./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1031.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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_1031.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 2c4d19baf0429684b688f90d909ef640d9fb6537 ......................................................................................................................................................................................................................................................................................................... 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_1031.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 2c4d19baf0429684b688f90d909ef640d9fb6537 ......................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:40:22,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 01:40:22,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 01:40:22,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 01:40:22,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 01:40:22,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 01:40:22,627 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 01:40:22,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 01:40:22,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 01:40:22,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 01:40:22,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 01:40:22,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 01:40:22,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:40:22,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:40:22,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:40:22,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:40:22,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:40:22,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:40:22,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:40:22,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:40:22,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:40:22,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:40:22,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:40:22,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:40:22,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:40:22,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:40:22,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:40:22,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:40:22,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:40:22,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:40:22,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:40:22,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:40:22,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:40:22,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:40:22,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:40:22,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:40:22,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:40:22,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:40:22,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:40:22,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:40:22,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:40:22,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 01:40:22,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:40:22,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:40:22,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:40:22,674 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:40:22,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:40:22,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:40:22,675 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:40:22,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:40:22,675 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:40:22,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 01:40:22,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:40:22,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:40:22,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:40:22,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:40:22,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:40:22,676 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:40:22,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:40:22,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:40:22,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:40:22,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:40:22,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:40:22,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:40:22,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:40:22,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:40:22,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:40:22,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:40:22,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 01:40:22,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 01:40:22,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:40:22,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:40:22,679 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2021-08-26 01:40:23,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:40:23,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:40:23,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:40:23,056 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:40:23,056 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:40:23,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-08-26 01:40:23,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9489feada/ec576987522a4838a18d49db594686ef/FLAG4dcfa7622 [2021-08-26 01:40:23,461 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:40:23,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-08-26 01:40:23,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9489feada/ec576987522a4838a18d49db594686ef/FLAG4dcfa7622 [2021-08-26 01:40:23,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9489feada/ec576987522a4838a18d49db594686ef [2021-08-26 01:40:23,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:40:23,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:40:23,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:40:23,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:40:23,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:40:23,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:40:23" (1/1) ... [2021-08-26 01:40:23,930 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d2b928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:23, skipping insertion in model container [2021-08-26 01:40:23,930 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:40:23" (1/1) ... [2021-08-26 01:40:23,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:40:23,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:40:24,175 WARN L228 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_1031.c[2057,2070] [2021-08-26 01:40:24,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:40:24,184 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:40:24,230 WARN L228 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_1031.c[2057,2070] [2021-08-26 01:40:24,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:40:24,247 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:40:24,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:24 WrapperNode [2021-08-26 01:40:24,247 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:40:24,248 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:40:24,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:40:24,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:40:24,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:24" (1/1) ... [2021-08-26 01:40:24,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:24" (1/1) ... [2021-08-26 01:40:24,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:40:24,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:40:24,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:40:24,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:40:24,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:24" (1/1) ... [2021-08-26 01:40:24,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:24" (1/1) ... [2021-08-26 01:40:24,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:24" (1/1) ... [2021-08-26 01:40:24,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:24" (1/1) ... [2021-08-26 01:40:24,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:24" (1/1) ... [2021-08-26 01:40:24,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:24" (1/1) ... [2021-08-26 01:40:24,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:24" (1/1) ... [2021-08-26 01:40:24,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:40:24,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:40:24,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:40:24,324 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:40:24,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:24" (1/1) ... [2021-08-26 01:40:24,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:40:24,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:40:24,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 01:40:24,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 01:40:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 01:40:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:40:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-08-26 01:40:24,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-26 01:40:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-26 