./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1230.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 858612fdb9071600e83746a6e504d4acbbe533c1 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_1230.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 858612fdb9071600e83746a6e504d4acbbe533c1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:41:54,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 01:41:54,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 01:41:54,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 01:41:54,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 01:41:54,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 01:41:54,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 01:41:54,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 01:41:54,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 01:41:54,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 01:41:54,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 01:41:54,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 01:41:54,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 01:41:54,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 01:41:54,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 01:41:54,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 01:41:54,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 01:41:54,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 01:41:54,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 01:41:54,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 01:41:54,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 01:41:54,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 01:41:54,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 01:41:54,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 01:41:54,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 01:41:54,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 01:41:54,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 01:41:54,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 01:41:54,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 01:41:54,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 01:41:54,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:41:54,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:41:54,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:41:54,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:41:54,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:41:54,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:41:54,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:41:54,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:41:54,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:41:54,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:41:54,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:41:54,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 01:41:54,988 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:41:54,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:41:54,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:41:54,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:41:54,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:41:54,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:41:54,991 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:41:54,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:41:54,991 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:41:54,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 01:41:54,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:41:54,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:41:54,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:41:54,993 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:41:54,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:41:54,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:41:54,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:41:54,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:41:54,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:41:54,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:41:54,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:41:54,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:41:54,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:41:54,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:41:54,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:41:54,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:41:54,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 01:41:54,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 01:41:54,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:41:54,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:41:54,994 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2021-08-26 01:41:55,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:41:55,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:41:55,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:41:55,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:41:55,294 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:41:55,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-08-26 01:41:55,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e9231ab/520055192ceb41ccbf7e3199eea17257/FLAG41a39fdd1 [2021-08-26 01:41:55,723 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:41:55,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-08-26 01:41:55,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e9231ab/520055192ceb41ccbf7e3199eea17257/FLAG41a39fdd1 [2021-08-26 01:41:55,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e9231ab/520055192ceb41ccbf7e3199eea17257 [2021-08-26 01:41:55,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:41:55,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:41:55,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:41:55,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:41:55,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:41:55,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:41:55" (1/1) ... [2021-08-26 01:41:55,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414c5516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55, skipping insertion in model container [2021-08-26 01:41:55,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:41:55" (1/1) ... [2021-08-26 01:41:55,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:41:55,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:41:55,917 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_1230.c[1667,1680] [2021-08-26 01:41:55,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:41:55,934 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:41:55,986 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_1230.c[1667,1680] [2021-08-26 01:41:55,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:41:55,998 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:41:55,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55 WrapperNode [2021-08-26 01:41:56,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:41:56,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:41:56,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:41:56,001 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:41:56,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55" (1/1) ... [2021-08-26 01:41:56,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55" (1/1) ... [2021-08-26 01:41:56,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:41:56,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:41:56,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:41:56,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:41:56,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55" (1/1) ... [2021-08-26 01:41:56,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55" (1/1) ... [2021-08-26 01:41:56,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55" (1/1) ... [2021-08-26 01:41:56,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55" (1/1) ... [2021-08-26 01:41:56,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55" (1/1) ... [2021-08-26 01:41:56,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55" (1/1) ... [2021-08-26 01:41:56,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55" (1/1) ... [2021-08-26 01:41:56,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:41:56,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:41:56,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:41:56,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:41:56,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55" (1/1) ... [2021-08-26 01:41:56,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:41:56,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:41:56,131 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) [2021-08-26 01:41:56,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 