./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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_1252a.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 23f3104f6bf674f4cf2d86feffb86c85d21d7d18 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1252a.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 23f3104f6bf674f4cf2d86feffb86c85d21d7d18 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 08:25:17,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 08:25:17,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 08:25:17,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 08:25:17,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 08:25:17,220 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 08:25:17,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 08:25:17,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 08:25:17,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 08:25:17,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 08:25:17,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 08:25:17,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 08:25:17,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 08:25:17,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 08:25:17,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 08:25:17,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 08:25:17,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 08:25:17,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 08:25:17,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 08:25:17,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 08:25:17,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 08:25:17,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 08:25:17,270 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 08:25:17,271 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 08:25:17,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 08:25:17,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 08:25:17,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 08:25:17,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 08:25:17,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 08:25:17,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 08:25:17,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 08:25:17,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 08:25:17,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 08:25:17,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 08:25:17,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 08:25:17,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 08:25:17,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 08:25:17,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 08:25:17,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 08:25:17,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 08:25:17,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 08:25:17,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 08:25:17,325 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 08:25:17,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 08:25:17,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 08:25:17,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 08:25:17,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 08:25:17,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 08:25:17,329 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 08:25:17,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 08:25:17,329 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 08:25:17,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 08:25:17,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 08:25:17,330 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 08:25:17,330 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 08:25:17,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 08:25:17,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 08:25:17,331 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 08:25:17,331 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 08:25:17,331 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 08:25:17,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 08:25:17,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 08:25:17,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 08:25:17,332 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 08:25:17,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:25:17,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 08:25:17,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 08:25:17,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 08:25:17,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 08:25:17,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 08:25:17,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 08:25:17,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 08:25:17,334 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f3104f6bf674f4cf2d86feffb86c85d21d7d18 [2021-08-29 08:25:17,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 08:25:17,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 08:25:17,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 08:25:17,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 08:25:17,667 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 08:25:17,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-08-29 08:25:17,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df60bad35/ad8a228e9e3f40619f5859355d9d7e57/FLAG87bb839b1 [2021-08-29 08:25:18,314 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 08:25:18,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-08-29 08:25:18,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df60bad35/ad8a228e9e3f40619f5859355d9d7e57/FLAG87bb839b1 [2021-08-29 08:25:18,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df60bad35/ad8a228e9e3f40619f5859355d9d7e57 [2021-08-29 08:25:18,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 08:25:18,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 08:25:18,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 08:25:18,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 08:25:18,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 08:25:18,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:25:18" (1/1) ... [2021-08-29 08:25:18,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb2a56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18, skipping insertion in model container [2021-08-29 08:25:18,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:25:18" (1/1) ... [2021-08-29 08:25:18,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 08:25:18,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 08:25:18,906 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_1252a.c[2154,2167] [2021-08-29 08:25:18,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:25:18,919 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 08:25:18,969 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_1252a.c[2154,2167] [2021-08-29 08:25:18,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:25:18,983 INFO L208 MainTranslator]: Completed translation [2021-08-29 08:25:18,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18 WrapperNode [2021-08-29 08:25:18,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 08:25:18,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 08:25:18,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 08:25:18,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 08:25:18,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18" (1/1) ... [2021-08-29 08:25:19,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18" (1/1) ... [2021-08-29 08:25:19,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 08:25:19,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 08:25:19,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 08:25:19,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 08:25:19,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18" (1/1) ... [2021-08-29 08:25:19,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18" (1/1) ... [2021-08-29 08:25:19,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18" (1/1) ... [2021-08-29 08:25:19,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18" (1/1) ... [2021-08-29 08:25:19,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18" (1/1) ... [2021-08-29 08:25:19,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18" (1/1) ... [2021-08-29 08:25:19,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18" (1/1) ... [2021-08-29 08:25:19,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 08:25:19,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 08:25:19,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 08:25:19,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 08:25:19,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18" (1/1) ... [2021-08-29 08:25:19,106 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:25:19,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:25:19,131 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) [2021-08-29 08:25:19,153 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 [2021-08-29 08:25:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 08:25:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 08:25:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-29 08:25:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 08:25:19,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 08:25:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 08:25:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 08:25:19,426 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 08:25:19,426 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-08-29 08:25:19,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:25:19 BoogieIcfgContainer [2021-08-29 08:25:19,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 08:25:19,429 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 08:25:19,429 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 08:25:19,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 08:25:19,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:25:18" (1/3) ... [2021-08-29 08:25:19,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd87c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:25:19, skipping insertion in model container [2021-08-29 08:25:19,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:18" (2/3) ... [2021-08-29 08:25:19,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd87c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:25:19, skipping insertion in model container [2021-08-29 