01:40:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:40:24,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:40:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 01:40:24,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:40:24,750 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:40:24,750 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-26 01:40:24,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:40:24 BoogieIcfgContainer [2021-08-26 01:40:24,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:40:24,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:40:24,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:40:24,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:40:24,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:40:23" (1/3) ... [2021-08-26 01:40:24,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1a7f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:40:24, skipping insertion in model container [2021-08-26 01:40:24,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:24" (2/3) ... [2021-08-26 01:40:24,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1a7f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:40:24, skipping insertion in model container [2021-08-26 01:40:24,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:40:24" (3/3) ... [2021-08-26 01:40:24,757 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-08-26 01:40:24,762 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:40:24,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:40:24,802 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:40:24,808 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 01:40:24,808 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:40:24,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:24,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 01:40:24,824 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:40:24,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:40:24,825 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:40:24,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:40:24,829 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2021-08-26 01:40:24,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:40:24,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011767259] [2021-08-26 01:40:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:40:24,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:40:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:40:24,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:40:24,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:40:24,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011767259] [2021-08-26 01:40:24,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011767259] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:40:24,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:40:24,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 01:40:24,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109667725] [2021-08-26 01:40:24,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:40:24,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:40:24,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:40:24,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:40:24,957 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:24,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:40:24,966 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2021-08-26 01:40:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:40:24,968 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 01:40:24,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:40:24,973 INFO L225 Difference]: With dead ends: 50 [2021-08-26 01:40:24,973 INFO L226 Difference]: Without dead ends: 23 [2021-08-26 01:40:24,975 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:40:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-26 01:40:24,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-26 01:40:24,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-08-26 01:40:24,995 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2021-08-26 01:40:24,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:40:24,996 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-08-26 01:40:24,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:24,996 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-08-26 01:40:24,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 01:40:24,996 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:40:24,997 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:40:24,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 01:40:24,997 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:40:24,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:40:24,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2021-08-26 01:40:24,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:40:24,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476570225] [2021-08-26 01:40:24,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:40:24,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:40:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:40:25,029 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 01:40:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:40:25,065 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 01:40:25,065 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 01:40:25,066 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:40:25,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 01:40:25,075 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:40:25,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:40:25 BoogieIcfgContainer [2021-08-26 01:40:25,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:40:25,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:40:25,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:40:25,092 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:40:25,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:40:24" (3/4) ... [2021-08-26 01:40:25,094 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 01:40:25,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:40:25,096 INFO L168 Benchmark]: Toolchain (without parser) took 1184.21 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 42.1 MB in the beginning and 50.6 MB in the end (delta: -8.6 MB). Peak memory consumption was 2.7 MB. Max. memory is 16.1 GB. [2021-08-26 01:40:25,096 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 44.0 MB. Free memory was 26.9 MB in the beginning and 26.9 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:40:25,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.64 ms. Allocated memory is still 56.6 MB. Free memory was 41.7 MB in the beginning and 39.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 01:40:25,098 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.49 ms. Allocated memory is still 56.6 MB. Free memory was 39.7 MB in the beginning and 38.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:40:25,102 INFO L168 Benchmark]: Boogie Preprocessor took 32.30 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 36.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:40:25,102 INFO L168 Benchmark]: RCFGBuilder took 428.40 ms. Allocated memory is still 56.6 MB. Free memory was 36.6 MB in the beginning and 32.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-08-26 01:40:25,103 INFO L168 Benchmark]: TraceAbstraction took 338.13 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.0 MB in the beginning and 51.0 MB in the end (delta: -19.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-08-26 01:40:25,103 INFO L168 Benchmark]: Witness Printer took 2.66 ms. Allocated memory is still 69.2 MB. Free memory is still 50.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:40:25,108 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 44.0 MB. Free memory was 26.9 MB in the beginning and 26.9 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 327.64 ms. Allocated memory is still 56.6 MB. Free memory was 41.7 MB in the beginning and 39.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.49 ms. Allocated memory is still 56.6 MB. Free memory was 39.7 MB in the beginning and 38.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.30 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 36.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 428.40 ms. Allocated memory is still 56.6 MB. Free memory was 36.6 MB in the beginning and 32.5 MB in the end (delta: 4.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 338.13 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 32.0 MB in the beginning and 51.0 MB in the end (delta: -19.0 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Witness Printer took 2.66 ms. Allocated memory is still 69.2 MB. Free memory is still 50.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 81]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 36, overapproximation of someBinaryArithmeticDOUBLEoperation at line 76, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 17. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND TRUE exponent_less_1023 < 20 [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; [L77] double res = round_double(x); [L17] return x != x; [L80] COND TRUE !isnan_double(res) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 270.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.2ms, AutomataDifference: 26.