23:20:45,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326a0f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:45, skipping insertion in model container [2020-12-01 23:20:45,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:44" (2/3) ... [2020-12-01 23:20:45,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326a0f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:45, skipping insertion in model container [2020-12-01 23:20:45,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:45" (3/3) ... [2020-12-01 23:20:45,449 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-12-01 23:20:45,465 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:45,469 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:45,482 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:45,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:45,509 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:45,509 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:45,509 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:45,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:45,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:45,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:45,510 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:45,524 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-12-01 23:20:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 23:20:45,529 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:45,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:45,530 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:45,536 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-12-01 23:20:45,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:45,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539353926] [2020-12-01 23:20:45,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:45,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539353926] [2020-12-01 23:20:45,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:45,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 23:20:45,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246168540] [2020-12-01 23:20:45,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:45,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:20:45,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:45,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:45,730 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-12-01 23:20:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:45,755 INFO L93 Difference]: Finished difference Result 119 states and 208 transitions. [2020-12-01 23:20:45,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:45,757 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-01 23:20:45,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:45,768 INFO L225 Difference]: With dead ends: 119 [2020-12-01 23:20:45,768 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 23:20:45,772 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 [2020-12-01 23:20:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 23:20:45,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-01 23:20:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-01 23:20:45,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-12-01 23:20:45,815 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-12-01 23:20:45,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:45,816 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-12-01 23:20:45,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-12-01 23:20:45,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 23:20:45,817 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:45,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:45,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:20:45,817 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:45,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:45,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-12-01 23:20:45,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:45,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554793995] [2020-12-01 23:20:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:45,932 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:45,991 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:46,024 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 23:20:46,024 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:20:46,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 23:20:46,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:20:46 BoogieIcfgContainer [2020-12-01 23:20:46,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:20:46,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:20:46,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:20:46,069 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:20:46,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:45" (3/4) ... [2020-12-01 23:20:46,074 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 23:20:46,074 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:20:46,077 INFO L168 Benchmark]: Toolchain (without parser) took 1951.74 ms. Allocated memory was 41.9 MB in the beginning and 60.8 MB in the end (delta: 18.9 MB). Free memory was 19.6 MB in the beginning and 37.7 MB in the end (delta: -18.1 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:46,079 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 41.9 MB. Free memory was 27.6 MB in the beginning and 27.6 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:46,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.23 ms. Allocated memory is still 41.9 MB. Free memory was 19.4 MB in the beginning and 26.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:46,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.66 ms. Allocated memory is still 41.9 MB. Free memory was 26.1 MB in the beginning and 23.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:46,082 INFO L168 Benchmark]: Boogie Preprocessor took 67.96 ms. Allocated memory is still 41.9 MB. Free memory was 23.5 MB in the beginning and 21.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:46,083 INFO L168 Benchmark]: RCFGBuilder took 777.71 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 21.4 MB in the beginning and 28.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:46,084 INFO L168 Benchmark]: TraceAbstraction took 626.61 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 38.0 MB in the end (delta: -9.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:46,085 INFO L168 Benchmark]: Witness Printer took 5.73 ms. Allocated memory is still 60.8 MB. Free memory was 38.0 MB in the beginning and 37.7 MB in the end (delta: 317.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:46,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 41.9 MB. Free memory was 27.6 MB in the beginning and 27.6 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 402.23 ms. Allocated memory is still 41.9 MB. Free memory was 19.4 MB in the beginning and 26.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.66 ms. Allocated memory is still 41.9 MB. Free memory was 26.1 MB in the beginning and 23.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.96 ms. Allocated memory is still 41.9 MB. Free memory was 23.5 MB in the beginning and 21.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 777.71 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 21.4 MB in the beginning and 28.9 MB in the end (delta: -7.5 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 626.61 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 28.5 MB in the beginning and 38.0 MB in the end (delta: -9.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.73 ms. Allocated memory is still 60.8 MB. Free memory was 38.0 MB in the beginning and 37.7 MB in the end (delta: 317.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 193]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, Zero_fmod={9:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 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: 89 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=61occurred 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, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-096883e [2020-12-01 23:20:48,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:48,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:48,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:48,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:48,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:48,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:48,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:48,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:48,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:48,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:48,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:48,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:48,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:48,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:48,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:48,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:48,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:48,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:48,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:48,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:48,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:48,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:48,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:48,835 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:48,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:48,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:48,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:48,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:48,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:48,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:48,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:48,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:48,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:48,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:48,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:48,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:48,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:48,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:48,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:48,848 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:48,854 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 23:20:48,891 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:48,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:48,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:48,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:48,893 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:48,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:48,894 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:48,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:48,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:48,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:48,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:48,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:48,895 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:20:48,895 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:20:48,895 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:48,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:48,896 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:48,896 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:48,896 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:48,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:48,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:48,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:48,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:48,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:48,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:48,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:48,898 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:20:48,898 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:20:48,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:48,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:48,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:20:48,899 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-12-01 23:20:49,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:49,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:49,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:49,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:49,368 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:49,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-12-01 23:20:49,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c900e76b/90b7cd58b30448978815f9985a1ff78b/FLAG95a47abae [2020-12-01 23:20:50,105 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:50,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-12-01 23:20:50,128 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c900e76b/90b7cd58b30448978815f9985a1ff78b/FLAG95a47abae [2020-12-01 23:20:50,392 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c900e76b/90b7cd58b30448978815f9985a1ff78b [2020-12-01 23:20:50,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:50,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:50,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:50,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:50,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:50,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:50" (1/1) ... [2020-12-01 23:20:50,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce15acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50, skipping insertion in model container [2020-12-01 23:20:50,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:50" (1/1) ... [2020-12-01 23:20:50,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:50,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:50,759 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2020-12-01 23:20:50,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:50,778 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:50,854 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c[4166,4179] [2020-12-01 23:20:50,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:50,894 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:50,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50 WrapperNode [2020-12-01 23:20:50,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:50,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:50,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:50,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:50,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50" (1/1) ... [2020-12-01 23:20:50,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50" (1/1) ... [2020-12-01 23:20:51,011 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:51,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:51,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:51,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:51,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50" (1/1) ... [2020-12-01 23:20:51,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50" (1/1) ... [2020-12-01 23:20:51,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50" (1/1) ... [2020-12-01 23:20:51,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50" (1/1) ... [2020-12-01 23:20:51,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50" (1/1) ... [2020-12-01 23:20:51,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50" (1/1) ... [2020-12-01 23:20:51,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50" (1/1) ... [2020-12-01 23:20:51,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:51,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:51,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:51,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:51,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-01 23:20:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 23:20:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:20:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-12-01 23:20:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 23:20:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:51,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 23:20:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:56,997 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:56,997 INFO L298 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-01 23:20:56,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:56 BoogieIcfgContainer [2020-12-01 23:20:56,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:57,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:57,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:57,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:57,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:50" (1/3) ... [2020-12-01 23:20:57,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea6d5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:57, skipping insertion in model container [2020-12-01 23:20:57,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:50" (2/3) ... [2020-12-01 23:20:57,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ea6d5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:57, skipping insertion in model container [2020-12-01 23:20:57,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:56" (3/3) ... [2020-12-01 23:20:57,009 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-12-01 23:20:57,026 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:57,031 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:57,051 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:57,097 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:57,097 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:57,097 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:57,097 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:57,097 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:57,097 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:57,098 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:57,098 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:57,114 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-12-01 23:20:57,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 23:20:57,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:57,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:57,122 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:57,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:57,130 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-12-01 23:20:57,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:57,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344152328] [2020-12-01 23:20:57,145 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 [2020-12-01 23:20:58,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:58,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 23:20:58,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:20:58,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:58,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:20:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:58,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344152328] [2020-12-01 23:20:58,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:58,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 23:20:58,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708553125] [2020-12-01 23:20:58,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:58,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:20:58,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:58,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:58,321 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2020-12-01 23:20:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:58,350 INFO L93 Difference]: Finished difference Result 119 states and 208 transitions. [2020-12-01 23:20:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:58,352 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-01 23:20:58,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:58,363 INFO L225 Difference]: With dead ends: 119 [2020-12-01 23:20:58,363 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 23:20:58,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:58,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 23:20:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-12-01 23:20:58,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-01 23:20:58,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-12-01 23:20:58,411 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-12-01 23:20:58,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:58,412 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-12-01 23:20:58,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:58,412 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-12-01 23:20:58,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 23:20:58,413 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:58,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:58,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:20:58,628 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:58,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:58,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-12-01 23:20:58,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:58,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052562293] [2020-12-01 23:20:58,634 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 [2020-12-01 23:21:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:21:00,161 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:21:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:21:01,612 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:21:01,772 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 23:21:01,772 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:21:01,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:21:02,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:21:02 BoogieIcfgContainer [2020-12-01 23:21:02,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:21:02,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:21:02,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:21:02,027 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:21:02,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:56" (3/4) ... [2020-12-01 23:21:02,030 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:21:02,086 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:21:02,086 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:21:02,089 INFO L168 Benchmark]: Toolchain (without parser) took 11684.83 ms. Allocated memory was 41.9 MB in the beginning and 67.1 MB in the end (delta: 25.2 MB). Free memory was 18.9 MB in the beginning and 45.7 MB in the end (delta: -26.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:02,090 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory was 25.0 MB in the beginning and 24.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:21:02,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 490.83 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 18.7 MB in the beginning and 35.6 MB in the end (delta: -16.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:02,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.09 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 33.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:02,092 INFO L168 Benchmark]: Boogie Preprocessor took 106.13 ms. Allocated memory is still 54.5 MB. Free memory was 33.0 MB in the beginning and 30.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:02,093 INFO L168 Benchmark]: RCFGBuilder took 5876.83 ms. Allocated memory is still 54.5 MB. Free memory was 30.6 MB in the beginning and 25.3 MB in the end (delta: 5.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:02,094 INFO L168 Benchmark]: TraceAbstraction took 5024.70 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 24.8 MB in the beginning and 48.2 MB in the end (delta: -23.4 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:02,095 INFO L168 Benchmark]: Witness Printer took 59.56 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 45.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:02,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 41.9 MB. Free memory was 25.0 MB in the beginning and 24.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 490.83 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 18.7 MB in the beginning and 35.6 MB in the end (delta: -16.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 114.09 ms. Allocated memory is still 54.5 MB. Free memory was 35.6 MB in the beginning and 33.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 106.13 ms. Allocated memory is still 54.5 MB. Free memory was 33.0 MB in the beginning and 30.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5876.83 ms. Allocated memory is still 54.5 MB. Free memory was 30.6 MB in the beginning and 25.3 MB in the end (delta: 5.3 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5024.70 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 24.8 MB in the beginning and 48.2 MB in the end (delta: -23.4 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. * Witness Printer took 59.56 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 45.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 193]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1.0, Zero_fmod={2:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] reach_error() VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 2.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...