01:41:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 01:41:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:41:56,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-08-26 01:41:56,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:41:56,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:41:56,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-26 01:41:56,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:41:56,446 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:41:56,446 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-08-26 01:41:56,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:41:56 BoogieIcfgContainer [2021-08-26 01:41:56,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:41:56,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:41:56,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:41:56,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:41:56,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:41:55" (1/3) ... [2021-08-26 01:41:56,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aaaef1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:41:56, skipping insertion in model container [2021-08-26 01:41:56,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:41:55" (2/3) ... [2021-08-26 01:41:56,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aaaef1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:41:56, skipping insertion in model container [2021-08-26 01:41:56,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:41:56" (3/3) ... [2021-08-26 01:41:56,452 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2021-08-26 01:41:56,455 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:41:56,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:41:56,481 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:41:56,485 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 01:41:56,485 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:41:56,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:41:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 01:41:56,521 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:41:56,521 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:41:56,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:41:56,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:41:56,525 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-08-26 01:41:56,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:41:56,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119800394] [2021-08-26 01:41:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:41:56,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:41:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:41:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:41:56,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:41:56,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119800394] [2021-08-26 01:41:56,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119800394] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:41:56,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:41:56,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-26 01:41:56,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681211298] [2021-08-26 01:41:56,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:41:56,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:41:56,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:41:56,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:41:56,641 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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) [2021-08-26 01:41:56,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:41:56,651 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-08-26 01:41:56,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:41:56,652 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 [2021-08-26 01:41:56,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:41:56,657 INFO L225 Difference]: With dead ends: 54 [2021-08-26 01:41:56,657 INFO L226 Difference]: Without dead ends: 25 [2021-08-26 01:41:56,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:41:56,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-26 01:41:56,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-08-26 01:41:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:41:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-08-26 01:41:56,677 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-08-26 01:41:56,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:41:56,677 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-08-26 01:41:56,677 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) [2021-08-26 01:41:56,677 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-08-26 01:41:56,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 01:41:56,677 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:41:56,678 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:41:56,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-26 01:41:56,678 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:41:56,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:41:56,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-08-26 01:41:56,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:41:56,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503487314] [2021-08-26 01:41:56,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:41:56,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:41:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:41:56,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:41:56,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:41:56,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503487314] [2021-08-26 01:41:56,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503487314] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:41:56,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:41:56,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 01:41:56,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674535209] [2021-08-26 01:41:56,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 01:41:56,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:41:56,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 01:41:56,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 01:41:56,800 INFO L87 Difference]: Start difference. First operand 25 states and 35 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) [2021-08-26 01:41:56,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:41:56,857 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-08-26 01:41:56,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 01:41:56,857 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 [2021-08-26 01:41:56,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:41:56,858 INFO L225 Difference]: With dead ends: 41 [2021-08-26 01:41:56,858 INFO L226 Difference]: Without dead ends: 36 [2021-08-26 01:41:56,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 01:41:56,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-08-26 01:41:56,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-08-26 01:41:56,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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) [2021-08-26 01:41:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-08-26 01:41:56,862 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-08-26 01:41:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:41:56,863 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-08-26 01:41:56,863 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) [2021-08-26 01:41:56,863 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-08-26 01:41:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-26 01:41:56,863 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:41:56,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:41:56,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-26 01:41:56,864 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:41:56,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:41:56,865 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2021-08-26 01:41:56,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:41:56,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915521675] [2021-08-26 01:41:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:41:56,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:41:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:41:56,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:41:56,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:41:56,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915521675] [2021-08-26 01:41:56,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915521675] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:41:56,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:41:56,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 