./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f 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 ../../../trunk/examples/svcomp/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_1.5.800.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 ../../../trunk/examples/svcomp/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 0.2.0-2880296 [2020-12-02 19:57:28,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 19:57:28,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 19:57:28,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 19:57:28,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 19:57:28,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 19:57:28,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 19:57:28,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 19:57:28,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 19:57:28,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 19:57:28,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 19:57:28,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 19:57:28,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 19:57:28,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 19:57:28,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 19:57:28,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 19:57:28,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 19:57:28,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 19:57:28,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 19:57:28,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 19:57:28,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 19:57:28,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 19:57:28,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 19:57:28,526 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 19:57:28,535 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 19:57:28,535 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 19:57:28,536 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 19:57:28,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 19:57:28,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 19:57:28,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 19:57:28,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 19:57:28,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 19:57:28,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 19:57:28,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 19:57:28,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 19:57:28,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 19:57:28,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 19:57:28,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 19:57:28,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 19:57:28,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 19:57:28,559 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 19:57:28,560 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 19:57:28,621 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 19:57:28,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 19:57:28,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 19:57:28,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 19:57:28,627 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 19:57:28,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 19:57:28,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 19:57:28,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 19:57:28,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 19:57:28,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 19:57:28,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 19:57:28,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 19:57:28,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 19:57:28,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 19:57:28,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 19:57:28,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 19:57:28,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 19:57:28,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 19:57:28,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 19:57:28,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 19:57:28,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 19:57:28,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 19:57:28,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 19:57:28,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 19:57:28,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 19:57:28,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 19:57:28,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 19:57:28,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 19:57:28,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 19:57:28,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f [2020-12-02 19:57:29,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 19:57:29,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 19:57:29,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 19:57:29,142 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 19:57:29,143 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 19:57:29,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-12-02 19:57:29,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2d5cc452/be881d9cd6ef409eb47ea041a50ea3ec/FLAGb38fb0611 [2020-12-02 19:57:29,871 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 19:57:29,871 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-12-02 19:57:29,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2d5cc452/be881d9cd6ef409eb47ea041a50ea3ec/FLAGb38fb0611 [2020-12-02 19:57:30,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2d5cc452/be881d9cd6ef409eb47ea041a50ea3ec [2020-12-02 19:57:30,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 19:57:30,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 19:57:30,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 19:57:30,219 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 19:57:30,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 19:57:30,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:57:30" (1/1) ... [2020-12-02 19:57:30,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4adf5486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30, skipping insertion in model container [2020-12-02 19:57:30,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:57:30" (1/1) ... [2020-12-02 19:57:30,238 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 19:57:30,262 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 19:57:30,455 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c[2355,2368] [2020-12-02 19:57:30,463 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 19:57:30,482 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 19:57:30,554 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c[2355,2368] [2020-12-02 19:57:30,556 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 19:57:30,591 INFO L217 MainTranslator]: Completed translation [2020-12-02 19:57:30,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30 WrapperNode [2020-12-02 19:57:30,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 19:57:30,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 19:57:30,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 19:57:30,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 19:57:30,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30" (1/1) ... [2020-12-02 19:57:30,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30" (1/1) ... [2020-12-02 19:57:30,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 19:57:30,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 19:57:30,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 19:57:30,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 19:57:30,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30" (1/1) ... [2020-12-02 19:57:30,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30" (1/1) ... [2020-12-02 19:57:30,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30" (1/1) ... [2020-12-02 19:57:30,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30" (1/1) ... [2020-12-02 