./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0680b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_0680b.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 f89b3bbad42595f1a07c6d5289633d238961847556efb64250e94df2ad8dde4b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:56:11,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:56:11,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:56:11,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:56:11,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:56:11,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:56:11,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:56:11,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:56:11,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:56:11,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:56:11,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:56:11,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:56:11,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:56:11,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:56:11,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:56:11,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:56:11,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:56:11,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:56:11,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:56:11,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:56:11,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:56:11,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:56:11,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:56:11,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:56:11,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:56:11,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:56:11,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:56:11,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:56:11,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:56:11,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:56:11,865 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:56:11,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:56:11,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:56:11,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:56:11,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:56:11,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:56:11,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:56:11,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:56:11,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:56:11,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:56:11,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:56:11,870 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 11:56:11,896 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:56:11,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:56:11,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:56:11,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:56:11,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:56:11,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:56:11,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:56:11,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:56:11,899 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:56:11,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:56:11,900 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:56:11,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 11:56:11,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:56:11,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:56:11,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:56:11,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:56:11,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:56:11,901 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:56:11,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:56:11,901 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:56:11,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:56:11,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:56:11,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:56:11,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:56:11,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:56:11,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:56:11,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:56:11,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:56:11,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 11:56:11,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 11:56:11,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:56:11,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:56:11,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:56:11,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:56:11,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f89b3bbad42595f1a07c6d5289633d238961847556efb64250e94df2ad8dde4b [2021-12-21 11:56:12,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:56:12,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:56:12,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:56:12,162 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:56:12,164 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:56:12,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0680b.c [2021-12-21 11:56:12,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c733386ff/7bf1433aa661457ab257ce518f75b9f8/FLAG11c0da6d1 [2021-12-21 11:56:12,595 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:56:12,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0680b.c [2021-12-21 11:56:12,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c733386ff/7bf1433aa661457ab257ce518f75b9f8/FLAG11c0da6d1 [2021-12-21 11:56:12,616 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c733386ff/7bf1433aa661457ab257ce518f75b9f8 [2021-12-21 11:56:12,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:56:12,619 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:56:12,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:56:12,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:56:12,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:56:12,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:56:12" (1/1) ... [2021-12-21 11:56:12,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef71f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12, skipping insertion in model container [2021-12-21 11:56:12,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:56:12" (1/1) ... [2021-12-21 11:56:12,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:56:12,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:56:12,820 WARN L230 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_0680b.c[6162,6175] [2021-12-21 11:56:12,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:56:12,834 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:56:12,889 WARN L230 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_0680b.c[6162,6175] [2021-12-21 11:56:12,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:56:12,906 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:56:12,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12 WrapperNode [2021-12-21 11:56:12,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:56:12,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:56:12,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:56:12,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:56:12,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12" (1/1) ... [2021-12-21 11:56:12,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12" (1/1) ... [2021-12-21 11:56:12,950 INFO L137 Inliner]: procedures = 19, calls = 87, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 225 [2021-12-21 11:56:12,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:56:12,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:56:12,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:56:12,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:56:12,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12" (1/1) ... [2021-12-21 11:56:12,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12" (1/1) ... [2021-12-21 11:56:12,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12" (1/1) ... [2021-12-21 11:56:12,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12" (1/1) ... [2021-12-21 11:56:12,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12" (1/1) ... [2021-12-21 11:56:12,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12" (1/1) ... [2021-12-21 11:56:12,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12" (1/1) ... [2021-12-21 11:56:12,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:56:12,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:56:12,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:56:12,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:56:12,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12" (1/1) ... [2021-12-21 11:56:12,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:56:12,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:56:13,007 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) [2021-12-21 11:56:13,012 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 [2021-12-21 11:56:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:56:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 11:56:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 11:56:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-21 11:56:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 11:56:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-12-21 11:56:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-12-21 11:56:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-21 11:56:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2021-12-21 11:56:13,035 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2021-12-21 