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.4ms SsaConstructionTime, 43.0ms SatisfiabilityAnalysisTime, 32.3ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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 [2021-08-26 01:40:25,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:40:27,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 01:40:27,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 01:40:27,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 01:40:27,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 01:40:27,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 01:40:27,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 01:40:27,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 01:40:27,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 01:40:27,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 01:40:27,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 01:40:27,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 01:40:27,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:40:27,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:40:27,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:40:27,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:40:27,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:40:27,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:40:27,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:40:27,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:40:27,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:40:27,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:40:27,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:40:27,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:40:27,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:40:27,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:40:27,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:40:27,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:40:27,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:40:27,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:40:27,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:40:27,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:40:27,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:40:27,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:40:27,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:40:27,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:40:27,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:40:27,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:40:27,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:40:27,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:40:27,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:40:27,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 01:40:27,524 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:40:27,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:40:27,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:40:27,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:40:27,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:40:27,527 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:40:27,527 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:40:27,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:40:27,527 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:40:27,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:40:27,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:40:27,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:40:27,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:40:27,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:40:27,528 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 01:40:27,528 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 01:40:27,528 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:40:27,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:40:27,528 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:40:27,529 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:40:27,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:40:27,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:40:27,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:40:27,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:40:27,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:40:27,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:40:27,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:40:27,529 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 01:40:27,529 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 01:40:27,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:40:27,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:40:27,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 01:40:27,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2021-08-26 01:40:27,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:40:27,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:40:27,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:40:27,803 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:40:27,804 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:40:27,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-08-26 01:40:27,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16ab5480/175d58596c30450a8f5e28d6e3425fe8/FLAGa45ba4deb [2021-08-26 01:40:28,194 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:40:28,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2021-08-26 01:40:28,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16ab5480/175d58596c30450a8f5e28d6e3425fe8/FLAGa45ba4deb [2021-08-26 01:40:28,217 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b16ab5480/175d58596c30450a8f5e28d6e3425fe8 [2021-08-26 01:40:28,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:40:28,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:40:28,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:40:28,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:40:28,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:40:28,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:40:28" (1/1) ... [2021-08-26 01:40:28,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d07fa1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28, skipping insertion in model container [2021-08-26 01:40:28,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:40:28" (1/1) ... [2021-08-26 01:40:28,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:40:28,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:40:28,378 WARN L228 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_1031.c[2057,2070] [2021-08-26 01:40:28,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:40:28,423 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:40:28,447 WARN L228 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_1031.c[2057,2070] [2021-08-26 01:40:28,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:40:28,459 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:40:28,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28 WrapperNode [2021-08-26 01:40:28,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:40:28,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:40:28,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:40:28,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:40:28,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28" (1/1) ... [2021-08-26 01:40:28,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28" (1/1) ... [2021-08-26 01:40:28,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:40:28,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:40:28,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:40:28,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:40:28,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28" (1/1) ... [2021-08-26 01:40:28,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28" (1/1) ... [2021-08-26 01:40:28,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28" (1/1) ... [2021-08-26 01:40:28,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28" (1/1) ... [2021-08-26 01:40:28,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28" (1/1) ... [2021-08-26 01:40:28,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28" (1/1) ... [2021-08-26 01:40:28,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28" (1/1) ... [2021-08-26 01:40:28,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:40:28,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:40:28,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:40:28,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:40:28,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28" (1/1) ... [2021-08-26 01:40:28,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:40:28,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:40:28,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 01:40:28,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 01:40:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-08-26 01:40:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-08-26 01:40:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 01:40:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:40:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 01:40:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:40:28,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:40:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-26 01:40:28,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:40:28,769 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:40:28,769 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-08-26 01:40:28,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:40:28 BoogieIcfgContainer [2021-08-26 