08:25:19,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:25:19" (3/3) ... [2021-08-29 08:25:19,437 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2021-08-29 08:25:19,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 08:25:19,442 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 08:25:19,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 08:25:19,504 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 [2021-08-29 08:25:19,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 08:25:19,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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) [2021-08-29 08:25:19,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 08:25:19,569 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:19,569 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:19,576 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:19,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:19,581 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-08-29 08:25:19,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:25:19,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662047535] [2021-08-29 08:25:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:19,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:25:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:19,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 08:25:19,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662047535] [2021-08-29 08:25:19,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662047535] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:19,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:19,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 08:25:19,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647090050] [2021-08-29 08:25:19,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 08:25:19,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 08:25:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 08:25:19,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:25:19,782 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-29 08:25:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:19,894 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-08-29 08:25:19,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 08:25:19,909 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-08-29 08:25:19,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:19,915 INFO L225 Difference]: With dead ends: 62 [2021-08-29 08:25:19,916 INFO L226 Difference]: Without dead ends: 29 [2021-08-29 08:25:19,918 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:25:19,921 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.53ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.21ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:19,934 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.53ms Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 93.21ms Time] [2021-08-29 08:25:19,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-29 08:25:19,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-29 08:25:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 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) [2021-08-29 08:25:19,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-08-29 08:25:19,969 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-08-29 08:25:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:19,970 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-08-29 08:25:19,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-29 08:25:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-08-29 08:25:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 08:25:19,971 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:19,971 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:19,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 08:25:19,971 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:19,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-08-29 08:25:19,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:25:19,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515807411] [2021-08-29 08:25:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:19,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:25:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:20,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 08:25:20,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515807411] [2021-08-29 08:25:20,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515807411] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:20,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:20,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 08:25:20,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504182605] [2021-08-29 08:25:20,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 08:25:20,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 08:25:20,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 08:25:20,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 08:25:20,099 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-08-29 08:25:20,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:20,278 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2021-08-29 08:25:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 08:25:20,278 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2021-08-29 08:25:20,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:20,279 INFO L225 Difference]: With dead ends: 53 [2021-08-29 08:25:20,279 INFO L226 Difference]: Without dead ends: 44 [2021-08-29 08:25:20,280 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 08:25:20,281 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.46ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.02ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:20,282 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 137 Unknown, 0 Unchecked, 2.46ms Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 150.02ms Time] [2021-08-29 08:25:20,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-08-29 08:25:20,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-08-29 08:25:20,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-08-29 08:25:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-08-29 08:25:20,296 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-08-29 08:25:20,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:20,296 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-08-29 08:25:20,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-08-29 08:25:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-08-29 08:25:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 08:25:20,297 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:20,298 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:20,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 08:25:20,298 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:20,299 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2021-08-29 08:25:20,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:25:20,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357152867] [2021-08-29 08:25:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:20,299 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:25:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:20,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:20,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 08:25:20,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357152867] [2021-08-29 08:25:20,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357152867] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:20,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:20,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 08:25:20,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384735271] [2021-08-29 08:25:20,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 08:25:20,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 08:25:20,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 08:25:20,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 08:25:20,387 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-08-29 08:25:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:20,556 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2021-08-29 08:25:20,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 08:25:20,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 [2021-08-29 08:25:20,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:20,559 INFO L225 Difference]: With dead ends: 55 [2021-08-29 08:25:20,559 INFO L226 Difference]: Without dead ends: 46 [2021-08-29 08:25:20,560 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 08:25:20,567 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.95ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:20,568 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 153 Unknown, 0 Unchecked, 2.39ms Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 140.95ms Time] [2021-08-29 08:25:20,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-29 08:25:20,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2021-08-29 08:25:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-08-29 08:25:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-08-29 08:25:20,581 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2021-08-29 08:25:20,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:20,581 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-08-29 08:25:20,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-08-29 08:25:20,582 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-08-29 08:25:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 08:25:20,584 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:20,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:20,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 08:25:20,585 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:20,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2021-08-29 08:25:20,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:25:20,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802304652] [2021-08-29 08:25:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:20,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:25:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:20,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 08:25:20,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802304652] [2021-08-29 08:25:20,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802304652] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:20,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:20,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 08:25:20,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043564787] [2021-08-29 