./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.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_1300.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 6775086e1d92d324fce714cac739cb50ade22067 ........................................................................................................................................................................................................................................................................................................................................ 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_1300.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 6775086e1d92d324fce714cac739cb50ade22067 ............................................................................................................................................................................................................................................................................................................................................................. 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 15:35:33,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:35:33,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:35:33,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:35:33,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:35:33,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:35:33,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:35:33,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:35:33,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:35:33,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:35:33,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:35:33,432 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:35:33,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:35:33,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:35:33,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:35:33,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:35:33,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:35:33,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:35:33,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:35:33,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:35:33,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:35:33,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:35:33,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:35:33,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:35:33,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:35:33,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:35:33,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:35:33,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:35:33,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:35:33,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:35:33,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:35:33,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:35:33,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:35:33,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:35:33,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:35:33,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:35:33,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:35:33,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:35:33,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:35:33,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:35:33,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:35:33,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 15:35:33,542 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:35:33,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:35:33,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:35:33,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:35:33,547 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:35:33,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:35:33,547 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:35:33,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 15:35:33,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:35:33,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:35:33,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:35:33,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:35:33,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:35:33,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:35:33,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:35:33,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:35:33,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:35:33,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:35:33,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:35:33,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:35:33,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:35:33,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:35:33,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:35:33,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:35:33,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:35:33,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 15:35:33,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 15:35:33,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:35:33,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:35:33,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-12-02 15:35:34,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:35:34,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:35:34,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:35:34,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:35:34,099 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:35:34,100 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-12-02 15:35:34,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64fd2d28a/eaa933121b214b57849cc0a4e19521d0/FLAG9477e16a8 [2020-12-02 15:35:34,784 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:35:34,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-12-02 15:35:34,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64fd2d28a/eaa933121b214b57849cc0a4e19521d0/FLAG9477e16a8 [2020-12-02 15:35:35,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64fd2d28a/eaa933121b214b57849cc0a4e19521d0 [2020-12-02 15:35:35,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:35:35,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:35:35,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:35:35,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:35:35,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:35:35,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:35:35" (1/1) ... [2020-12-02 15:35:35,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427581c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35, skipping insertion in model container [2020-12-02 15:35:35,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:35:35" (1/1) ... [2020-12-02 15:35:35,160 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:35:35,197 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:35:35,379 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_1300.c[1563,1576] [2020-12-02 15:35:35,385 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:35:35,401 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:35:35,443 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_1300.c[1563,1576] [2020-12-02 15:35:35,444 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:35:35,463 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:35:35,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35 WrapperNode [2020-12-02 15:35:35,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:35:35,465 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:35:35,465 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:35:35,465 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:35:35,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35" (1/1) ... [2020-12-02 15:35:35,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35" (1/1) ... [2020-12-02 15:35:35,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:35:35,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:35:35,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:35:35,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:35:35,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35" (1/1) ... [2020-12-02 15:35:35,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35" (1/1) ... [2020-12-02 15:35:35,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35" (1/1) ... [2020-12-02 15:35:35,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35" (1/1) ... [2020-12-02 15:35:35,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35" (1/1) ... [2020-12-02 15:35:35,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35" (1/1) ... [2020-12-02 15:35:35,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35" (1/1) ... [2020-12-02 15:35:35,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:35:35,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:35:35,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:35:35,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:35:35,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35" (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 15:35:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 15:35:35,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:35:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 15:35:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:35:35,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:35:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 15:35:35,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:35:36,004 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:35:36,005 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-02 15:35:36,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:36 BoogieIcfgContainer [2020-12-02 