01:41:56,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165449235] [2021-08-26 01:41:56,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 01:41:56,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:41:56,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 01:41:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 01:41:56,943 INFO L87 Difference]: Start difference. First operand 27 states and 37 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) [2021-08-26 01:41:56,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:41:56,994 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-08-26 01:41:56,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 01:41:56,995 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 [2021-08-26 01:41:56,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:41:56,995 INFO L225 Difference]: With dead ends: 43 [2021-08-26 01:41:56,995 INFO L226 Difference]: Without dead ends: 38 [2021-08-26 01:41:56,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 01:41:56,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-26 01:41:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-08-26 01:41:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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) [2021-08-26 01:41:56,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-08-26 01:41:56,998 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2021-08-26 01:41:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:41:56,999 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-08-26 01:41:56,999 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) [2021-08-26 01:41:56,999 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-08-26 01:41:56,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-26 01:41:56,999 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:41:56,999 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:41:56,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-26 01:41:57,000 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:41:57,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:41:57,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2021-08-26 01:41:57,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:41:57,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24493144] [2021-08-26 01:41:57,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:41:57,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:41:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:41:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:41:57,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:41:57,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24493144] [2021-08-26 01:41:57,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24493144] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:41:57,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:41:57,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 01:41:57,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402578409] [2021-08-26 01:41:57,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 01:41:57,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:41:57,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 01:41:57,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 01:41:57,046 INFO L87 Difference]: Start difference. First operand 27 states and 37 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) [2021-08-26 01:41:57,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:41:57,075 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-08-26 01:41:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 01:41:57,076 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 [2021-08-26 01:41:57,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:41:57,076 INFO L225 Difference]: With dead ends: 45 [2021-08-26 01:41:57,076 INFO L226 Difference]: Without dead ends: 40 [2021-08-26 01:41:57,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 01:41:57,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-08-26 01:41:57,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2021-08-26 01:41:57,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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) [2021-08-26 01:41:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-08-26 01:41:57,079 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2021-08-26 01:41:57,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:41:57,080 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-08-26 01:41:57,080 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) [2021-08-26 01:41:57,080 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-08-26 01:41:57,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 01:41:57,080 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:41:57,080 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:41:57,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-26 01:41:57,080 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:41:57,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:41:57,081 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2021-08-26 01:41:57,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:41:57,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269529353] [2021-08-26 01:41:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:41:57,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:41:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:41:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:41:57,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 01:41:57,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269529353] [2021-08-26 01:41:57,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269529353] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 01:41:57,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:41:57,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 01:41:57,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190674417] [2021-08-26 01:41:57,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 01:41:57,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 01:41:57,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 01:41:57,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 01:41:57,128 INFO L87 Difference]: Start difference. First operand 27 states and 37 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) [2021-08-26 01:41:57,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:41:57,156 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-08-26 01:41:57,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 01:41:57,157 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 [2021-08-26 01:41:57,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:41:57,157 INFO L225 Difference]: With dead ends: 43 [2021-08-26 01:41:57,157 INFO L226 Difference]: Without dead ends: 38 [2021-08-26 01:41:57,157 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 01:41:57,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-26 01:41:57,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-08-26 01:41:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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) [2021-08-26 01:41:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-08-26 01:41:57,160 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2021-08-26 01:41:57,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:41:57,160 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-08-26 01:41:57,160 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) [2021-08-26 01:41:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-08-26 01:41:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 01:41:57,161 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:41:57,161 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:41:57,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-26 01:41:57,161 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:41:57,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:41:57,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-08-26 01:41:57,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 01:41:57,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909459510] [2021-08-26 01:41:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:41:57,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 01:41:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:41:57,177 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 01:41:57,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 01:41:57,207 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 01:41:57,207 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 01:41:57,208 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:41:57,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-26 01:41:57,213 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:41:57,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:41:57 BoogieIcfgContainer [2021-08-26 01:41:57,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:41:57,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:41:57,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:41:57,228 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:41:57,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:41:56" (3/4) ... [2021-08-26 01:41:57,230 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-26 01:41:57,230 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:41:57,231 INFO L168 Benchmark]: Toolchain (without parser) took 1482.56 ms. Allocated memory was 48.2 MB in the beginning and 83.9 MB in the end (delta: 35.7 MB). Free memory was 23.8 MB in the beginning and 39.6 MB in the end (delta: -15.