08:25:20,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 08:25:20,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 08:25:20,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 08:25:20,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 08:25:20,663 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-08-29 08:25:20,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:20,792 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2021-08-29 08:25:20,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 08:25:20,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-08-29 08:25:20,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:20,794 INFO L225 Difference]: With dead ends: 57 [2021-08-29 08:25:20,795 INFO L226 Difference]: Without dead ends: 48 [2021-08-29 08:25:20,795 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 08:25:20,804 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.82ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.55ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:20,805 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 153 Unknown, 0 Unchecked, 3.82ms Time], IncrementalHoareTripleChecker [3 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 98.55ms Time] [2021-08-29 08:25:20,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-29 08:25:20,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2021-08-29 08:25:20,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-08-29 08:25:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-08-29 08:25:20,815 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2021-08-29 08:25:20,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:20,815 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-08-29 08:25:20,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-08-29 08:25:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-08-29 08:25:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 08:25:20,816 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:20,816 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:20,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 08:25:20,816 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:20,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:20,817 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2021-08-29 08:25:20,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:25:20,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277761242] [2021-08-29 08:25:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:20,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:25:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:20,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 08:25:20,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277761242] [2021-08-29 08:25:20,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277761242] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:20,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:20,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 08:25:20,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095554127] [2021-08-29 08:25:20,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 08:25:20,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 08:25:20,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 08:25:20,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 08:25:20,887 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-08-29 08:25:21,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:21,006 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2021-08-29 08:25:21,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 08:25:21,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-08-29 08:25:21,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:21,009 INFO L225 Difference]: With dead ends: 55 [2021-08-29 08:25:21,009 INFO L226 Difference]: Without dead ends: 46 [2021-08-29 08:25:21,009 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.99ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 08:25:21,010 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.62ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:21,010 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 153 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [1 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 97.62ms Time] [2021-08-29 08:25:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-29 08:25:21,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2021-08-29 08:25:21,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-08-29 08:25:21,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-08-29 08:25:21,021 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2021-08-29 08:25:21,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:21,022 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-08-29 08:25:21,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-08-29 08:25:21,022 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-08-29 08:25:21,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 08:25:21,023 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:21,023 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:21,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 08:25:21,024 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:21,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:21,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2021-08-29 08:25:21,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 08:25:21,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094100272] [2021-08-29 08:25:21,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:21,028 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 08:25:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:25:21,070 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 08:25:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 08:25:21,122 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 08:25:21,122 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 08:25:21,123 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 08:25:21,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 08:25:21,140 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 08:25:21,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:25:21 BoogieIcfgContainer [2021-08-29 08:25:21,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 08:25:21,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 08:25:21,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 08:25:21,176 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 08:25:21,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:25:19" (3/4) ... [2021-08-29 08:25:21,179 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 08:25:21,179 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 08:25:21,180 INFO L158 Benchmark]: Toolchain (without parser) took 2464.40ms. Allocated memory was 54.5MB in the beginning and 81.8MB in the end (delta: 27.3MB). Free memory was 33.1MB in the beginning and 54.3MB in the end (delta: -21.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-08-29 08:25:21,180 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.6MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:25:21,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 264.24ms. Allocated memory is still 54.5MB. Free memory was 32.9MB in the beginning and 38.0MB in the end (delta: -5.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 08:25:21,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.56ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 38.0MB in the beginning and 49.9MB in the end (delta: -11.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:25:21,181 INFO L158 Benchmark]: Boogie Preprocessor took 48.49ms. Allocated memory is still 67.1MB. Free memory was 49.9MB in the beginning and 48.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:25:21,181 INFO L158 Benchmark]: RCFGBuilder took 329.03ms. Allocated memory is still 67.1MB. Free memory was 48.4MB in the beginning and 37.3MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 08:25:21,181 INFO L158 Benchmark]: TraceAbstraction took 1745.70ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 36.8MB in the beginning and 54.3MB in the end (delta: -17.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:25:21,182 INFO L158 Benchmark]: Witness Printer took 3.51ms. Allocated memory is still 81.8MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:25:21,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.6MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 264.24ms. Allocated memory is still 54.5MB. Free memory was 32.9MB in the beginning and 38.0MB in the end (delta: -5.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.56ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 38.0MB in the beginning and 49.9MB in the end (delta: -11.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.49ms. Allocated memory is still 67.1MB. Free memory was 49.9MB in the beginning and 48.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 329.03ms. Allocated memory is still 67.1MB. Free memory was 48.4MB in the beginning and 37.3MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1745.70ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 36.8MB in the beginning and 54.3MB in the end (delta: -17.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.51ms. Allocated memory is still 81.8MB. Free memory is still 54.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 87]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 86, overapproximation of someUnaryDOUBLEoperation at line 81. Possible FailurePath: [L81] double x = -0.0; [L82] double y = 0.0; [L26] __uint32_t msw, lsw; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1643.36ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 22.24ms, AutomataDifference: 827.26ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 46.76ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 64 SdHoareTripleChecker+Valid, 580.36ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 458.71ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 298 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 633 IncrementalHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 633 mSolverCounterSat, 11.