11:56:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:56:13,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:56:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 11:56:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-12-21 11:56:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 11:56:13,150 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:56:13,151 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:56:13,425 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:56:13,437 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:56:13,437 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-21 11:56:13,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:56:13 BoogieIcfgContainer [2021-12-21 11:56:13,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:56:13,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:56:13,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:56:13,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:56:13,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:56:12" (1/3) ... [2021-12-21 11:56:13,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42dcca2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:56:13, skipping insertion in model container [2021-12-21 11:56:13,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:12" (2/3) ... [2021-12-21 11:56:13,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42dcca2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:56:13, skipping insertion in model container [2021-12-21 11:56:13,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:56:13" (3/3) ... [2021-12-21 11:56:13,450 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0680b.c [2021-12-21 11:56:13,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:56:13,454 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:56:13,505 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:56:13,513 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-12-21 11:56:13,513 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:56:13,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 84 states have (on average 1.6666666666666667) internal successors, (140), 85 states have internal predecessors, (140), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:56:13,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-21 11:56:13,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:56:13,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:56:13,545 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:56:13,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:56:13,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1713470270, now seen corresponding path program 1 times [2021-12-21 11:56:13,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:56:13,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349065020] [2021-12-21 11:56:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:56:13,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:56:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:56:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:56:13,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:56:13,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349065020] [2021-12-21 11:56:13,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349065020] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:56:13,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:56:13,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:56:13,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695733700] [2021-12-21 11:56:13,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:56:13,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 11:56:13,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:56:13,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 11:56:13,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:56:13,802 INFO L87 Difference]: Start difference. First operand has 92 states, 84 states have (on average 1.6666666666666667) internal successors, (140), 85 states have internal predecessors, (140), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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) [2021-12-21 11:56:13,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:56:13,872 INFO L93 Difference]: Finished difference Result 182 states and 298 transitions. [2021-12-21 11:56:13,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 11:56:13,874 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 [2021-12-21 11:56:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:56:13,886 INFO L225 Difference]: With dead ends: 182 [2021-12-21 11:56:13,886 INFO L226 Difference]: Without dead ends: 89 [2021-12-21 11:56:13,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:56:13,895 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 11:56:13,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 11:56:13,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-21 11:56:13,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-21 11:56:13,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 82 states have internal predecessors, (120), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:56:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 128 transitions. [2021-12-21 11:56:13,942 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 128 transitions. Word has length 10 [2021-12-21 11:56:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:56:13,942 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 128 transitions. [2021-12-21 11:56:13,942 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) [2021-12-21 11:56:13,942 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 128 transitions. [2021-12-21 11:56:13,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 11:56:13,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:56:13,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:56:13,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 11:56:13,943 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:56:13,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:56:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1701355047, now seen corresponding path program 1 times [2021-12-21 11:56:13,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:56:13,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600720886] [2021-12-21 11:56:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:56:13,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:56:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:56:14,091 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 11:56:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:56:14,222 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 11:56:14,222 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 11:56:14,224 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 11:56:14,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 11:56:14,229 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-21 11:56:14,231 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 11:56:14,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:56:14 BoogieIcfgContainer [2021-12-21 11:56:14,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 11:56:14,267 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 11:56:14,267 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 11:56:14,267 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 11:56:14,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:56:13" (3/4) ... [2021-12-21 11:56:14,269 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 11:56:14,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 11:56:14,270 INFO L158 Benchmark]: Toolchain (without parser) took 1650.15ms. Allocated memory is still 104.9MB. Free memory was 64.6MB in the beginning and 74.1MB in the end (delta: -9.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:56:14,270 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:56:14,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.57ms. Allocated memory is still 104.9MB. Free memory was 64.4MB in the beginning and 50.0MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-21 11:56:14,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.10ms. Allocated memory is still 104.9MB. Free memory was 50.0MB in the beginning and 47.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:56:14,271 INFO L158 Benchmark]: Boogie Preprocessor took 24.52ms. Allocated memory is still 104.9MB. Free memory was 47.6MB in the beginning and 45.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:56:14,271 INFO L158 Benchmark]: RCFGBuilder took 463.04ms. Allocated memory is still 104.9MB. Free memory was 45.2MB in the beginning and 66.1MB in the end (delta: -20.9MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2021-12-21 11:56:14,272 INFO L158 Benchmark]: TraceAbstraction took 826.80ms. Allocated memory is still 104.9MB. Free memory was 66.0MB in the beginning and 74.1MB in the end (delta: -8.1MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2021-12-21 11:56:14,272 INFO L158 Benchmark]: Witness Printer took 2.24ms. Allocated memory is still 104.9MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:56:14,273 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 104.9MB. Free memory is still 82.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.57ms. Allocated memory is still 104.9MB. Free memory was 64.4MB in the beginning and 50.0MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.10ms. Allocated memory is still 104.9MB. Free memory was 50.0MB in the beginning and 47.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.52ms. Allocated memory is still 104.9MB. Free memory was 47.6MB in the beginning and 45.