01:40:28,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:40:28,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:40:28,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:40:28,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:40:28,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:40:28" (1/3) ... [2021-08-26 01:40:28,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34122df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:40:28, skipping insertion in model container [2021-08-26 01:40:28,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:40:28" (2/3) ... [2021-08-26 01:40:28,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34122df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:40:28, skipping insertion in model container [2021-08-26 01:40:28,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:40:28" (3/3) ... [2021-08-26 01:40:28,774 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2021-08-26 01:40:28,777 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:40:28,777 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:40:28,803 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:40:28,806 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 01:40:28,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:40:28,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 01:40:28,828 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:40:28,828 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:40:28,828 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:40:28,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:40:28,831 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2021-08-26 01:40:28,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:40:28,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397233616] [2021-08-26 01:40:28,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:40:28,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:40:28,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:40:28,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:40:28,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 01:40:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:40:28,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 01:40:28,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:40:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:40:28,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:40:29,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:40:29,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:40:29,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397233616] [2021-08-26 01:40:29,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397233616] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:40:29,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:40:29,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 01:40:29,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541495815] [2021-08-26 01:40:29,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:40:29,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:40:29,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:40:29,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:40:29,046 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:29,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:40:29,057 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2021-08-26 01:40:29,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:40:29,058 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-08-26 01:40:29,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:40:29,063 INFO L225 Difference]: With dead ends: 50 [2021-08-26 01:40:29,063 INFO L226 Difference]: Without dead ends: 23 [2021-08-26 01:40:29,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:40:29,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-26 01:40:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-26 01:40:29,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-08-26 01:40:29,086 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2021-08-26 01:40:29,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:40:29,086 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-08-26 01:40:29,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:29,086 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-08-26 01:40:29,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 01:40:29,087 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:40:29,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:40:29,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 01:40:29,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:40:29,296 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:40:29,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:40:29,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2021-08-26 01:40:29,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:40:29,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483869590] [2021-08-26 01:40:29,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:40:29,299 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:40:29,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:40:29,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:40:29,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 01:40:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:40:29,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 01:40:29,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:40:29,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:40:29,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:40:29,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:40:29,671 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:40:29,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483869590] [2021-08-26 01:40:29,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483869590] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:40:29,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:40:29,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-08-26 01:40:29,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526883973] [2021-08-26 01:40:29,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 01:40:29,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:40:29,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 01:40:29,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-26 01:40:29,674 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:40:30,298 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-08-26 01:40:30,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 01:40:30,298 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-26 01:40:30,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:40:30,299 INFO L225 Difference]: With dead ends: 28 [2021-08-26 01:40:30,299 INFO L226 Difference]: Without dead ends: 22 [2021-08-26 01:40:30,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 219.3ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-08-26 01:40:30,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-26 01:40:30,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-08-26 01:40:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-08-26 01:40:30,302 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2021-08-26 01:40:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:40:30,302 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-08-26 01:40:30,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:30,302 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-08-26 01:40:30,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-26 01:40:30,303 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:40:30,303 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:40:30,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 01:40:30,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:40:30,513 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:40:30,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:40:30,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1251020519, now seen corresponding path program 1 times [2021-08-26 01:40:30,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:40:30,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855264673] [2021-08-26 01:40:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:40:30,514 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:40:30,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:40:30,515 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:40:30,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 01:40:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:40:30,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-26 01:40:30,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:40:30,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:40:30,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:40:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:40:31,060 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:40:31,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855264673] [2021-08-26 01:40:31,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855264673] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:40:31,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:40:31,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-08-26 01:40:31,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338342110] [2021-08-26 01:40:31,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-26 01:40:31,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:40:31,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-26 01:40:31,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-26 01:40:31,061 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:31,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:40:31,229 