15:35:36,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:35:36,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:35:36,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:35:36,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:35:36,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:35:35" (1/3) ... [2020-12-02 15:35:36,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1125a5e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:35:36, skipping insertion in model container [2020-12-02 15:35:36,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:35" (2/3) ... [2020-12-02 15:35:36,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1125a5e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:35:36, skipping insertion in model container [2020-12-02 15:35:36,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:36" (3/3) ... [2020-12-02 15:35:36,031 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-12-02 15:35:36,079 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:35:36,089 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:35:36,118 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:35:36,165 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:35:36,165 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:35:36,165 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:35:36,165 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:35:36,166 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:35:36,166 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:35:36,166 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:35:36,166 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:35:36,187 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-02 15:35:36,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 15:35:36,196 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:36,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:36,197 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:36,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:36,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-12-02 15:35:36,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:35:36,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594004209] [2020-12-02 15:35:36,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:35:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:36,448 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 15:35:36,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594004209] [2020-12-02 15:35:36,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:36,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 15:35:36,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647728580] [2020-12-02 15:35:36,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:35:36,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:35:36,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:35:36,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:35:36,490 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-02 15:35:36,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:36,510 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2020-12-02 15:35:36,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:35:36,512 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-02 15:35:36,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:36,522 INFO L225 Difference]: With dead ends: 38 [2020-12-02 15:35:36,523 INFO L226 Difference]: Without dead ends: 16 [2020-12-02 15:35:36,526 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 15:35:36,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-02 15:35:36,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-02 15:35:36,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-02 15:35:36,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-02 15:35:36,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-12-02 15:35:36,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:36,560 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-02 15:35:36,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:35:36,560 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-02 15:35:36,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 15:35:36,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:36,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:36,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 15:35:36,562 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:36,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:36,563 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-12-02 15:35:36,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:35:36,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650187635] [2020-12-02 15:35:36,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:35:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:36,680 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 15:35:36,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650187635] [2020-12-02 15:35:36,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:36,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 15:35:36,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925173843] [2020-12-02 15:35:36,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 15:35:36,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:35:36,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 15:35:36,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 15:35:36,686 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-12-02 15:35:36,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:36,708 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-12-02 15:35:36,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 15:35:36,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-02 15:35:36,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:36,711 INFO L225 Difference]: With dead ends: 24 [2020-12-02 15:35:36,711 INFO L226 Difference]: Without dead ends: 16 [2020-12-02 15:35:36,713 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 15:35:36,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-02 15:35:36,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-02 15:35:36,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-02 15:35:36,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-12-02 15:35:36,718 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-12-02 15:35:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:36,718 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-12-02 15:35:36,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 15:35:36,719 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-12-02 15:35:36,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 15:35:36,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:36,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:36,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 15:35:36,721 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:36,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:36,722 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-12-02 15:35:36,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:35:36,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852099583] [2020-12-02 15:35:36,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:35:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:35:36,847 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:35:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:35:36,943 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:35:37,008 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 15:35:37,009 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:35:37,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 15:35:37,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:35:37 BoogieIcfgContainer [2020-12-02 15:35:37,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:35:37,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:35:37,051 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:35:37,052 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:35:37,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:36" (3/4) ... [2020-12-02 15:35:37,056 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 15:35:37,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:35:37,060 INFO L168 Benchmark]: Toolchain (without parser) took 1952.25 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.2 MB in the beginning and 26.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:37,061 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 44.0 MB. Free memory was 26.8 MB in the beginning and 26.7 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:35:37,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.98 ms. Allocated memory is still 44.0 MB. Free memory was 20.9 MB in the beginning and 19.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:37,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.87 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.9 MB in the beginning and 38.5 MB in the end (delta: -18.6 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:37,064 INFO L168 Benchmark]: Boogie Preprocessor took 34.11 ms. Allocated memory is still 54.5 MB. Free memory was 38.5 MB in the beginning and 37.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:37,065 INFO L168 Benchmark]: RCFGBuilder took 447.62 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 33.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:37,066 INFO L168 Benchmark]: TraceAbstraction took 1038.39 ms. Allocated memory is still 54.5 MB. Free memory was 33.2 MB in the beginning and 27.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:37,067 INFO L168 Benchmark]: Witness Printer took 5.79 ms. Allocated memory is still 54.5 MB. Free memory was 27.2 MB in the beginning and 26.9 MB in the end (delta: 313.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:35:37,072 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 44.0 MB. Free memory was 26.8 MB in the beginning and 26.7 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.98 ms. Allocated memory is still 44.0 MB. Free memory was 20.9 MB in the beginning and 19.