19:57:30,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30" (1/1) ... [2020-12-02 19:57:30,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30" (1/1) ... [2020-12-02 19:57:30,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30" (1/1) ... [2020-12-02 19:57:30,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 19:57:30,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 19:57:30,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 19:57:30,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 19:57:30,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30" (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 [2020-12-02 19:57:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 19:57:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 19:57:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-02 19:57:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 19:57:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 19:57:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 19:57:30,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 19:57:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 19:57:30,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 19:57:31,333 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 19:57:31,333 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-02 19:57:31,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:57:31 BoogieIcfgContainer [2020-12-02 19:57:31,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 19:57:31,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 19:57:31,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 19:57:31,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 19:57:31,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:57:30" (1/3) ... [2020-12-02 19:57:31,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152c4780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:57:31, skipping insertion in model container [2020-12-02 19:57:31,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:30" (2/3) ... [2020-12-02 19:57:31,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@152c4780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:57:31, skipping insertion in model container [2020-12-02 19:57:31,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:57:31" (3/3) ... [2020-12-02 19:57:31,354 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-12-02 19:57:31,368 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 19:57:31,371 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 19:57:31,383 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 19:57:31,410 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 19:57:31,411 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 19:57:31,411 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 19:57:31,411 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 19:57:31,411 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 19:57:31,411 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 19:57:31,411 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 19:57:31,412 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 19:57:31,427 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-02 19:57:31,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 19:57:31,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 19:57:31,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 19:57:31,434 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 19:57:31,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 19:57:31,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-12-02 19:57:31,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 19:57:31,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182669246] [2020-12-02 19:57:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 19:57:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 19:57:31,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 19:57:31,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182669246] [2020-12-02 19:57:31,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 19:57:31,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 19:57:31,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176628788] [2020-12-02 19:57:31,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 19:57:31,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 19:57:31,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 19:57:31,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 19:57:31,712 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-02 19:57:31,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 19:57:31,740 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2020-12-02 19:57:31,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 19:57:31,742 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-02 19:57:31,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 19:57:31,773 INFO L225 Difference]: With dead ends: 56 [2020-12-02 19:57:31,775 INFO L226 Difference]: Without dead ends: 26 [2020-12-02 19:57:31,778 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 [2020-12-02 19:57:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-02 19:57:31,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-02 19:57:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-02 19:57:31,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-12-02 19:57:31,823 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-12-02 19:57:31,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 19:57:31,824 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-12-02 19:57:31,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 19:57:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-12-02 19:57:31,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 19:57:31,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 19:57:31,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 19:57:31,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 19:57:31,827 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 19:57:31,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 19:57:31,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-12-02 19:57:31,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 19:57:31,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30388159] [2020-12-02 19:57:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 19:57:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 19:57:32,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 19:57:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 19:57:32,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 19:57:32,173 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 19:57:32,173 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 19:57:32,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 19:57:32,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:57:32 BoogieIcfgContainer [2020-12-02 19:57:32,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 19:57:32,208 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 19:57:32,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 19:57:32,209 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 19:57:32,209 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:57:31" (3/4) ... [2020-12-02 19:57:32,213 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 19:57:32,213 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 19:57:32,216 INFO L168 Benchmark]: Toolchain (without parser) took 1998.05 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 18.2 MB in the beginning and 31.3 MB in the end (delta: -13.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. [2020-12-02 19:57:32,217 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 41.9 MB. Free memory is still 23.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 19:57:32,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.19 ms. Allocated memory is still 41.9 MB. Free memory was 18.1 MB in the beginning and 18.5 MB in the end (delta: -466.2 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-12-02 19:57:32,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.83 ms. Allocated memory is still 41.9 MB. Free memory was 18.5 MB in the beginning and 16.