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.71ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 61.12ms AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.29ms SsaConstructionTime, 158.27ms SatisfiabilityAnalysisTime, 284.72ms InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2021-08-29 08:25:21,221 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-wip.dd.seqcomp-5fbdf5b [2021-08-29 08:25:23,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 08:25:23,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 08:25:23,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 08:25:23,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 08:25:23,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 08:25:23,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 08:25:23,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 08:25:23,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 08:25:23,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 08:25:23,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 08:25:23,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 08:25:23,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 08:25:23,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 08:25:23,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 08:25:23,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 08:25:23,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 08:25:23,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 08:25:23,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 08:25:23,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 08:25:23,092 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 08:25:23,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 08:25:23,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 08:25:23,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 08:25:23,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 08:25:23,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 08:25:23,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 08:25:23,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 08:25:23,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 08:25:23,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 08:25:23,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 08:25:23,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 08:25:23,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 08:25:23,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 08:25:23,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 08:25:23,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 08:25:23,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 08:25:23,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 08:25:23,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 08:25:23,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 08:25:23,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 08:25:23,119 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 08:25:23,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 08:25:23,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 08:25:23,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 08:25:23,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 08:25:23,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 08:25:23,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 08:25:23,140 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 08:25:23,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 08:25:23,140 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 08:25:23,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 08:25:23,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 08:25:23,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 08:25:23,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 08:25:23,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 08:25:23,141 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 08:25:23,141 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 08:25:23,141 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 08:25:23,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 08:25:23,142 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 08:25:23,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 08:25:23,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 08:25:23,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 08:25:23,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 08:25:23,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:25:23,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 08:25:23,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 08:25:23,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 08:25:23,143 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 08:25:23,143 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 08:25:23,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 08:25:23,144 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 08:25:23,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 08:25:23,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23f3104f6bf674f4cf2d86feffb86c85d21d7d18 [2021-08-29 08:25:23,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 08:25:23,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 08:25:23,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 08:25:23,476 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 08:25:23,477 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 08:25:23,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-08-29 08:25:23,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc021086/690a78b8f98b423c90aa2114deaa29ac/FLAG938b774c2 [2021-08-29 08:25:23,947 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 08:25:23,948 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-08-29 08:25:23,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc021086/690a78b8f98b423c90aa2114deaa29ac/FLAG938b774c2 [2021-08-29 08:25:24,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc021086/690a78b8f98b423c90aa2114deaa29ac [2021-08-29 08:25:24,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 08:25:24,371 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 08:25:24,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 08:25:24,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 08:25:24,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 08:25:24,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:25:24" (1/1) ... [2021-08-29 08:25:24,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489189f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24, skipping insertion in model container [2021-08-29 08:25:24,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:25:24" (1/1) ... [2021-08-29 08:25:24,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 08:25:24,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 08:25:24,520 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_1252a.c[2154,2167] [2021-08-29 08:25:24,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:25:24,533 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 08:25:24,600 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_1252a.c[2154,2167] [2021-08-29 08:25:24,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 08:25:24,623 INFO L208 MainTranslator]: Completed translation [2021-08-29 08:25:24,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24 WrapperNode [2021-08-29 08:25:24,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 08:25:24,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 08:25:24,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 08:25:24,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 08:25:24,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24" (1/1) ... [2021-08-29 08:25:24,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24" (1/1) ... [2021-08-29 08:25:24,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 08:25:24,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 08:25:24,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 08:25:24,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 08:25:24,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24" (1/1) ... [2021-08-29 08:25:24,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24" (1/1) ... [2021-08-29 08:25:24,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24" (1/1) ... [2021-08-29 08:25:24,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24" (1/1) ... [2021-08-29 08:25:24,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24" (1/1) ... [2021-08-29 08:25:24,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24" (1/1) ... [2021-08-29 08:25:24,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24" (1/1) ... [2021-08-29 08:25:24,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 08:25:24,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 08:25:24,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 08:25:24,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 08:25:24,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24" (1/1) ... [2021-08-29 08:25:24,751 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 08:25:24,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 08:25:24,774 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) [2021-08-29 08:25:24,789 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 [2021-08-29 08:25:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-08-29 08:25:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 08:25:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 08:25:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-29 08:25:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 08:25:24,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 08:25:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 08:25:25,083 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 08:25:25,083 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-08-29 08:25:25,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:25:25 BoogieIcfgContainer [2021-08-29 08:25:25,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 08:25:25,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 08:25:25,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 08:25:25,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 08:25:25,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:25:24" (1/3) ... [2021-08-29 08:25:25,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd01676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:25:25, skipping insertion in model container [2021-08-29 08:25:25,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:25:24" (2/3) ... [2021-08-29 08:25:25,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd01676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:25:25, skipping insertion in model container [2021-08-29 08:25:25,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:25:25" (3/3) ... [2021-08-29 08:25:25,095 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2021-08-29 08:25:25,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 08:25:25,100 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 08:25:25,134 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 08:25:25,140 