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 61.87 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 19.9 MB in the beginning and 38.5 MB in the end (delta: -18.6 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.11 ms. Allocated memory is still 54.5 MB. Free memory was 38.5 MB in the beginning and 37.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 447.62 ms. Allocated memory is still 54.5 MB. Free memory was 37.2 MB in the beginning and 33.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1038.39 ms. Allocated memory is still 54.5 MB. Free memory was 33.2 MB in the beginning and 27.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Witness Printer took 5.79 ms. Allocated memory is still 54.5 MB. Free memory was 27.2 MB in the beginning and 26.9 MB in the end (delta: 313.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 27, overapproximation of bitwiseAnd at line 42, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 60, overapproximation of to_real at line 57. Possible FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate 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 15:35:39,879 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-12-02 15:35:39,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:35:39,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:35:39,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:35:39,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:35:39,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:35:39,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:35:39,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:35:39,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:35:39,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:35:39,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:35:39,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:35:39,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 15:35:40,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:35:40,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:35:40,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:35:40,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:35:40,006 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:35:40,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:35:40,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:35:40,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:35:40,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:35:40,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:35:40,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:35:40,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:35:40,009 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 15:35:40,009 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 15:35:40,009 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:35:40,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:35:40,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:35:40,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:35:40,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:35:40,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:35:40,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:35:40,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:35:40,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:35:40,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:35:40,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:35:40,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:35:40,013 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 15:35:40,013 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 15:35:40,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:35:40,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:35:40,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 15:35:40,014 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-12-02 15:35:40,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:35:40,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:35:40,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:35:40,499 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:35:40,500 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:35:40,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-12-02 15:35:40,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0230e2c62/86e51182e24d407299156b2debe83e54/FLAG065f2fe4a [2020-12-02 15:35:41,336 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:35:41,337 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-12-02 15:35:41,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0230e2c62/86e51182e24d407299156b2debe83e54/FLAG065f2fe4a [2020-12-02 15:35:41,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0230e2c62/86e51182e24d407299156b2debe83e54 [2020-12-02 15:35:41,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:35:41,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:35:41,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:35:41,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:35:41,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:35:41,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:35:41" (1/1) ... [2020-12-02 15:35:41,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed5dd5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:41, skipping insertion in model container [2020-12-02 15:35:41,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:35:41" (1/1) ... [2020-12-02 15:35:41,677 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:35:41,703 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:35:41,950 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_1300.c[1563,1576] [2020-12-02 15:35:41,959 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:35:41,983 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:35:42,047 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_1300.c[1563,1576] [2020-12-02 15:35:42,049 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:35:42,087 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:35:42,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:42 WrapperNode [2020-12-02 15:35:42,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:35:42,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:35:42,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:35:42,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:35:42,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:42" (1/1) ... [2020-12-02 15:35:42,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:42" (1/1) ... [2020-12-02 15:35:42,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:35:42,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:35:42,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:35:42,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:35:42,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:42" (1/1) ... [2020-12-02 15:35:42,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:42" (1/1) ... [2020-12-02 15:35:42,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:42" (1/1) ... [2020-12-02 15:35:42,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:42" (1/1) ... [2020-12-02 15:35:42,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:42" (1/1) ... [2020-12-02 15:35:42,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:42" (1/1) ... [2020-12-02 15:35:42,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:42" (1/1) ... [2020-12-02 15:35:42,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:35:42,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:35:42,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:35:42,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:35:42,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:42" (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 15:35:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 15:35:42,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-02 15:35:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 15:35:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:35:42,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 15:35:42,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:35:42,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:35:42,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:35:43,473 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:35:43,474 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-02 15:35:43,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:43 BoogieIcfgContainer [2020-12-02 15:35:43,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:35:43,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:35:43,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:35:43,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:35:43,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:35:41" (1/3) ... [2020-12-02 15:35:43,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c6c982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:35:43, skipping insertion in model container [2020-12-02 15:35:43,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:35:42" (2/3) ... [2020-12-02 15:35:43,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c6c982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:35:43, skipping insertion in model container [2020-12-02 15:35:43,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:43" (3/3) ... [2020-12-02 15:35:43,487 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-12-02 15:35:43,504 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:35:43,508 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:35:43,521 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:35:43,548 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:35:43,549 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:35:43,549 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:35:43,549 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:35:43,549 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:35:43,550 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:35:43,550 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:35:43,550 