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-08-26 01:40:31,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 01:40:31,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-26 01:40:31,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:40:31,230 INFO L225 Difference]: With dead ends: 22 [2021-08-26 01:40:31,230 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 01:40:31,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 325.1ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-26 01:40:31,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 01:40:31,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 01:40:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 01:40:31,231 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-08-26 01:40:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:40:31,231 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 01:40:31,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:40:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 01:40:31,231 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 01:40:31,233 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:40:31,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 01:40:31,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:40:31,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 01:40:31,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:40:31,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:40:31,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:40:31,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:40:31,526 INFO L860 garLoopResultBuilder]: At program point L85(lines 68 86) the Hoare annotation is: true [2021-08-26 01:40:31,526 INFO L857 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2021-08-26 01:40:31,527 INFO L857 garLoopResultBuilder]: For program point L44(lines 44 47) no Hoare annotation was computed. [2021-08-26 01:40:31,527 INFO L853 garLoopResultBuilder]: At program point L65(lines 19 66) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|))) [2021-08-26 01:40:31,527 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 33) no Hoare annotation was computed. [2021-08-26 01:40:31,527 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 01:40:31,527 INFO L857 garLoopResultBuilder]: For program point L32-2(lines 32 33) no Hoare annotation was computed. [2021-08-26 01:40:31,527 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 01:40:31,527 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 01:40:31,527 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2021-08-26 01:40:31,527 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-08-26 01:40:31,527 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 01:40:31,527 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 58) no Hoare annotation was computed. [2021-08-26 01:40:31,528 INFO L857 garLoopResultBuilder]: For program point L54(lines 54 55) no Hoare annotation was computed. [2021-08-26 01:40:31,528 INFO L857 garLoopResultBuilder]: For program point L54-2(lines 54 55) no Hoare annotation was computed. [2021-08-26 01:40:31,528 INFO L853 garLoopResultBuilder]: At program point L17(line 17) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|))) [2021-08-26 01:40:31,528 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 42) no Hoare annotation was computed. [2021-08-26 01:40:31,528 INFO L857 garLoopResultBuilder]: For program point L59(lines 59 64) no Hoare annotation was computed. [2021-08-26 01:40:31,528 INFO L857 garLoopResultBuilder]: For program point L59-1(lines 19 66) no Hoare annotation was computed. [2021-08-26 01:40:31,528 INFO L857 garLoopResultBuilder]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2021-08-26 01:40:31,528 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2021-08-26 01:40:31,528 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) [2021-08-26 01:40:31,528 INFO L857 garLoopResultBuilder]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2021-08-26 01:40:31,528 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-08-26 01:40:31,528 INFO L857 garLoopResultBuilder]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-08-26 01:40:31,529 INFO L857 garLoopResultBuilder]: For program point L43(lines 43 58) no Hoare annotation was computed. [2021-08-26 01:40:31,532 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:40:31,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:40:31 BoogieIcfgContainer [2021-08-26 01:40:31,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:40:31,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:40:31,547 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:40:31,547 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:40:31,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:40:28" (3/4) ... [2021-08-26 01:40:31,549 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 01:40:31,564 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-08-26 01:40:31,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-08-26 01:40:31,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-26 01:40:31,565 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 01:40:31,593 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) [2021-08-26 01:40:31,609 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(x, x) && 1bv32 == \result) && !~fp.eq~DOUBLE(\result, \result) [2021-08-26 01:40:31,618 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 01:40:31,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:40:31,620 INFO L168 Benchmark]: Toolchain (without parser) took 3398.78 ms. Allocated memory was 54.5 MB in the beginning and 94.4 MB in the end (delta: 39.8 MB). Free memory was 39.5 MB in the beginning and 67.4 MB in the end (delta: -27.9 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2021-08-26 01:40:31,620 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 44.0 MB. Free memory was 26.5 MB in the beginning and 26.5 MB in the end (delta: 41.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:40:31,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.29 ms. Allocated memory is still 54.5 MB. Free memory was 39.4 MB in the beginning and 36.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 01:40:31,620 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.46 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 35.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:40:31,621 INFO L168 Benchmark]: Boogie Preprocessor took 16.90 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 33.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:40:31,621 INFO L168 Benchmark]: RCFGBuilder took 272.12 ms. Allocated memory is still 54.5 MB. Free memory was 33.4 MB in the beginning and 28.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-08-26 01:40:31,621 INFO L168 Benchmark]: TraceAbstraction took 2774.96 ms. Allocated memory was 54.5 MB in the beginning and 94.4 MB in the end (delta: 39.8 MB). Free memory was 28.2 MB in the beginning and 70.3 MB in the end (delta: -42.1 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2021-08-26 01:40:31,630 INFO L168 Benchmark]: Witness Printer took 72.10 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 67.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:40:31,632 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 44.0 MB. Free memory was 26.5 MB in the beginning and 26.5 MB in the end (delta: 41.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.29 ms. Allocated memory is still 54.5 MB. Free memory was 39.4 MB in the beginning and 36.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 20.46 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 35.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.90 ms. Allocated memory is still 54.5 MB. Free memory was 35.1 MB in the beginning and 33.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 272.12 ms. Allocated memory is still 54.5 MB. Free memory was 33.4 MB in the beginning and 28.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2774.96 ms. Allocated memory was 54.5 MB in the beginning and 94.4 MB in the end (delta: 39.8 MB). Free memory was 28.2 MB in the beginning and 70.3 MB in the end (delta: -42.1 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. * Witness Printer took 72.10 ms. Allocated memory is still 94.4 MB. Free memory was 70.3 MB in the beginning and 67.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 81]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2729.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 17.0ms, AutomataDifference: 828.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 83.8ms, InitialAbstractionConstructionTime: 5.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 59 SDtfs, 31 SDslu, 79 SDs, 0 SdLazy, 37 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 545.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 544.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 14.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 26 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 55.4ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 18.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 26.3ms SsaConstructionTime, 98.8ms SatisfiabilityAnalysisTime, 874.8ms InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 12 QuantifiedInterpolants, 249 SizeOfPredicates, 18 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(x, x) && 1bv32 == \result) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) RESULT: Ultimate proved your program to be correct! [2021-08-26 01:40:31,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...