./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 096883e9 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0730b.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 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 .................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0730b.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 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 .............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-096883e [2020-12-01 23:13:58,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:13:58,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:13:58,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:13:58,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:13:58,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:13:58,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:13:58,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:13:58,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:13:58,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:13:58,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:13:58,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:13:58,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:13:58,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:13:58,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:13:58,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:13:58,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:13:58,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:13:58,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:13:58,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:13:58,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:13:58,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:13:58,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:13:58,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:13:58,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:13:58,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:13:58,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:13:58,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:13:58,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:13:58,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:13:58,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:13:58,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:13:58,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:13:58,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:13:58,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:13:58,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:13:58,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:13:58,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:13:58,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:13:58,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:13:58,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:13:58,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:13:58,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:13:58,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:13:58,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:13:58,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:13:58,325 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:13:58,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:13:58,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:13:58,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:13:58,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:13:58,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:13:58,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:13:58,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:13:58,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:13:58,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:13:58,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:13:58,329 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:13:58,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:13:58,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:13:58,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:13:58,330 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:13:58,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:13:58,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:13:58,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:13:58,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:13:58,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:13:58,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:13:58,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:13:58,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:13:58,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:13:58,333 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-12-01 23:13:58,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:13:58,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:13:58,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:13:58,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:13:58,805 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:13:58,807 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-12-01 23:13:58,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4382219ad/0d276d933a484e5bbba075847e988754/FLAGc38253518 [2020-12-01 23:13:59,481 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:13:59,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-12-01 23:13:59,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4382219ad/0d276d933a484e5bbba075847e988754/FLAGc38253518 [2020-12-01 23:13:59,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4382219ad/0d276d933a484e5bbba075847e988754 [2020-12-01 23:13:59,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:13:59,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:13:59,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:13:59,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:13:59,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:13:59,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b366cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:13:59, skipping insertion in model container [2020-12-01 23:13:59,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:13:59" (1/1) ... [2020-12-01 23:13:59,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:13:59,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:14:00,160 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c[3225,3238] [2020-12-01 23:14:00,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:14:00,174 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:14:00,220 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c[3225,3238] [2020-12-01 23:14:00,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:14:00,247 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:14:00,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:00 WrapperNode [2020-12-01 23:14:00,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:14:00,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:14:00,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:14:00,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:14:00,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:00" (1/1) ... [2020-12-01 23:14:00,272 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:00" (1/1) ... [2020-12-01 23:14:00,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:14:00,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:14:00,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:14:00,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:14:00,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:00" (1/1) ... [2020-12-01 23:14:00,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:00" (1/1) ... [2020-12-01 23:14:00,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:00" (1/1) ... [2020-12-01 23:14:00,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:00" (1/1) ... [2020-12-01 23:14:00,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:00" (1/1) ... [2020-12-01 23:14:00,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:00" (1/1) ... [2020-12-01 23:14:00,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:00" (1/1) ... [2020-12-01 23:14:00,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:14:00,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:14:00,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:14:00,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:14:00,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:14:00,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:14:00,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:14:00,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 23:14:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 23:14:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 23:14:00,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:14:00,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:14:00,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 23:14:00,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:14:01,452 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:14:01,453 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-01 23:14:01,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:14:01 BoogieIcfgContainer [2020-12-01 23:14:01,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:14:01,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:14:01,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:14:01,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:14:01,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:13:59" (1/3) ... [2020-12-01 23:14:01,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449c5339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:14:01, skipping insertion in model container [2020-12-01 23:14:01,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:00" (2/3) ... [2020-12-01 23:14:01,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449c5339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:14:01, skipping insertion in model container [2020-12-01 23:14:01,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:14:01" (3/3) ... [2020-12-01 23:14:01,479 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-12-01 23:14:01,498 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:14:01,502 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:14:01,515 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:14:01,544 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:14:01,544 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:14:01,545 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:14:01,545 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:14:01,545 