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 463.04ms. Allocated memory is still 104.9MB. Free memory was 45.2MB in the beginning and 66.1MB in the end (delta: -20.9MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 826.80ms. Allocated memory is still 104.9MB. Free memory was 66.0MB in the beginning and 74.1MB in the end (delta: -8.1MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * Witness Printer took 2.24ms. Allocated memory is still 104.9MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 258]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 253, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 257. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L253] double x = -0.0; [L254] double y = 0.0; [L255] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=0, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=0, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, hy=-1, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, ly=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=0, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, hy=-1, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, ly=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=0, zero_atan2=0] [L255] RET, EXPR __ieee754_atan2(y, x) [L255] double res = __ieee754_atan2(y, x); [L257] COND TRUE res != pi VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=0, zero_atan2=0] [L258] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=0, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 92 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 131 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 131 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-21 11:56:14,309 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_0680b.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 f89b3bbad42595f1a07c6d5289633d238961847556efb64250e94df2ad8dde4b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:56:16,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:56:16,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:56:16,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:56:16,065 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:56:16,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:56:16,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:56:16,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:56:16,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:56:16,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:56:16,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:56:16,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:56:16,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:56:16,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:56:16,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:56:16,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:56:16,086 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:56:16,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:56:16,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:56:16,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:56:16,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:56:16,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:56:16,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:56:16,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:56:16,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:56:16,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:56:16,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:56:16,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:56:16,102 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:56:16,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:56:16,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:56:16,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:56:16,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:56:16,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:56:16,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:56:16,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:56:16,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:56:16,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:56:16,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:56:16,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:56:16,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:56:16,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 11:56:16,137 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:56:16,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:56:16,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:56:16,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:56:16,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:56:16,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:56:16,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:56:16,141 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:56:16,141 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:56:16,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:56:16,141 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:56:16,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:56:16,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:56:16,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:56:16,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:56:16,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:56:16,142 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 11:56:16,142 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 11:56:16,143 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 11:56:16,143 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:56:16,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:56:16,143 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:56:16,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:56:16,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:56:16,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:56:16,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:56:16,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:56:16,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:56:16,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:56:16,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:56:16,144 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 11:56:16,144 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 11:56:16,145 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:56:16,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:56:16,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:56:16,145 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:56:16,145 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 11:56:16,145 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f89b3bbad42595f1a07c6d5289633d238961847556efb64250e94df2ad8dde4b [2021-12-21 11:56:16,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:56:16,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:56:16,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:56:16,475 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:56:16,476 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:56:16,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0680b.c [2021-12-21 11:56:16,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddcea70b7/cec67efd40c2422192a733723cc75ce0/FLAGb4d7f9933 [2021-12-21 11:56:16,857 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:56:16,864 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0680b.c [2021-12-21 11:56:16,869 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddcea70b7/cec67efd40c2422192a733723cc75ce0/FLAGb4d7f9933 [2021-12-21 11:56:17,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddcea70b7/cec67efd40c2422192a733723cc75ce0 [2021-12-21 11:56:17,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:56:17,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:56:17,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:56:17,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:56:17,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:56:17,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:56:17" (1/1) ... [2021-12-21 11:56:17,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db6eaae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17, skipping insertion in model container [2021-12-21 11:56:17,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:56:17" (1/1) ... [2021-12-21 11:56:17,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:56:17,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:56:17,479 WARN L230 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_0680b.c[6162,6175] [2021-12-21 11:56:17,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:56:17,490 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:56:17,571 WARN L230 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_0680b.c[6162,6175] [2021-12-21 11:56:17,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:56:17,593 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:56:17,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17 WrapperNode [2021-12-21 11:56:17,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:56:17,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:56:17,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:56:17,597 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:56:17,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17" (1/1) ... [2021-12-21 11:56:17,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17" (1/1) ... [2021-12-21 11:56:17,631 INFO L137 Inliner]: procedures = 22, calls = 87, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 226 [2021-12-21 11:56:17,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:56:17,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:56:17,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:56:17,635 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:56:17,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17" (1/1) ... [2021-12-21 11:56:17,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17" (1/1) ... [2021-12-21 11:56:17,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17" (1/1) ... [2021-12-21 11:56:17,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17" (1/1) ... [2021-12-21 