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 19:57:32,220 INFO L168 Benchmark]: Boogie Preprocessor took 35.14 ms. Allocated memory is still 41.9 MB. Free memory was 16.5 MB in the beginning and 15.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 19:57:32,221 INFO L168 Benchmark]: RCFGBuilder took 640.54 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 15.0 MB in the beginning and 31.8 MB in the end (delta: -16.8 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-12-02 19:57:32,222 INFO L168 Benchmark]: TraceAbstraction took 866.66 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 31.6 MB in the end (delta: -158.8 kB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-12-02 19:57:32,223 INFO L168 Benchmark]: Witness Printer took 5.61 ms. Allocated memory is still 54.5 MB. Free memory was 31.6 MB in the beginning and 31.3 MB in the end (delta: 307.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 19:57:32,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 41.9 MB. Free memory is still 23.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 373.19 ms. Allocated memory is still 41.9 MB. Free memory was 18.1 MB in the beginning and 18.5 MB in the end (delta: -466.2 kB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.83 ms. Allocated memory is still 41.9 MB. Free memory was 18.5 MB in the beginning and 16.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.14 ms. Allocated memory is still 41.9 MB. Free memory was 16.5 MB in the beginning and 15.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 640.54 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 15.0 MB in the beginning and 31.8 MB in the end (delta: -16.8 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 866.66 ms. Allocated memory is still 54.5 MB. Free memory was 31.5 MB in the beginning and 31.6 MB in the end (delta: -158.8 kB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.61 ms. Allocated memory is still 54.5 MB. Free memory was 31.6 MB in the beginning and 31.3 MB in the end (delta: 307.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 33, overapproximation of bitwiseOr at line 75, overapproximation of bitwiseAnd at line 74, overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 88. 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) [L93] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, 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=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 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 0.2.0-2880296 [2020-12-02 19:57:34,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 19:57:34,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 19:57:34,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 19:57:34,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 19:57:34,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 19:57:34,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 19:57:34,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 19:57:34,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 19:57:34,818 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 19:57:34,819 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 19:57:34,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 19:57:34,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 19:57:34,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 19:57:34,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 19:57:34,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 19:57:34,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 19:57:34,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 19:57:34,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 19:57:34,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 19:57:34,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 19:57:34,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 19:57:34,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 19:57:34,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 19:57:34,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 19:57:34,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 19:57:34,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 19:57:34,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 19:57:34,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 19:57:34,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 19:57:34,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 19:57:34,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 19:57:34,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 19:57:34,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 19:57:34,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 19:57:34,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 19:57:34,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 19:57:34,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 19:57:34,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 19:57:34,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 19:57:34,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 19:57:34,881 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 19:57:34,936 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 19:57:34,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 19:57:34,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 19:57:34,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 19:57:34,938 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 19:57:34,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 19:57:34,938 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 19:57:34,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 19:57:34,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 19:57:34,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 19:57:34,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 19:57:34,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 19:57:34,940 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 19:57:34,940 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 19:57:34,940 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 19:57:34,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 19:57:34,940 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 19:57:34,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 19:57:34,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 19:57:34,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 19:57:34,941 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 19:57:34,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 19:57:34,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 19:57:34,942 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 19:57:34,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 19:57:34,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 19:57:34,943 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 19:57:34,943 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 19:57:34,943 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 19:57:34,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 19:57:34,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 19:57:34,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f [2020-12-02 19:57:35,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 19:57:35,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 19:57:35,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 19:57:35,377 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 19:57:35,378 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 19:57:35,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-12-02 19:57:35,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52f84fe7d/23f296c8c7444735b068064d41de56f0/FLAG4b3980ce9 [2020-12-02 19:57:36,096 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 19:57:36,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-12-02 19:57:36,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52f84fe7d/23f296c8c7444735b068064d41de56f0/FLAG4b3980ce9 [2020-12-02 19:57:36,424 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52f84fe7d/23f296c8c7444735b068064d41de56f0 [2020-12-02 19:57:36,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 19:57:36,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 