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:14:01,545 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:14:01,545 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:14:01,545 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:14:01,567 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-01 23:14:01,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 23:14:01,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:14:01,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:14:01,576 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:14:01,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:14:01,583 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-12-01 23:14:01,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:14:01,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43261219] [2020-12-01 23:14:01,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:14:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:14:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:14:01,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43261219] [2020-12-01 23:14:01,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:14:01,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 23:14:01,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819717692] [2020-12-01 23:14:01,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:14:01,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:14:01,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:14:01,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:14:01,786 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-12-01 23:14:01,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:14:01,812 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2020-12-01 23:14:01,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:14:01,814 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-01 23:14:01,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:14:01,825 INFO L225 Difference]: With dead ends: 104 [2020-12-01 23:14:01,825 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 23:14:01,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:14:01,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 23:14:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-01 23:14:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-01 23:14:01,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-12-01 23:14:01,875 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-12-01 23:14:01,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:14:01,876 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-12-01 23:14:01,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:14:01,876 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-12-01 23:14:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 23:14:01,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:14:01,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:14:01,878 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:14:01,878 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:14:01,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:14:01,879 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-12-01 23:14:01,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:14:01,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374387118] [2020-12-01 23:14:01,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:14:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:14:01,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:14:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:14:01,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:14:02,021 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 23:14:02,022 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:14:02,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 23:14:02,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:14:02 BoogieIcfgContainer [2020-12-01 23:14:02,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:14:02,056 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:14:02,056 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:14:02,057 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:14:02,057 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:14:01" (3/4) ... [2020-12-01 23:14:02,061 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 23:14:02,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:14:02,064 INFO L168 Benchmark]: Toolchain (without parser) took 2208.76 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 19.4 MB in the beginning and 28.2 MB in the end (delta: -8.8 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:02,065 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 41.9 MB. Free memory is still 23.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:14:02,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.96 ms. Allocated memory is still 41.9 MB. Free memory was 19.3 MB in the beginning and 18.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:02,067 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.81 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 18.0 MB in the beginning and 38.2 MB in the end (delta: -20.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:02,068 INFO L168 Benchmark]: Boogie Preprocessor took 54.41 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 36.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:02,069 INFO L168 Benchmark]: RCFGBuilder took 1080.16 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 23.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:02,070 INFO L168 Benchmark]: TraceAbstraction took 598.94 ms. Allocated memory is still 54.5 MB. Free memory was 23.0 MB in the beginning and 28.8 MB in the end (delta: -5.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:14:02,071 INFO L168 Benchmark]: Witness Printer took 5.52 ms. Allocated memory is still 54.5 MB. Free memory was 28.5 MB in the beginning and 28.2 MB in the end (delta: 217.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:14:02,076 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 41.9 MB. Free memory is still 23.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 391.96 ms. Allocated memory is still 41.9 MB. Free memory was 19.3 MB in the beginning and 18.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.81 ms. Allocated memory was 41.9 MB in the beginning and 54.5 MB in the end (delta: 12.6 MB). Free memory was 18.0 MB in the beginning and 38.2 MB in the end (delta: -20.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.41 ms. Allocated memory is still 54.5 MB. Free memory was 38.2 MB in the beginning and 36.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1080.16 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 23.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 598.94 ms. Allocated memory is still 54.5 MB. Free memory was 23.0 MB in the beginning and 28.8 MB in the end (delta: -5.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.52 ms. Allocated memory is still 54.5 MB. Free memory was 28.5 MB in the beginning and 28.2 MB in the end (delta: 217.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 151, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L156] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 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=53occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-096883e [2020-12-01 23:14:04,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:14:04,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:14:04,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:14:04,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:14:04,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:14:04,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:14:04,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:14:04,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:14:04,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:14:04,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:14:04,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:14:04,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:14:04,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:14:04,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:14:04,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:14:04,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:14:04,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:14:04,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:14:04,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:14:04,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:14:04,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:14:04,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:14:04,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:14:04,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:14:04,903 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:14:04,903 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:14:04,904 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:14:04,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:14:04,906 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:14:04,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:14:04,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:14:04,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:14:04,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:14:04,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:14:04,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:14:04,912 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:14:04,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:14:04,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:14:04,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:14:04,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:14:04,916 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 23:14:04,950 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:14:04,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:14:04,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:14:04,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:14:04,953 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:14:04,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:14:04,953 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:14:04,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:14:04,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:14:04,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:14:04,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:14:04,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:14:04,955 