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 [2021-08-29 08:25:25,141 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 08:25:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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) [2021-08-29 08:25:25,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 08:25:25,158 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:25,159 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:25,160 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:25,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:25,165 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-08-29 08:25:25,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:25:25,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910677100] [2021-08-29 08:25:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:25,176 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:25:25,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:25:25,185 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) [2021-08-29 08:25:25,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 08:25:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:25,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-29 08:25:25,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:25:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:25,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:25:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:25,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:25:25,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910677100] [2021-08-29 08:25:25,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910677100] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:25,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:25,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-29 08:25:25,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175047740] [2021-08-29 08:25:25,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 08:25:25,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:25:25,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 08:25:25,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:25:25,443 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-29 08:25:25,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:25,597 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-08-29 08:25:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 08:25:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-08-29 08:25:25,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:25,606 INFO L225 Difference]: With dead ends: 62 [2021-08-29 08:25:25,606 INFO L226 Difference]: Without dead ends: 29 [2021-08-29 08:25:25,608 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.13ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 08:25:25,613 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.57ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128.18ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:25,615 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.57ms Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 128.18ms Time] [2021-08-29 08:25:25,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-08-29 08:25:25,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-08-29 08:25:25,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 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) [2021-08-29 08:25:25,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-08-29 08:25:25,650 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-08-29 08:25:25,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:25,650 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-08-29 08:25:25,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-08-29 08:25:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-08-29 08:25:25,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 08:25:25,651 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:25,651 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:25,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-29 08:25:25,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:25:25,857 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:25,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:25,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-08-29 08:25:25,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:25:25,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961705551] [2021-08-29 08:25:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:25,859 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:25:25,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:25:25,862 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) [2021-08-29 08:25:25,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 08:25:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:25,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 08:25:25,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:25:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:25,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:25:26,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:26,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:25:26,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961705551] [2021-08-29 08:25:26,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961705551] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:26,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:26,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-29 08:25:26,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395171928] [2021-08-29 08:25:26,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 08:25:26,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:25:26,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 08:25:26,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-29 08:25:26,029 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-08-29 08:25:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:26,634 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2021-08-29 08:25:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 08:25:26,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 [2021-08-29 08:25:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:26,636 INFO L225 Difference]: With dead ends: 68 [2021-08-29 08:25:26,636 INFO L226 Difference]: Without dead ends: 59 [2021-08-29 08:25:26,637 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 31.43ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-29 08:25:26,638 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 515.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.70ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 563.69ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:26,639 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 185 Unknown, 0 Unchecked, 2.70ms Time], IncrementalHoareTripleChecker [7 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 563.69ms Time] [2021-08-29 08:25:26,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-08-29 08:25:26,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2021-08-29 08:25:26,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2021-08-29 08:25:26,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-08-29 08:25:26,645 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-08-29 08:25:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:26,646 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-08-29 08:25:26,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2021-08-29 08:25:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-08-29 08:25:26,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 08:25:26,647 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:26,647 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:26,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-29 08:25:26,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:25:26,860 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:26,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:26,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2021-08-29 08:25:26,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:25:26,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113739135] [2021-08-29 08:25:26,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:26,862 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:25:26,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:25:26,863 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) [2021-08-29 08:25:26,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-29 08:25:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:26,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 08:25:26,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:25:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:27,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:25:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:27,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:25:27,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113739135] [2021-08-29 08:25:27,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113739135] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:27,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:27,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-29 08:25:27,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905976327] [2021-08-29 08:25:27,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 08:25:27,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:25:27,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 08:25:27,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-29 08:25:27,190 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-08-29 08:25:27,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:27,275 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2021-08-29 08:25:27,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 08:25:27,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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 14 [2021-08-29 08:25:27,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:27,277 INFO L225 Difference]: With dead ends: 52 [2021-08-29 08:25:27,277 INFO L226 Difference]: Without dead ends: 28 [2021-08-29 08:25:27,277 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 46.29ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 08:25:27,278 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 67.95ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:27,279 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 122 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 63 Unchecked, 67.95ms Time] [2021-08-29 08:25:27,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-08-29 08:25:27,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-08-29 