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:35:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-02 15:35:43,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 15:35:43,570 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:43,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:43,572 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:43,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:43,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-12-02 15:35:43,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:35:43,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563482043] [2020-12-02 15:35:43,600 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 15:35:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:43,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 15:35:43,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:35:43,829 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 15:35:43,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:35:43,856 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 15:35:43,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563482043] [2020-12-02 15:35:43,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:43,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 15:35:43,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732037579] [2020-12-02 15:35:43,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:35:43,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:35:43,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:35:43,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:35:43,893 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-02 15:35:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:43,912 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2020-12-02 15:35:43,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:35:43,913 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-02 15:35:43,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:43,923 INFO L225 Difference]: With dead ends: 38 [2020-12-02 15:35:43,923 INFO L226 Difference]: Without dead ends: 16 [2020-12-02 15:35:43,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 15:35:43,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-02 15:35:43,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-02 15:35:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-02 15:35:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-02 15:35:43,971 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-12-02 15:35:43,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:43,972 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-02 15:35:43,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:35:43,972 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-02 15:35:43,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 15:35:43,973 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:43,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:44,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 15:35:44,188 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:44,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:44,190 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-12-02 15:35:44,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:35:44,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355128953] [2020-12-02 15:35:44,192 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 15:35:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:35:44,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-02 15:35:44,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:35:44,368 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 15:35:44,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:35:44,385 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 15:35:44,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355128953] [2020-12-02 15:35:44,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:35:44,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-12-02 15:35:44,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050164129] [2020-12-02 15:35:44,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-02 15:35:44,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:35:44,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-02 15:35:44,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 15:35:44,391 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-12-02 15:35:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:35:44,413 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-12-02 15:35:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 15:35:44,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-12-02 15:35:44,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:35:44,415 INFO L225 Difference]: With dead ends: 24 [2020-12-02 15:35:44,415 INFO L226 Difference]: Without dead ends: 16 [2020-12-02 15:35:44,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-02 15:35:44,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-02 15:35:44,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-02 15:35:44,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-02 15:35:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-12-02 15:35:44,422 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-12-02 15:35:44,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:35:44,422 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-12-02 15:35:44,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-02 15:35:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-12-02 15:35:44,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 15:35:44,423 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:35:44,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:35:44,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 15:35:44,641 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:35:44,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:35:44,643 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-12-02 15:35:44,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:35:44,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537969539] [2020-12-02 15:35:44,645 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 15:35:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:35:44,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:35:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:35:44,914 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:35:44,965 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 15:35:44,965 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:35:45,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 15:35:45,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:35:45 BoogieIcfgContainer [2020-12-02 15:35:45,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:35:45,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:35:45,207 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:35:45,207 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:35:45,208 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:35:43" (3/4) ... [2020-12-02 15:35:45,211 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 15:35:45,264 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 15:35:45,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:35:45,268 INFO L168 Benchmark]: Toolchain (without parser) took 3619.84 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 35.6 MB in the beginning and 40.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:45,269 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 41.9 MB. Free memory was 19.9 MB in the beginning and 19.9 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:35:45,270 INFO L168 Benchmark]: CACSL2BoogieTranslator took 439.82 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 37.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:45,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.12 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 35.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:35:45,271 INFO L168 Benchmark]: Boogie Preprocessor took 94.21 ms. Allocated memory is still 58.7 MB. Free memory was 35.8 MB in the beginning and 34.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:45,272 INFO L168 Benchmark]: RCFGBuilder took 1188.43 ms. Allocated memory is still 58.7 MB. Free memory was 34.2 MB in the beginning and 31.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:45,273 INFO L168 Benchmark]: TraceAbstraction took 1728.47 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.7 MB in the beginning and 43.4 MB in the end (delta: -12.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:35:45,274 INFO L168 Benchmark]: Witness Printer took 57.97 ms. Allocated memory is still 71.3 MB. Free memory was 43.3 MB in the beginning and 40.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 15:35:45,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 41.9 MB. Free memory was 19.9 MB in the beginning and 19.9 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 439.82 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 37.5 MB in the end (delta: -2.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.12 ms. Allocated memory is still 58.7 MB. Free memory was 37.5 MB in the beginning and 35.8 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 94.21 ms. Allocated memory is still 58.7 MB. Free memory was 35.8 MB in the beginning and 34.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1188.43 ms. Allocated memory is still 58.7 MB. Free memory was 34.2 MB in the beginning and 31.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1728.47 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.7 MB in the beginning and 43.4 MB in the end (delta: -12.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 57.97 ms. Allocated memory is still 71.3 MB. Free memory was 43.3 MB in the beginning and 40.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] EXPR 0.0 [L60] COND TRUE res == 0.0 [L61] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...