11:56:17,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17" (1/1) ... [2021-12-21 11:56:17,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17" (1/1) ... [2021-12-21 11:56:17,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17" (1/1) ... [2021-12-21 11:56:17,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:56:17,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:56:17,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:56:17,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:56:17,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17" (1/1) ... [2021-12-21 11:56:17,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:56:17,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:56:17,737 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) [2021-12-21 11:56:17,742 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 [2021-12-21 11:56:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:56:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-21 11:56:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-21 11:56:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 11:56:17,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 11:56:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-12-21 11:56:17,777 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-12-21 11:56:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-12-21 11:56:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2021-12-21 11:56:17,777 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2021-12-21 11:56:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-21 11:56:17,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:56:17,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:56:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-21 11:56:17,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 11:56:17,848 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:56:17,849 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:56:38,645 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:56:38,650 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:56:38,651 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-21 11:56:38,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:56:38 BoogieIcfgContainer [2021-12-21 11:56:38,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:56:38,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:56:38,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:56:38,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:56:38,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:56:17" (1/3) ... [2021-12-21 11:56:38,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52555ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:56:38, skipping insertion in model container [2021-12-21 11:56:38,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:56:17" (2/3) ... [2021-12-21 11:56:38,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52555ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:56:38, skipping insertion in model container [2021-12-21 11:56:38,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:56:38" (3/3) ... [2021-12-21 11:56:38,666 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0680b.c [2021-12-21 11:56:38,670 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:56:38,670 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:56:38,710 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:56:38,716 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-12-21 11:56:38,717 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:56:38,751 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 84 states have (on average 1.6666666666666667) internal successors, (140), 85 states have internal predecessors, (140), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:56:38,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-21 11:56:38,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:56:38,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:56:38,772 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:56:38,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:56:38,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1713470270, now seen corresponding path program 1 times [2021-12-21 11:56:38,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:56:38,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1556383708] [2021-12-21 11:56:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:56:38,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:56:38,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:56:38,815 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) [2021-12-21 11:56:38,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 11:56:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:56:39,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 11:56:39,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:56:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:56:39,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:56:39,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:56:39,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1556383708] [2021-12-21 11:56:39,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1556383708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:56:39,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:56:39,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:56:39,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998309125] [2021-12-21 11:56:39,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:56:39,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 11:56:39,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:56:39,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 11:56:39,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:56:39,393 INFO L87 Difference]: Start difference. First operand has 92 states, 84 states have (on average 1.6666666666666667) internal successors, (140), 85 states have internal predecessors, (140), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) 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) [2021-12-21 11:56:39,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:56:39,414 INFO L93 Difference]: Finished difference Result 182 states and 298 transitions. [2021-12-21 11:56:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 11:56:39,416 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 [2021-12-21 11:56:39,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:56:39,421 INFO L225 Difference]: With dead ends: 182 [2021-12-21 11:56:39,421 INFO L226 Difference]: Without dead ends: 89 [2021-12-21 11:56:39,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:56:39,426 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 11:56:39,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 11:56:39,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-21 11:56:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-21 11:56:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 82 states have (on average 1.4634146341463414) internal successors, (120), 82 states have internal predecessors, (120), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:56:39,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 128 transitions. [2021-12-21 11:56:39,454 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 128 transitions. Word has length 10 [2021-12-21 11:56:39,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:56:39,455 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 128 transitions. [2021-12-21 11:56:39,455 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) [2021-12-21 11:56:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 128 transitions. [2021-12-21 11:56:39,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 11:56:39,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:56:39,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:56:39,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 11:56:39,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:56:39,684 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:56:39,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:56:39,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1701355047, now seen corresponding path program 1 times [2021-12-21 11:56:39,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:56:39,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556916060] [2021-12-21 11:56:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:56:39,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:56:39,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:56:39,687 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) [2021-12-21 11:56:39,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 11:56:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:56:40,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-21 11:56:40,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:56:40,714 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2021-12-21 11:56:42,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2021-12-21 11:56:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:56:45,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:56:45,168 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:56:45,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556916060] [2021-12-21 11:56:45,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556916060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:56:45,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:56:45,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 11:56:45,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134754091] [2021-12-21 11:56:45,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:56:45,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 11:56:45,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:56:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 