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:41:57,232 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory was 30.4 MB in the beginning and 30.4 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:41:57,232 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.04 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.6 MB in the beginning and 41.6 MB in the end (delta: -17.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-08-26 01:41:57,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.77 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 39.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:41:57,233 INFO L168 Benchmark]: Boogie Preprocessor took 36.72 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 38.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:41:57,233 INFO L168 Benchmark]: RCFGBuilder took 367.36 ms. Allocated memory is still 58.7 MB. Free memory was 38.3 MB in the beginning and 32.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-08-26 01:41:57,234 INFO L168 Benchmark]: TraceAbstraction took 779.14 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 32.2 MB in the beginning and 39.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2021-08-26 01:41:57,234 INFO L168 Benchmark]: Witness Printer took 2.43 ms. Allocated memory is still 83.9 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:41:57,236 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory was 30.4 MB in the beginning and 30.4 MB in the end (delta: 27.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 251.04 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.6 MB in the beginning and 41.6 MB in the end (delta: -17.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.77 ms. Allocated memory is still 58.7 MB. Free memory was 41.6 MB in the beginning and 39.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.72 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 38.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 367.36 ms. Allocated memory is still 58.7 MB. Free memory was 38.3 MB in the beginning and 32.6 MB in the end (delta: 5.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 779.14 ms. Allocated memory was 58.7 MB in the beginning and 83.9 MB in the end (delta: 25.2 MB). Free memory was 32.2 MB in the beginning and 39.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * Witness Printer took 2.43 ms. Allocated memory is still 83.9 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 68]: 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 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L65] double res = fmin_double(x, y); [L18] return x != x; [L67] COND TRUE !isnan_double(res) [L68] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 731.8ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 30.7ms, AutomataDifference: 200.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 106.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.5ms AutomataMinimizationTime, 5 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.3ms SsaConstructionTime, 101.0ms SatisfiabilityAnalysisTime, 201.8ms 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 [2021-08-26 01:41:57,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 01:41:58,982 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-26 01:41:59,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 01:41:59,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 01:41:59,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 01:41:59,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 01:41:59,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 01:41:59,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 01:41:59,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 01:41:59,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 01:41:59,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 01:41:59,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 01:41:59,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 01:41:59,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-26 01:41:59,104 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 01:41:59,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 01:41:59,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 01:41:59,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 01:41:59,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 01:41:59,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 01:41:59,107 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 01:41:59,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 01:41:59,107 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 01:41:59,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 01:41:59,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 01:41:59,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 01:41:59,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 01:41:59,108 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 01:41:59,108 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-26 01:41:59,108 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-26 01:41:59,108 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 01:41:59,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 01:41:59,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 01:41:59,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 01:41:59,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 01:41:59,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 01:41:59,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 01:41:59,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:41:59,109 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 01:41:59,109 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 01:41:59,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 01:41:59,109 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-26 01:41:59,110 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-26 01:41:59,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 01:41:59,110 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 01:41:59,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-26 01:41:59,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858612fdb9071600e83746a6e504d4acbbe533c1 [2021-08-26 01:41:59,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 01:41:59,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 01:41:59,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 01:41:59,398 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 01:41:59,399 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 01:41:59,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-08-26 01:41:59,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9caffd71b/13cb859886a747f3ade7a8e89698247d/FLAGf21649bd2 [2021-08-26 01:41:59,796 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 01:41:59,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-08-26 01:41:59,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9caffd71b/13cb859886a747f3ade7a8e89698247d/FLAGf21649bd2 [2021-08-26 01:42:00,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9caffd71b/13cb859886a747f3ade7a8e89698247d [2021-08-26 01:42:00,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 01:42:00,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 01:42:00,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 01:42:00,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 01:42:00,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 01:42:00,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:42:00" (1/1) ... [2021-08-26 01:42:00,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@252e4a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00, skipping insertion in model container [2021-08-26 01:42:00,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 01:42:00" (1/1) ... [2021-08-26 01:42:00,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 01:42:00,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 