08:25:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 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) [2021-08-29 08:25:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-08-29 08:25:27,282 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2021-08-29 08:25:27,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:27,283 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-08-29 08:25:27,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 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) [2021-08-29 08:25:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-08-29 08:25:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 08:25:27,283 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:27,284 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:27,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-29 08:25:27,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:25:27,494 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:27,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:27,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2021-08-29 08:25:27,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:25:27,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365698485] [2021-08-29 08:25:27,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:27,495 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:25:27,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:25:27,496 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 08:25:27,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-29 08:25:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:27,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-29 08:25:27,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:25:27,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:27,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:25:27,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:27,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:25:27,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365698485] [2021-08-29 08:25:27,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365698485] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:27,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:27,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-29 08:25:27,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226143680] [2021-08-29 08:25:27,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 08:25:27,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:25:27,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 08:25:27,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-29 08:25:27,652 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-08-29 08:25:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:27,933 INFO L93 Difference]: Finished difference Result 65 states and 77 transitions. [2021-08-29 08:25:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 08:25:27,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 16 [2021-08-29 08:25:27,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:27,934 INFO L225 Difference]: With dead ends: 65 [2021-08-29 08:25:27,935 INFO L226 Difference]: Without dead ends: 56 [2021-08-29 08:25:27,935 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 26.52ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-29 08:25:27,936 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.10ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 251.14ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:27,936 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 166 Unknown, 0 Unchecked, 3.10ms Time], IncrementalHoareTripleChecker [10 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 251.14ms Time] [2021-08-29 08:25:27,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-29 08:25:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2021-08-29 08:25:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 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) [2021-08-29 08:25:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2021-08-29 08:25:27,941 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 16 [2021-08-29 08:25:27,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:27,941 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2021-08-29 08:25:27,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-08-29 08:25:27,941 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2021-08-29 08:25:27,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-29 08:25:27,942 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:27,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:27,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-29 08:25:28,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:25:28,157 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:28,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:28,158 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2021-08-29 08:25:28,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:25:28,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390625842] [2021-08-29 08:25:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:28,159 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:25:28,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:25:28,160 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 08:25:28,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-29 08:25:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:28,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 08:25:28,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:25:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:28,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:25:28,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:28,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:25:28,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390625842] [2021-08-29 08:25:28,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390625842] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:28,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:28,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-29 08:25:28,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666715339] [2021-08-29 08:25:28,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 08:25:28,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:25:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 08:25:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 08:25:28,465 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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) [2021-08-29 08:25:28,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:28,572 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2021-08-29 08:25:28,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 08:25:28,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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) Word has length 18 [2021-08-29 08:25:28,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:28,573 INFO L225 Difference]: With dead ends: 40 [2021-08-29 08:25:28,573 INFO L226 Difference]: Without dead ends: 30 [2021-08-29 08:25:28,574 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.23ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 08:25:28,574 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.50ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:28,575 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 37 Unknown, 0 Unchecked, 0.28ms Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 101.50ms Time] [2021-08-29 08:25:28,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-29 08:25:28,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-29 08:25:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 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) [2021-08-29 08:25:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-08-29 08:25:28,578 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 18 [2021-08-29 08:25:28,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:28,579 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-08-29 08:25:28,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 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) [2021-08-29 08:25:28,579 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-08-29 08:25:28,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-29 08:25:28,579 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:28,579 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:28,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-29 08:25:28,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:25:28,780 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:28,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:28,781 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2021-08-29 08:25:28,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:25:28,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319460655] [2021-08-29 08:25:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:28,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:25:28,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:25:28,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 08:25:28,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-29 08:25:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:28,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 08:25:28,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:25:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:28,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:25:29,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:29,003 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:25:29,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319460655] [2021-08-29 08:25:29,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319460655] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:29,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:29,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-08-29 08:25:29,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128940267] [2021-08-29 08:25:29,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 08:25:29,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:25:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 08:25:29,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-29 08:25:29,005 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-08-29 08:25:29,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:29,247 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-08-29 08:25:29,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 08:25:29,248 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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 