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:14:04,955 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:14:04,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:14:04,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:14:04,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:14:04,956 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:14:04,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:14:04,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:14:04,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:14:04,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:14:04,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:14:04,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:14:04,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:14:04,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:14:04,959 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:14:04,959 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:14:04,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:14:04,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:14:04,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:14:04,960 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e7d1cf180b9d7ec82be720739bf017cddebb7c7 [2020-12-01 23:14:05,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:14:05,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:14:05,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:14:05,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:14:05,416 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:14:05,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-12-01 23:14:05,516 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/753e04fc1/e5d2a5a37587491c824b58b1fd54232e/FLAG02a399dbe [2020-12-01 23:14:06,219 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:14:06,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c [2020-12-01 23:14:06,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/753e04fc1/e5d2a5a37587491c824b58b1fd54232e/FLAG02a399dbe [2020-12-01 23:14:06,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/753e04fc1/e5d2a5a37587491c824b58b1fd54232e [2020-12-01 23:14:06,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:14:06,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:14:06,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:14:06,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:14:06,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:14:06,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:14:06" (1/1) ... [2020-12-01 23:14:06,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14d5a697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:06, skipping insertion in model container [2020-12-01 23:14:06,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:14:06" (1/1) ... [2020-12-01 23:14:06,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:14:06,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:14:06,940 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c[3225,3238] [2020-12-01 23:14:06,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:14:06,958 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:14:07,036 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0730b.c[3225,3238] [2020-12-01 23:14:07,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:14:07,063 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:14:07,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:07 WrapperNode [2020-12-01 23:14:07,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:14:07,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:14:07,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:14:07,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:14:07,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:07" (1/1) ... [2020-12-01 23:14:07,091 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:07" (1/1) ... [2020-12-01 23:14:07,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:14:07,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:14:07,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:14:07,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:14:07,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:07" (1/1) ... [2020-12-01 23:14:07,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:07" (1/1) ... [2020-12-01 23:14:07,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:07" (1/1) ... [2020-12-01 23:14:07,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:07" (1/1) ... [2020-12-01 23:14:07,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:07" (1/1) ... [2020-12-01 23:14:07,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:07" (1/1) ... [2020-12-01 23:14:07,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:07" (1/1) ... [2020-12-01 23:14:07,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:14:07,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:14:07,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:14:07,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:14:07,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:14:07,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-01 23:14:07,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 23:14:07,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:14:07,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:14:07,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 23:14:07,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:14:07,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:14:07,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 23:14:07,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:14:12,961 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:14:12,962 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-12-01 23:14:12,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:14:12 BoogieIcfgContainer [2020-12-01 23:14:12,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:14:12,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:14:12,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:14:12,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:14:12,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:14:06" (1/3) ... [2020-12-01 23:14:12,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68926627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:14:12, skipping insertion in model container [2020-12-01 23:14:12,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:14:07" (2/3) ... [2020-12-01 23:14:12,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68926627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:14:12, skipping insertion in model container [2020-12-01 23:14:12,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:14:12" (3/3) ... [2020-12-01 23:14:12,973 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-12-01 23:14:12,989 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:14:12,993 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:14:13,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:14:13,034 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:14:13,035 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:14:13,035 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:14:13,035 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:14:13,035 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:14:13,035 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:14:13,035 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:14:13,036 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:14:13,051 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-01 23:14:13,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 23:14:13,057 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:14:13,058 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:14:13,058 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:14:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:14:13,064 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2020-12-01 23:14:13,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:14:13,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941812572] [2020-12-01 23:14:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 23:14:13,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:14:13,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 23:14:13,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:14:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:14:13,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:14:13,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:14:13,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941812572] [2020-12-01 23:14:13,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:14:13,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 23:14:13,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242100041] [2020-12-01 23:14:13,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:14:13,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:14:13,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:14:13,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:14:13,522 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-12-01 23:14:13,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:14:13,547 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2020-12-01 23:14:13,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:14:13,548 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-01 23:14:13,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:14:13,559 INFO L225 Difference]: With dead ends: 104 [2020-12-01 23:14:13,560 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 23:14:13,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:14:13,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 23:14:13,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-01 23:14:13,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-01 23:14:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2020-12-01 23:14:13,602 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2020-12-01 23:14:13,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:14:13,603 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2020-12-01 23:14:13,603 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:14:13,603 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2020-12-01 23:14:13,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 23:14:13,604 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:14:13,604 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:14:13,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:14:13,818 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:14:13,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:14:13,820 