19:57:36,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 19:57:36,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 19:57:36,443 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 19:57:36,444 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:57:36" (1/1) ... [2020-12-02 19:57:36,447 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ae4ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36, skipping insertion in model container [2020-12-02 19:57:36,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:57:36" (1/1) ... [2020-12-02 19:57:36,456 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 19:57:36,483 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 19:57:36,658 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c[2355,2368] [2020-12-02 19:57:36,662 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 19:57:36,678 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 19:57:36,731 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c[2355,2368] [2020-12-02 19:57:36,734 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 19:57:36,763 INFO L217 MainTranslator]: Completed translation [2020-12-02 19:57:36,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36 WrapperNode [2020-12-02 19:57:36,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 19:57:36,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 19:57:36,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 19:57:36,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 19:57:36,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36" (1/1) ... [2020-12-02 19:57:36,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36" (1/1) ... [2020-12-02 19:57:36,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 19:57:36,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 19:57:36,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 19:57:36,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 19:57:36,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36" (1/1) ... [2020-12-02 19:57:36,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36" (1/1) ... [2020-12-02 19:57:36,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36" (1/1) ... [2020-12-02 19:57:36,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36" (1/1) ... [2020-12-02 19:57:36,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36" (1/1) ... [2020-12-02 19:57:36,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36" (1/1) ... [2020-12-02 19:57:36,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36" (1/1) ... [2020-12-02 19:57:36,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 19:57:36,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 19:57:36,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 19:57:36,891 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 19:57:36,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36" (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 [2020-12-02 19:57:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 19:57:37,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-02 19:57:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-02 19:57:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 19:57:37,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 19:57:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 19:57:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 19:57:37,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 19:57:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-02 19:57:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 19:57:37,919 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 19:57:37,919 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-02 19:57:37,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:57:37 BoogieIcfgContainer [2020-12-02 19:57:37,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 19:57:37,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 19:57:37,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 19:57:37,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 19:57:37,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:57:36" (1/3) ... [2020-12-02 19:57:37,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8c30cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:57:37, skipping insertion in model container [2020-12-02 19:57:37,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:57:36" (2/3) ... [2020-12-02 19:57:37,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a8c30cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:57:37, skipping insertion in model container [2020-12-02 19:57:37,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:57:37" (3/3) ... [2020-12-02 19:57:37,942 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-12-02 19:57:37,972 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 19:57:37,977 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 19:57:37,992 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 19:57:38,024 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 19:57:38,025 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 19:57:38,025 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 19:57:38,025 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 19:57:38,025 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 19:57:38,025 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 19:57:38,025 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 19:57:38,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 19:57:38,042 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-02 19:57:38,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 19:57:38,049 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 19:57:38,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 19:57:38,051 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 19:57:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 19:57:38,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-12-02 19:57:38,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 19:57:38,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654670706] [2020-12-02 19:57:38,075 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 [2020-12-02 19:57:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 19:57:39,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 19:57:39,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 19:57:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 19:57:39,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 19:57:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 19:57:39,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654670706] [2020-12-02 19:57:39,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 19:57:39,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 19:57:39,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071469494] [2020-12-02 19:57:39,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 19:57:39,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 19:57:39,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 19:57:39,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 19:57:39,172 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-02 19:57:39,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 19:57:39,194 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2020-12-02 19:57:39,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 19:57:39,196 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-02 19:57:39,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 19:57:39,208 INFO L225 Difference]: With dead ends: 56 [2020-12-02 19:57:39,209 INFO L226 Difference]: Without dead ends: 26 [2020-12-02 19:57:39,212 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 [2020-12-02 19:57:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-02 19:57:39,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-02 19:57:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-02 19:57:39,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-12-02 19:57:39,259 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-12-02 19:57:39,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 19:57:39,259 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-12-02 19:57:39,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 19:57:39,260 