18 [2021-08-29 08:25:29,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:29,249 INFO L225 Difference]: With dead ends: 42 [2021-08-29 08:25:29,249 INFO L226 Difference]: Without dead ends: 39 [2021-08-29 08:25:29,249 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 77.30ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-08-29 08:25:29,250 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 191.40ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:29,250 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 180 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [2 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 191.40ms Time] [2021-08-29 08:25:29,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-08-29 08:25:29,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-08-29 08:25:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 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) [2021-08-29 08:25:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2021-08-29 08:25:29,255 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 18 [2021-08-29 08:25:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:29,255 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2021-08-29 08:25:29,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 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) [2021-08-29 08:25:29,256 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2021-08-29 08:25:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-29 08:25:29,256 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:29,256 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:29,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-29 08:25:29,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:25:29,467 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:29,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:29,467 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2021-08-29 08:25:29,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:25:29,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284439986] [2021-08-29 08:25:29,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:29,468 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:25:29,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:25:29,469 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 08:25:29,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-29 08:25:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:29,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-29 08:25:29,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:25:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:29,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:25:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:29,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:25:29,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284439986] [2021-08-29 08:25:29,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284439986] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:29,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:29,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-08-29 08:25:29,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966671744] [2021-08-29 08:25:29,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 08:25:29,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:25:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 08:25:29,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-29 08:25:29,783 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2021-08-29 08:25:29,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:29,883 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2021-08-29 08:25:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 08:25:29,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) Word has length 19 [2021-08-29 08:25:29,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:29,884 INFO L225 Difference]: With dead ends: 45 [2021-08-29 08:25:29,885 INFO L226 Difference]: Without dead ends: 27 [2021-08-29 08:25:29,885 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 77.23ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-29 08:25:29,886 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.58ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 72.65ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:29,886 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 101 Unknown, 0 Unchecked, 0.58ms Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 41 Unchecked, 72.65ms Time] [2021-08-29 08:25:29,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-29 08:25:29,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-08-29 08:25:29,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 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) [2021-08-29 08:25:29,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-08-29 08:25:29,889 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 19 [2021-08-29 08:25:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:29,889 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-08-29 08:25:29,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2021-08-29 08:25:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-08-29 08:25:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-29 08:25:29,890 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 08:25:29,890 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 08:25:29,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-29 08:25:30,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:25:30,104 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 08:25:30,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 08:25:30,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2021-08-29 08:25:30,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 08:25:30,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184901525] [2021-08-29 08:25:30,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 08:25:30,105 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 08:25:30,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 08:25:30,106 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 08:25:30,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-29 08:25:30,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 08:25:30,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-29 08:25:30,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 08:25:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:30,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 08:25:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 08:25:30,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 08:25:30,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184901525] [2021-08-29 08:25:30,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184901525] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 08:25:30,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 08:25:30,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 16 [2021-08-29 08:25:30,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807144285] [2021-08-29 08:25:30,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-29 08:25:30,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 08:25:30,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-29 08:25:30,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-08-29 08:25:30,724 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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) [2021-08-29 08:25:30,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 08:25:30,913 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-08-29 08:25:30,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 08:25:30,914 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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 22 [2021-08-29 08:25:30,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 08:25:30,914 INFO L225 Difference]: With dead ends: 27 [2021-08-29 08:25:30,914 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 08:25:30,914 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 297.57ms TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-08-29 08:25:30,915 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.32ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 100.37ms IncrementalHoareTripleChecker+Time [2021-08-29 08:25:30,915 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 226 Unknown, 0 Unchecked, 1.32ms Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 102 Unchecked, 100.37ms Time] [2021-08-29 08:25:30,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 08:25:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 08:25:30,916 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) [2021-08-29 08:25:30,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 08:25:30,917 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-08-29 08:25:30,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 08:25:30,917 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 08:25:30,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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) [2021-08-29 08:25:30,917 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 08:25:30,917 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 08:25:30,920 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 08:25:30,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-29 08:25:31,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 08:25:31,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 08:25:31,136 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:25:31,159 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:25:31,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:25:31,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:25:31,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:25:31,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:25:31,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:25:31,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 08:25:31,254 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 08:25:31,254 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 08:25:31,254 INFO L858 garLoopResultBuilder]: For program point L28-1(lines 28 33) no Hoare annotation was computed. [2021-08-29 08:25:31,254 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 33) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= ULTIMATE.start___fpclassify_double_~x .cse0) (= .cse0 ULTIMATE.start_fmax_double_~x) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y))) [2021-08-29 08:25:31,254 INFO L858 garLoopResultBuilder]: For program point L28-3(lines 25 50) no Hoare annotation was computed. [2021-08-29 08:25:31,254 INFO L858 garLoopResultBuilder]: For