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2020-12-01 23:14:13,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:14:13,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425819572] [2020-12-01 23:14:13,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 23:14:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:14:14,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 23:14:14,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:14:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:14:14,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:14:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:14:14,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425819572] [2020-12-01 23:14:14,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:14:14,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 23:14:14,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368225109] [2020-12-01 23:14:14,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 23:14:14,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:14:14,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 23:14:14,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:14:14,450 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2020-12-01 23:14:15,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:14:15,954 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2020-12-01 23:14:16,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 23:14:16,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-01 23:14:16,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:14:16,137 INFO L225 Difference]: With dead ends: 59 [2020-12-01 23:14:16,137 INFO L226 Difference]: Without dead ends: 17 [2020-12-01 23:14:16,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:14:16,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-01 23:14:16,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-01 23:14:16,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-01 23:14:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-01 23:14:16,144 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2020-12-01 23:14:16,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:14:16,144 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-01 23:14:16,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 23:14:16,145 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-01 23:14:16,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 23:14:16,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:14:16,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:14:16,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:14:16,357 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:14:16,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:14:16,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2020-12-01 23:14:16,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:14:16,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752853862] [2020-12-01 23:14:16,360 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 [2020-12-01 23:14:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:14:16,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 23:14:16,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:14:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:14:16,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:14:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:14:16,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752853862] [2020-12-01 23:14:16,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:14:16,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-12-01 23:14:16,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452565647] [2020-12-01 23:14:16,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 23:14:16,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:14:16,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 23:14:16,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:14:16,788 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2020-12-01 23:14:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:14:20,099 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-12-01 23:14:20,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 23:14:20,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-01 23:14:20,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:14:20,101 INFO L225 Difference]: With dead ends: 29 [2020-12-01 23:14:20,102 INFO L226 Difference]: Without dead ends: 26 [2020-12-01 23:14:20,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-01 23:14:20,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-01 23:14:20,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2020-12-01 23:14:20,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-01 23:14:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-01 23:14:20,108 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2020-12-01 23:14:20,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:14:20,109 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-01 23:14:20,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 23:14:20,109 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-01 23:14:20,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 23:14:20,110 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:14:20,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:14:20,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 23:14:20,329 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:14:20,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:14:20,331 INFO L82 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2020-12-01 23:14:20,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:14:20,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024126221] [2020-12-01 23:14:20,332 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 [2020-12-01 23:14:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:14:21,307 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:14:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:14:22,270 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:14:22,377 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 23:14:22,378 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:14:22,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 23:14:22,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:14:22 BoogieIcfgContainer [2020-12-01 23:14:22,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:14:22,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:14:22,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:14:22,633 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:14:22,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:14:12" (3/4) ... [2020-12-01 23:14:22,636 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:14:22,755 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:14:22,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:14:22,761 INFO L168 Benchmark]: Toolchain (without parser) took 16226.78 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 16.9 MB in the beginning and 25.6 MB in the end (delta: -8.7 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:22,762 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 39.8 MB. Free memory was 24.4 MB in the beginning and 24.4 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:14:22,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.95 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 16.7 MB in the beginning and 30.4 MB in the end (delta: -13.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:22,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.43 ms. Allocated memory is still 48.2 MB. Free memory was 30.3 MB in the beginning and 28.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:22,769 INFO L168 Benchmark]: Boogie Preprocessor took 48.84 ms. Allocated memory is still 48.2 MB. Free memory was 28.3 MB in the beginning and 26.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:22,770 INFO L168 Benchmark]: RCFGBuilder took 5787.46 ms. Allocated memory is still 48.2 MB. Free memory was 26.2 MB in the beginning and 24.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:22,771 INFO L168 Benchmark]: TraceAbstraction took 9666.32 ms. Allocated memory is still 48.2 MB. Free memory was 23.5 MB in the beginning and 28.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:22,774 INFO L168 Benchmark]: Witness Printer took 122.78 ms. Allocated memory is still 48.2 MB. Free memory was 28.4 MB in the beginning and 25.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:14:22,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 39.8 MB. Free memory was 24.4 MB in the beginning and 24.4 MB in the end (delta: 35.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 529.95 ms. Allocated memory was 39.8 MB in the beginning and 48.2 MB in the end (delta: 8.4 MB). Free memory was 16.7 MB in the beginning and 30.4 MB in the end (delta: -13.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.43 ms. Allocated memory is still 48.2 MB. Free memory was 30.3 MB in the beginning and 28.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.84 ms. Allocated memory is still 48.2 MB. Free memory was 28.3 MB in the beginning and 26.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5787.46 ms. Allocated memory is still 48.2 MB. Free memory was 26.2 MB in the beginning and 24.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9666.32 ms. Allocated memory is still 48.2 MB. Free memory was 23.5 MB in the beginning and 28.4 MB in the end (delta: -4.9 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Witness Printer took 122.78 ms. Allocated memory is still 48.2 MB. Free memory was 28.4 MB in the beginning and 25.6 MB in the end (delta: 2.7 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: 156]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L151] double x = -0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND FALSE !((ix0 & 0x7ff00000) == 0x7ff00000) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L38] COND TRUE ix0 <= 0 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L39] COND FALSE !(((ix0 & (~sign)) | ix1) == 0) VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L41] COND TRUE ix0 < 0 [L42] return (x - x) / (x - x); VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L156] reach_error() VAL [one_sqrt=1.0, tiny_sqrt=0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 79 SDslu, 46 SDs, 0 SdLazy, 25 SolverSat, 3 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 3 QuantifiedInterpolants, 1322 SizeOfPredicates, 10 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 15 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! Received shutdown request...