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-12-02 19:57:39,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 19:57:39,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 19:57:39,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 19:57:39,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 19:57:39,475 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 19:57:39,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 19:57:39,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-12-02 19:57:39,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 19:57:39,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24420460] [2020-12-02 19:57:39,480 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 [2020-12-02 19:57:40,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 19:57:40,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-02 19:57:40,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 19:57:46,364 WARN L197 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-02 19:57:57,635 WARN L197 SmtUtils]: Spent 1.82 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-02 19:58:14,589 WARN L197 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-02 19:58:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 19:58:14,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 19:58:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 19:58:33,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24420460] [2020-12-02 19:58:33,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 19:58:33,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-02 19:58:33,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911998091] [2020-12-02 19:58:33,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 19:58:33,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 19:58:33,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 19:58:33,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=43, Unknown=11, NotChecked=0, Total=72 [2020-12-02 19:58:33,788 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 9 states. [2020-12-02 19:58:36,020 WARN L838 $PredicateComparison]: unable to prove that (and (= roundNearestTiesToEven c_~CRM) (exists ((|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|)))) (and (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) c_ULTIMATE.start_round_double_~x) ((_ extract 62 52) c_ULTIMATE.start_round_double_~x) ((_ extract 51 0) c_ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= (_ +zero 11 53) .cse1))))) is different from false [2020-12-02 19:58:41,732 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|)))) (and (= (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) ULTIMATE.start_round_double_~x)) (_ bv20 32)) (_ bv4294966273 32)) c_ULTIMATE.start_round_double_~exponent_less_1023~0) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= (_ +zero 11 53) .cse1)))) (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|)))) (and (= ((_ extract 63 32) ULTIMATE.start_round_double_~x) c_ULTIMATE.start_round_double_~msw~0) (= (fp.div roundNearestTiesToEven .cse2 .cse3) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= (_ +zero 11 53) .cse3))))) is different from false [2020-12-02 19:58:56,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 19:58:56,848 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-12-02 19:58:57,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 19:58:57,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-02 19:58:57,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 19:58:57,047 INFO L225 Difference]: With dead ends: 53 [2020-12-02 19:58:57,047 INFO L226 Difference]: Without dead ends: 38 [2020-12-02 19:58:57,048 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 58.0s TimeCoverageRelationStatistics Valid=22, Invalid=45, Unknown=13, NotChecked=30, Total=110 [2020-12-02 19:58:57,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-02 19:58:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 22. [2020-12-02 19:58:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-02 19:58:57,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-12-02 19:58:57,060 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 15 [2020-12-02 19:58:57,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 19:58:57,062 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-12-02 19:58:57,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 19:58:57,062 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-12-02 19:58:57,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 19:58:57,064 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 19:58:57,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 19:58:57,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 19:58:57,266 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 19:58:57,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 19:58:57,267 INFO L82 PathProgramCache]: Analyzing trace with hash 256590961, now seen corresponding path program 1 times [2020-12-02 19:58:57,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 19:58:57,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753694075] [2020-12-02 19:58:57,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 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 [2020-12-02 19:58:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 19:58:58,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-02 19:58:58,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 19:59:00,304 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~nondet18_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_8|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_8|)))) (and (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) c_ULTIMATE.start_round_double_~x) ((_ extract 62 52) c_ULTIMATE.start_round_double_~x) ((_ extract 51 0) c_ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= .cse1 (_ +zero 11 53))))) is different from false [2020-12-02 19:59:02,510 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_8|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_8|)))) (and (= ((_ extract 63 32) ULTIMATE.start_round_double_~x) c_ULTIMATE.start_round_double_~msw~0) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= .cse1 (_ +zero 11 53))))) is different from false [2020-12-02 19:59:04,663 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_8|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_8|)))) (and (= (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) ULTIMATE.start_round_double_~x)) (_ bv20 32)) (_ bv4294966273 32)) c_ULTIMATE.start_round_double_~exponent_less_1023~0) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= .cse1 (_ +zero 11 53))))) is different from false [2020-12-02 19:59:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 19:59:04,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 19:59:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 19:59:06,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753694075] [2020-12-02 19:59:06,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 19:59:06,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-02 19:59:06,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866061802] [2020-12-02 19:59:06,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 19:59:06,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 19:59:06,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 19:59:06,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=24, Unknown=3, NotChecked=30, Total=72 [2020-12-02 19:59:06,686 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 9 states. [2020-12-02 19:59:24,327 WARN L197 SmtUtils]: Spent 11.30 s on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2020-12-02 19:59:27,927 WARN L838 $PredicateComparison]: unable to prove that (and (bvsgt (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) c_ULTIMATE.start_round_double_~x)) (_ bv20 32)) (_ bv4294966273 32)) (_ bv51 32)) (= roundNearestTiesToEven c_~CRM) (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_8|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_8|)))) (and (= ((_ extract 63 32) ULTIMATE.start_round_double_~x) c_ULTIMATE.start_round_double_~msw~0) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= .cse1 (_ +zero 11 53))))) (bvsgt (bvadd (bvashr (bvand (_ bv2146435072 32) c_ULTIMATE.start_round_double_~msw~0) (_ bv20 32)) (_ bv4294966273 32)) (_ bv51 32))) is different from false [2020-12-02 19:59:30,074 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_8|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_8|)))) (and (= ((_ extract 63 32) ULTIMATE.start_round_double_~x) c_ULTIMATE.start_round_double_~msw~0) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= .cse1 (_ +zero 11 53))))) (bvsgt (bvadd (bvashr (bvand (_ bv2146435072 32) c_ULTIMATE.start_round_double_~msw~0) (_ bv20 32)) (_ bv4294966273 32)) (_ bv51 32))) is different from false [2020-12-02 19:59:32,231 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_8| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_8| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_8|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_8|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_8|)))) (and (= (bvadd (bvashr (bvand (_ bv2146435072 32) ((_ extract 63 32) ULTIMATE.start_round_double_~x)) (_ bv20 32)) (_ bv4294966273 32)) c_ULTIMATE.start_round_double_~exponent_less_1023~0) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= .cse1 (_ +zero 11 53))))) (bvsgt c_ULTIMATE.start_round_double_~exponent_less_1023~0 (_ bv51 32))) is different from false [2020-12-02 19:59:32,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 19:59:32,524 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2020-12-02 19:59:32,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 19:59:32,528 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-02 19:59:32,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 19:59:32,529 INFO L225 Difference]: With dead ends: 38 [2020-12-02 19:59:32,529 INFO L226 Difference]: Without dead ends: 24 [2020-12-02 19:59:32,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7s TimeCoverageRelationStatistics Valid=25, Invalid=33, Unknown=8, NotChecked=90, Total=156 [2020-12-02 19:59:32,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-02 19:59:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16. [2020-12-02 19:59:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-02 19:59:32,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-02 19:59:32,534 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 15 [2020-12-02 19:59:32,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 19:59:32,535 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-02 19:59:32,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 19:59:32,535 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-02 19:59:32,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 19:59:32,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 19:59:32,536 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 19:59:32,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 19:59:32,737 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 19:59:32,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 19:59:32,739 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2020-12-02 19:59:32,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 19:59:32,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779486306] [2020-12-02 19:59:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-02 19:59:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 19:59:33,971 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 19:59:35,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 19:59:35,030 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 19:59:35,155 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 19:59:35,155 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 19:59:35,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-02 19:59:35,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:59:35 BoogieIcfgContainer [2020-12-02 19:59:35,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 19:59:35,427 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 19:59:35,427 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 19:59:35,427 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 19:59:35,428 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:57:37" (3/4) ... [2020-12-02 19:59:35,430 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 19:59:35,535 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 19:59:35,536 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 19:59:35,539 INFO L168 Benchmark]: Toolchain (without parser) took 119106.87 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 18.3 MB in the beginning and 29.5 MB in the end (delta: -11.1 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-12-02 19:59:35,540 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 41.9 MB. Free memory was 26.5 MB in the beginning and 26.4 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 19:59:35,541 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.09 ms. Allocated memory is still 41.9 MB. Free memory was 18.1 MB in the beginning and 17.5 MB in the end (delta: 541.6 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-02 19:59:35,545 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.43 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.5 MB in the beginning and 33.7 MB in the end (delta: -16.1 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-12-02 19:59:35,546 INFO L168 Benchmark]: Boogie Preprocessor took 57.43 ms. Allocated memory is still 50.3 MB. Free memory was 33.7 MB in the beginning and 32.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 19:59:35,547 INFO L168 Benchmark]: RCFGBuilder took 1035.86 ms. Allocated memory is still 50.3 MB. Free memory was 31.8 MB in the beginning and 22.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-12-02 19:59:35,548 INFO L168 Benchmark]: TraceAbstraction took 117498.63 ms. Allocated memory is still 50.3 MB. Free memory was 22.3 MB in the beginning and 31.9 MB in the end (delta: -9.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2020-12-02 19:59:35,549 INFO L168 Benchmark]: Witness Printer took 108.80 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 29.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 19:59:35,560 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 41.9 MB. Free memory was 26.5 MB in the beginning and 26.4 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.09 ms. Allocated memory is still 41.9 MB. Free memory was 18.1 MB in the beginning and 17.5 MB in the end (delta: 541.6 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.43 ms. Allocated memory was 41.9 MB in the beginning and 50.3 MB in the end (delta: 8.4 MB). Free memory was 17.5 MB in the beginning and 33.7 MB in the end (delta: -16.1 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.43 ms. Allocated memory is still 50.3 MB. Free memory was 33.7 MB in the beginning and 32.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1035.86 ms. Allocated memory is still 50.3 MB. Free memory was 31.8 MB in the beginning and 22.7 MB in the end (delta: 9.1 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 117498.63 ms. Allocated memory is still 50.3 MB. Free memory was 22.3 MB in the beginning and 31.9 MB in the end (delta: -9.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Witness Printer took 108.80 ms. Allocated memory is still 50.3 MB. Free memory was 31.6 MB in the beginning and 29.5 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: 93]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L88] EXPR 1.0 [L88] EXPR 0.0 [L88] EXPR 1.0 / 0.0 [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] EXPR x + x [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) [L93] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 117.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 49.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 35 SDslu, 170 SDs, 0 SdLazy, 72 SolverSat, 3 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 17.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 90.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.5s SatisfiabilityAnalysisTime, 62.1s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 9 QuantifiedInterpolants, 8282 SizeOfPredicates, 12 NumberOfNonLiveVariables, 163 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...