01:42:00,313 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_1230.c[1667,1680] [2021-08-26 01:42:00,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:42:00,323 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 01:42:00,338 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_1230.c[1667,1680] [2021-08-26 01:42:00,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 01:42:00,386 INFO L208 MainTranslator]: Completed translation [2021-08-26 01:42:00,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00 WrapperNode [2021-08-26 01:42:00,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 01:42:00,393 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 01:42:00,393 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 01:42:00,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 01:42:00,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00" (1/1) ... [2021-08-26 01:42:00,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00" (1/1) ... [2021-08-26 01:42:00,420 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 01:42:00,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 01:42:00,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 01:42:00,421 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 01:42:00,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00" (1/1) ... [2021-08-26 01:42:00,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00" (1/1) ... [2021-08-26 01:42:00,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00" (1/1) ... [2021-08-26 01:42:00,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00" (1/1) ... [2021-08-26 01:42:00,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00" (1/1) ... [2021-08-26 01:42:00,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00" (1/1) ... [2021-08-26 01:42:00,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00" (1/1) ... [2021-08-26 01:42:00,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 01:42:00,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 01:42:00,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 01:42:00,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 01:42:00,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00" (1/1) ... [2021-08-26 01:42:00,468 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 01:42:00,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 01:42:00,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 01:42:00,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 01:42:00,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-08-26 01:42:00,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-26 01:42:00,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 01:42:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-26 01:42:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 01:42:00,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 01:42:00,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-26 01:42:00,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 01:42:00,766 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-08-26 01:42:00,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:42:00 BoogieIcfgContainer [2021-08-26 01:42:00,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 01:42:00,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 01:42:00,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 01:42:00,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 01:42:00,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 01:42:00" (1/3) ... [2021-08-26 01:42:00,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7ee4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:42:00, skipping insertion in model container [2021-08-26 01:42:00,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 01:42:00" (2/3) ... [2021-08-26 01:42:00,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7ee4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 01:42:00, skipping insertion in model container [2021-08-26 01:42:00,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:42:00" (3/3) ... [2021-08-26 01:42:00,787 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2021-08-26 01:42:00,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 01:42:00,790 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-26 01:42:00,817 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 01:42:00,821 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 01:42:00,822 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-26 01:42:00,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:42:00,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-26 01:42:00,833 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:42:00,834 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:42:00,834 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:42:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:42:00,838 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-08-26 01:42:00,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:42:00,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017712924] [2021-08-26 01:42:00,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:42:00,845 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:42:00,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:42:00,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:42:00,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-26 01:42:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:42:00,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-26 01:42:00,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:42:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:00,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:42:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:01,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:42:01,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017712924] [2021-08-26 01:42:01,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017712924] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:42:01,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:42:01,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-26 01:42:01,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725418124] [2021-08-26 01:42:01,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-26 01:42:01,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:42:01,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-26 01:42:01,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:42:01,056 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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) [2021-08-26 01:42:01,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:42:01,075 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-08-26 01:42:01,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-26 01:42:01,076 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 [2021-08-26 01:42:01,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:42:01,082 INFO L225 Difference]: With dead ends: 54 [2021-08-26 01:42:01,082 INFO L226 Difference]: Without dead ends: 25 [2021-08-26 01:42:01,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-26 01:42:01,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-08-26 01:42:01,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-08-26 01:42:01,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:42:01,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-08-26 01:42:01,134 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-08-26 01:42:01,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:42:01,134 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-08-26 01:42:01,134 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) [2021-08-26 01:42:01,134 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-08-26 01:42:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-26 01:42:01,135 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:42:01,135 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:42:01,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-26 01:42:01,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:42:01,336 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:42:01,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:42:01,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-08-26 01:42:01,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:42:01,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436298204] [2021-08-26 01:42:01,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:42:01,338 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:42:01,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:42:01,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:42:01,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-26 01:42:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:42:01,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 