program point L28-5(lines 28 33) no Hoare annotation was computed. [2021-08-29 08:25:31,254 INFO L854 garLoopResultBuilder]: At program point L28-6(lines 28 33) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start___fpclassify_double_~x) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y)) [2021-08-29 08:25:31,254 INFO L858 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-08-29 08:25:31,254 INFO L858 garLoopResultBuilder]: For program point L28-7(lines 25 50) no Hoare annotation was computed. [2021-08-29 08:25:31,255 INFO L858 garLoopResultBuilder]: For program point L86-2(lines 86 89) no Hoare annotation was computed. [2021-08-29 08:25:31,255 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 49) no Hoare annotation was computed. [2021-08-29 08:25:31,255 INFO L858 garLoopResultBuilder]: For program point L45-1(lines 45 49) no Hoare annotation was computed. [2021-08-29 08:25:31,255 INFO L858 garLoopResultBuilder]: For program point L87(line 87) no Hoare annotation was computed. [2021-08-29 08:25:31,255 INFO L858 garLoopResultBuilder]: For program point L54(lines 54 55) no Hoare annotation was computed. [2021-08-29 08:25:31,255 INFO L854 garLoopResultBuilder]: At program point L71(lines 62 72) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_double_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short15| (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y)) [2021-08-29 08:25:31,255 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2021-08-29 08:25:31,255 INFO L858 garLoopResultBuilder]: For program point L38-1(lines 38 49) no Hoare annotation was computed. [2021-08-29 08:25:31,255 INFO L858 garLoopResultBuilder]: For program point L56(lines 56 57) no Hoare annotation was computed. [2021-08-29 08:25:31,255 INFO L858 garLoopResultBuilder]: For program point L65-1(lines 65 69) no Hoare annotation was computed. [2021-08-29 08:25:31,255 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 08:25:31,255 INFO L854 garLoopResultBuilder]: At program point L65-2(lines 65 69) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res|) |ULTIMATE.start_main_#t~short15| (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y)) [2021-08-29 08:25:31,255 INFO L858 garLoopResultBuilder]: For program point L65-3(lines 65 69) no Hoare annotation was computed. [2021-08-29 08:25:31,255 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 87) no Hoare annotation was computed. [2021-08-29 08:25:31,256 INFO L854 garLoopResultBuilder]: At program point L49(lines 25 50) the Hoare annotation is: (and (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (not (= |ULTIMATE.start___fpclassify_double_#res| (_ bv0 32))) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y)) [2021-08-29 08:25:31,256 INFO L854 garLoopResultBuilder]: At program point L49-1(lines 25 50) the Hoare annotation is: (and (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (not (= |ULTIMATE.start___fpclassify_double_#res| (_ bv0 32))) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y)) [2021-08-29 08:25:31,256 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2021-08-29 08:25:31,256 INFO L858 garLoopResultBuilder]: For program point L41-1(lines 41 49) no Hoare annotation was computed. [2021-08-29 08:25:31,256 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 08:25:31,256 INFO L861 garLoopResultBuilder]: At program point L91(lines 74 92) the Hoare annotation is: true [2021-08-29 08:25:31,256 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-08-29 08:25:31,256 INFO L858 garLoopResultBuilder]: For program point L59-2(line 59) no Hoare annotation was computed. [2021-08-29 08:25:31,256 INFO L854 garLoopResultBuilder]: At program point L59-3(lines 52 60) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res|) (= (fp.neg (_ +zero 11 53)) ULTIMATE.start_fmax_double_~x) (= (_ +zero 11 53) ULTIMATE.start_fmax_double_~y)) [2021-08-29 08:25:31,260 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 08:25:31,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 08:25:31 BoogieIcfgContainer [2021-08-29 08:25:31,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 08:25:31,274 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 08:25:31,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 08:25:31,275 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 08:25:31,275 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:25:25" (3/4) ... [2021-08-29 08:25:31,278 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 08:25:31,287 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-08-29 08:25:31,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-08-29 08:25:31,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-29 08:25:31,288 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 08:25:31,307 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x && !(\result == 0bv32)) && ~Pluszero~LONGDOUBLE() == y [2021-08-29 08:25:31,307 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~Pluszero~LONGDOUBLE() == \result && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == y [2021-08-29 08:25:31,308 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((~Pluszero~LONGDOUBLE() == \result && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == y [2021-08-29 08:25:31,308 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x && !(\result == 0bv32)) && ~Pluszero~LONGDOUBLE() == y [2021-08-29 08:25:31,308 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\result == 0bv32 && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == y [2021-08-29 08:25:31,322 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 08:25:31,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 08:25:31,323 INFO L158 Benchmark]: Toolchain (without parser) took 6952.23ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 37.0MB in the beginning and 34.8MB in the end (delta: 2.2MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2021-08-29 08:25:31,323 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 39.4MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:25:31,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.91ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 40.9MB in the end (delta: -4.1MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-08-29 08:25:31,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.18ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 39.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 08:25:31,324 INFO L158 Benchmark]: Boogie Preprocessor took 58.98ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 37.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 08:25:31,324 INFO L158 Benchmark]: RCFGBuilder took 342.86ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 37.4MB in the beginning and 51.3MB in the end (delta: -13.9MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2021-08-29 08:25:31,325 INFO L158 Benchmark]: TraceAbstraction took 6185.34ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 50.8MB in the beginning and 39.0MB in the end (delta: 11.8MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2021-08-29 08:25:31,326 INFO L158 Benchmark]: Witness Printer took 47.81ms. Allocated memory is still 86.0MB. Free memory was 38.4MB in the beginning and 34.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 08:25:31,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 39.4MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.91ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 40.9MB in the end (delta: -4.1MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.18ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 39.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.98ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 37.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 342.86ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 37.4MB in the beginning and 51.3MB in the end (delta: -13.9MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * TraceAbstraction took 6185.34ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 50.8MB in the beginning and 39.0MB in the end (delta: 11.8MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. * Witness Printer took 47.81ms. Allocated memory is still 86.0MB. Free memory was 38.4MB in the beginning and 34.8MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 87]: 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6127.23ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 13.55ms, AutomataDifference: 1843.32ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 121.03ms, InitialAbstractionConstructionTime: 8.47ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 191 SdHoareTripleChecker+Valid, 1476.88ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 191 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1273.68ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 206 IncrementalHoareTripleChecker+Unchecked, 591 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 834 IncrementalHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 0 mSDtfsCounter, 834 mSolverCounterSat, 11.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 581.72ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 46.49ms AutomataMinimizationTime, 8 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 16 NumberOfFragments, 89 HoareAnnotationTreeSize, 8 FomulaSimplifications, 47 FormulaSimplificationTreeSizeReduction, 49.69ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 65.52ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 93.48ms SsaConstructionTime, 271.88ms SatisfiabilityAnalysisTime, 1774.89ms InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 240 ConstructedInterpolants, 32 QuantifiedInterpolants, 1020 SizeOfPredicates, 38 NumberOfNonLiveVariables, 505 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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: 25]: Loop Invariant Derived loop invariant: (~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x && !(\result == 0bv32)) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: (~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x && !(\result == 0bv32)) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: ((\result == 0bv32 && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: ((((~Pluszero~LONGDOUBLE() == \result && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == res) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == x && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == y - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == \result && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && ~Pluszero~LONGDOUBLE() == y RESULT: Ultimate proved your program to be correct! [2021-08-29 08:25:31,388 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...