01:42:01,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:42:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:01,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:42:01,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:01,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:42:01,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436298204] [2021-08-26 01:42:01,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436298204] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:42:01,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:42:01,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-26 01:42:01,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751170969] [2021-08-26 01:42:01,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 01:42:01,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:42:01,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 01:42:01,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-26 01:42:01,557 INFO L87 Difference]: Start difference. First operand 25 states and 35 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) [2021-08-26 01:42:01,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:42:01,631 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2021-08-26 01:42:01,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 01:42:01,633 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 [2021-08-26 01:42:01,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:42:01,634 INFO L225 Difference]: With dead ends: 52 [2021-08-26 01:42:01,634 INFO L226 Difference]: Without dead ends: 47 [2021-08-26 01:42:01,636 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 01:42:01,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-26 01:42:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-08-26 01:42:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 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) [2021-08-26 01:42:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-08-26 01:42:01,645 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-08-26 01:42:01,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:42:01,647 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-08-26 01:42:01,647 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) [2021-08-26 01:42:01,647 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-08-26 01:42:01,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-26 01:42:01,648 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:42:01,648 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:42:01,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-26 01:42:01,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:42:01,859 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:42:01,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:42:01,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-08-26 01:42:01,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:42:01,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1864690346] [2021-08-26 01:42:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:42:01,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:42:01,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:42:01,870 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-26 01:42:01,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-26 01:42:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:42:01,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 01:42:01,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:42:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:02,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:42:02,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:02,223 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:42:02,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1864690346] [2021-08-26 01:42:02,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1864690346] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:42:02,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:42:02,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-08-26 01:42:02,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827775464] [2021-08-26 01:42:02,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 01:42:02,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:42:02,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 01:42:02,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-26 01:42:02,225 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:42:02,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:42:02,885 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-08-26 01:42:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 01:42:02,885 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 [2021-08-26 01:42:02,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:42:02,886 INFO L225 Difference]: With dead ends: 36 [2021-08-26 01:42:02,886 INFO L226 Difference]: Without dead ends: 27 [2021-08-26 01:42:02,886 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 234.0ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-08-26 01:42:02,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-08-26 01:42:02,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-08-26 01:42:02,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:42:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-08-26 01:42:02,889 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-08-26 01:42:02,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:42:02,889 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-08-26 01:42:02,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:42:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-08-26 01:42:02,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-26 01:42:02,890 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:42:02,890 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:42:02,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-26 01:42:03,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:42:03,099 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:42:03,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:42:03,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2021-08-26 01:42:03,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:42:03,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816219333] [2021-08-26 01:42:03,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:42:03,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:42:03,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:42:03,101 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) [2021-08-26 01:42:03,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-26 01:42:03,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:42:03,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 01:42:03,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:42:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:03,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:42:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:03,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:42:03,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816219333] [2021-08-26 01:42:03,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816219333] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:42:03,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:42:03,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-26 01:42:03,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800017476] [2021-08-26 01:42:03,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-26 01:42:03,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:42:03,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-26 01:42:03,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-26 01:42:03,386 INFO L87 Difference]: Start difference. First operand 25 states and 33 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) [2021-08-26 01:42:03,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:42:03,467 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-08-26 01:42:03,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 01:42:03,469 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 [2021-08-26 01:42:03,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:42:03,470 INFO L225 Difference]: With dead ends: 52 [2021-08-26 01:42:03,470 INFO L226 Difference]: Without dead ends: 47 [2021-08-26 01:42:03,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-08-26 01:42:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-26 01:42:03,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-08-26 01:42:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:42:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-08-26 01:42:03,481 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2021-08-26 01:42:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:42:03,482 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-08-26 01:42:03,482 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) [2021-08-26 01:42:03,482 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-08-26 01:42:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-26 01:42:03,483 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:42:03,483 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:42:03,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-26 01:42:03,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:42:03,692 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:42:03,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:42:03,692 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2021-08-26 01:42:03,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:42:03,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418772932] [2021-08-26 01:42:03,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:42:03,693 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:42:03,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:42:03,694 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) [2021-08-26 01:42:03,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-26 01:42:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:42:03,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-26 01:42:03,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:42:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:03,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:42:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:04,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:42:04,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418772932] [2021-08-26 01:42:04,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418772932] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:42:04,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:42:04,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-08-26 01:42:04,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557902010] [2021-08-26 01:42:04,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-26 01:42:04,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:42:04,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-26 01:42:04,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-26 01:42:04,148 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:42:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:42:04,632 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-08-26 01:42:04,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-26 01:42:04,633 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 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 [2021-08-26 01:42:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:42:04,633 INFO L225 Difference]: With dead ends: 32 [2021-08-26 01:42:04,633 INFO L226 Difference]: Without dead ends: 23 [2021-08-26 01:42:04,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 355.7ms TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-08-26 01:42:04,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-08-26 01:42:04,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-08-26 01:42:04,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:42:04,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-08-26 01:42:04,636 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2021-08-26 01:42:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:42:04,636 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-08-26 01:42:04,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:42:04,636 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-08-26 01:42:04,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-08-26 01:42:04,636 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 01:42:04,636 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 01:42:04,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-08-26 01:42:04,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:42:04,837 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 01:42:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 01:42:04,837 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2021-08-26 01:42:04,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-26 01:42:04,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844648488] [2021-08-26 01:42:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 01:42:04,838 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-26 01:42:04,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-26 01:42:04,840 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) [2021-08-26 01:42:04,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-26 01:42:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 01:42:04,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-26 01:42:04,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 01:42:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:05,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-26 01:42:05,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 01:42:05,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-26 01:42:05,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844648488] [2021-08-26 01:42:05,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844648488] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-26 01:42:05,196 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-26 01:42:05,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-08-26 01:42:05,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608309455] [2021-08-26 01:42:05,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-26 01:42:05,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-26 01:42:05,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-26 01:42:05,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-08-26 01:42:05,197 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) [2021-08-26 01:42:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 01:42:05,429 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-08-26 01:42:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-26 01:42:05,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) Word has length 19 [2021-08-26 01:42:05,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 01:42:05,429 INFO L225 Difference]: With dead ends: 23 [2021-08-26 01:42:05,429 INFO L226 Difference]: Without dead ends: 0 [2021-08-26 01:42:05,429 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 226.3ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-08-26 01:42:05,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-26 01:42:05,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-26 01:42:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 01:42:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-26 01:42:05,430 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-08-26 01:42:05,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 01:42:05,430 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-26 01:42:05,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) [2021-08-26 01:42:05,430 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-26 01:42:05,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-26 01:42:05,432 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 01:42:05,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-08-26 01:42:05,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-26 01:42:05,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-26 01:42:05,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:42:05,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:42:05,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:42:05,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:42:05,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:42:05,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:42:05,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-26 01:42:05,887 INFO L857 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2021-08-26 01:42:05,887 INFO L857 garLoopResultBuilder]: For program point L52-2(line 52) no Hoare annotation was computed. [2021-08-26 01:42:05,887 INFO L853 garLoopResultBuilder]: At program point L52-3(lines 46 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_#res| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2021-08-26 01:42:05,887 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2021-08-26 01:42:05,887 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-26 01:42:05,887 INFO L857 garLoopResultBuilder]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2021-08-26 01:42:05,887 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-26 01:42:05,887 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-26 01:42:05,888 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 68) no Hoare annotation was computed. [2021-08-26 01:42:05,888 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 50) no Hoare annotation was computed. [2021-08-26 01:42:05,888 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-26 01:42:05,888 INFO L857 garLoopResultBuilder]: For program point L67(lines 67 70) no Hoare annotation was computed. [2021-08-26 01:42:05,888 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2021-08-26 01:42:05,888 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2021-08-26 01:42:05,888 INFO L857 garLoopResultBuilder]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2021-08-26 01:42:05,888 INFO L853 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_#res| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2021-08-26 01:42:05,888 INFO L857 garLoopResultBuilder]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2021-08-26 01:42:05,888 INFO L853 garLoopResultBuilder]: At program point L22-6(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2021-08-26 01:42:05,888 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-08-26 01:42:05,888 INFO L857 garLoopResultBuilder]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2021-08-26 01:42:05,888 INFO L853 garLoopResultBuilder]: At program point L43(lines 19 44) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2021-08-26 01:42:05,888 INFO L853 garLoopResultBuilder]: At program point L43-1(lines 19 44) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)))) (or (and .cse0 (not (= |ULTIMATE.start___fpclassify_double_#res| (_ bv0 32)))) (and .cse0 (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))))) [2021-08-26 01:42:05,889 INFO L860 garLoopResultBuilder]: At program point L72(lines 55 73) the Hoare annotation is: true [2021-08-26 01:42:05,889 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-08-26 01:42:05,889 INFO L857 garLoopResultBuilder]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2021-08-26 01:42:05,889 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-08-26 01:42:05,889 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 43) no Hoare annotation was computed. [2021-08-26 01:42:05,889 INFO L857 garLoopResultBuilder]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2021-08-26 01:42:05,891 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 01:42:05,899 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:05,900 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:05,917 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:05,918 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:05,920 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:05,920 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:05,921 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:05,921 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:05,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 01:42:05 BoogieIcfgContainer [2021-08-26 01:42:05,922 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 01:42:05,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 01:42:05,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 01:42:05,923 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 01:42:05,923 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 01:42:00" (3/4) ... [2021-08-26 01:42:05,926 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-26 01:42:05,935 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-08-26 01:42:05,948 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-26 01:42:05,949 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-26 01:42:05,949 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-26 01:42:05,977 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-08-26 01:42:05,977 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-08-26 01:42:05,977 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(y, y) && !(\result == 0bv32)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) [2021-08-26 01:42:06,007 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 01:42:06,007 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 01:42:06,009 INFO L168 Benchmark]: Toolchain (without parser) took 5814.87 ms. Allocated memory was 81.8 MB in the beginning and 111.1 MB in the end (delta: 29.4 MB). Free memory was 58.4 MB in the beginning and 61.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2021-08-26 01:42:06,009 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 54.5 MB. Free memory was 35.4 MB in the beginning and 35.3 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:42:06,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.06 ms. Allocated memory is still 81.8 MB. Free memory was 58.2 MB in the beginning and 65.2 MB in the end (delta: -7.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-08-26 01:42:06,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.63 ms. Allocated memory is still 81.8 MB. Free memory was 64.9 MB in the beginning and 63.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:42:06,011 INFO L168 Benchmark]: Boogie Preprocessor took 29.57 ms. Allocated memory is still 81.8 MB. Free memory was 63.3 MB in the beginning and 61.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 01:42:06,011 INFO L168 Benchmark]: RCFGBuilder took 316.59 ms. Allocated memory is still 81.8 MB. Free memory was 61.6 MB in the beginning and 42.6 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-08-26 01:42:06,011 INFO L168 Benchmark]: TraceAbstraction took 5139.73 ms. Allocated memory was 81.8 MB in the beginning and 111.1 MB in the end (delta: 29.4 MB). Free memory was 63.3 MB in the beginning and 64.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. [2021-08-26 01:42:06,011 INFO L168 Benchmark]: Witness Printer took 85.09 ms. Allocated memory is still 111.1 MB. Free memory was 64.5 MB in the beginning and 61.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 01:42:06,013 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 54.5 MB. Free memory was 35.4 MB in the beginning and 35.3 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 192.06 ms. Allocated memory is still 81.8 MB. Free memory was 58.2 MB in the beginning and 65.2 MB in the end (delta: -7.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.63 ms. Allocated memory is still 81.8 MB. Free memory was 64.9 MB in the beginning and 63.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.57 ms. Allocated memory is still 81.8 MB. Free memory was 63.3 MB in the beginning and 61.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 316.59 ms. Allocated memory is still 81.8 MB. Free memory was 61.6 MB in the beginning and 42.6 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5139.73 ms. Allocated memory was 81.8 MB in the beginning and 111.1 MB in the end (delta: 29.4 MB). Free memory was 63.3 MB in the beginning and 64.5 MB in the end (delta: -1.1 MB). Peak memory consumption was 27.9 MB. Max. memory is 16.1 GB. * Witness Printer took 85.09 ms. Allocated memory is still 111.1 MB. Free memory was 64.5 MB in the beginning and 61.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 68]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5075.3ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 8.1ms, AutomataDifference: 1594.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 252.3ms, InitialAbstractionConstructionTime: 6.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 182 SDtfs, 126 SDslu, 523 SDs, 0 SdLazy, 132 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 915.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 874.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 66.1ms AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 80 HoareAnnotationTreeSize, 7 FomulaSimplifications, 190 FormulaSimplificationTreeSizeReduction, 96.1ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 51 FormulaSimplificationTreeSizeReductionInter, 150.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 66.5ms SsaConstructionTime, 231.0ms SatisfiabilityAnalysisTime, 1267.3ms InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 538 SizeOfPredicates, 32 NumberOfNonLiveVariables, 367 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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: 18]: Loop Invariant [2021-08-26 01:42:06,020 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:06,021 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:06,021 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:06,021 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(y, y) && !(\result == 0bv32)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 46]: Loop Invariant [2021-08-26 01:42:06,025 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:06,025 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:06,031 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-08-26 01:42:06,031 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) RESULT: Ultimate proved your program to be correct! [2021-08-26 01:42:06,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...