11:56:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 11:56:45,170 INFO L87 Difference]: Start difference. First operand 89 states and 128 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2021-12-21 11:56:45,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:56:45,905 INFO L93 Difference]: Finished difference Result 93 states and 131 transitions. [2021-12-21 11:56:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 11:56:45,906 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 [2021-12-21 11:56:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:56:45,907 INFO L225 Difference]: With dead ends: 93 [2021-12-21 11:56:45,907 INFO L226 Difference]: Without dead ends: 89 [2021-12-21 11:56:45,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 11:56:45,909 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 2 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 11:56:45,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 670 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 64 Unchecked, 0.3s Time] [2021-12-21 11:56:45,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-21 11:56:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-21 11:56:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 82 states have (on average 1.451219512195122) internal successors, (119), 82 states have internal predecessors, (119), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:56:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 127 transitions. [2021-12-21 11:56:45,918 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 127 transitions. Word has length 12 [2021-12-21 11:56:45,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:56:45,919 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 127 transitions. [2021-12-21 11:56:45,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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) [2021-12-21 11:56:45,919 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 127 transitions. [2021-12-21 11:56:45,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 11:56:45,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:56:45,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:56:45,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-21 11:56:46,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:56:46,135 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:56:46,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:56:46,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1174160583, now seen corresponding path program 1 times [2021-12-21 11:56:46,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:56:46,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1844713223] [2021-12-21 11:56:46,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:56:46,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:56:46,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:56:46,138 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) [2021-12-21 11:56:46,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-21 11:56:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:56:46,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 11:56:46,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:56:48,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:56:48,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:56:48,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:56:48,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1844713223] [2021-12-21 11:56:48,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1844713223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:56:48,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:56:48,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 11:56:48,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106077079] [2021-12-21 11:56:48,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:56:48,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 11:56:48,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:56:48,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 11:56:48,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 11:56:48,108 INFO L87 Difference]: Start difference. First operand 89 states and 127 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-12-21 11:56:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:56:48,377 INFO L93 Difference]: Finished difference Result 98 states and 134 transitions. [2021-12-21 11:56:48,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 11:56:48,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-12-21 11:56:48,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:56:48,385 INFO L225 Difference]: With dead ends: 98 [2021-12-21 11:56:48,386 INFO L226 Difference]: Without dead ends: 93 [2021-12-21 11:56:48,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 11:56:48,387 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 63 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 11:56:48,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 294 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2021-12-21 11:56:48,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-21 11:56:48,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2021-12-21 11:56:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 82 states have (on average 1.4390243902439024) internal successors, (118), 82 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:56:48,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 126 transitions. [2021-12-21 11:56:48,394 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 126 transitions. Word has length 17 [2021-12-21 11:56:48,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:56:48,395 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 126 transitions. [2021-12-21 11:56:48,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-12-21 11:56:48,395 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 126 transitions. [2021-12-21 11:56:48,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 11:56:48,397 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:56:48,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:56:48,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-21 11:56:48,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:56:48,599 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:56:48,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:56:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1176007625, now seen corresponding path program 1 times [2021-12-21 11:56:48,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:56:48,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179353681] [2021-12-21 11:56:48,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:56:48,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:56:48,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:56:48,601 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) [2021-12-21 11:56:48,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-21 11:56:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:56:49,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 11:56:49,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:56:49,451 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-21 11:56:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:56:51,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:56:51,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:56:51,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179353681] [2021-12-21 11:56:51,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179353681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:56:51,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:56:51,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 11:56:51,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638471393] [2021-12-21 11:56:51,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:56:51,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 11:56:51,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:56:51,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 11:56:51,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 11:56:51,174 INFO L87 Difference]: Start difference. First operand 89 states and 126 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-12-21 11:56:51,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:56:51,586 INFO L93 Difference]: Finished difference Result 163 states and 229 transitions. [2021-12-21 11:56:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 11:56:51,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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 17 [2021-12-21 11:56:51,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:56:51,588 INFO L225 Difference]: With dead ends: 163 [2021-12-21 11:56:51,588 INFO L226 Difference]: Without dead ends: 93 [2021-12-21 11:56:51,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 11:56:51,590 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 7 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 11:56:51,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 471 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 15 Unchecked, 0.2s Time] [2021-12-21 11:56:51,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-21 11:56:51,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 89. [2021-12-21 11:56:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 82 states have (on average 1.4268292682926829) internal successors, (117), 82 states have internal predecessors, (117), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:56:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 125 transitions. [2021-12-21 11:56:51,596 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 125 transitions. Word has length 17 [2021-12-21 11:56:51,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:56:51,596 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 125 transitions. [2021-12-21 11:56:51,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2021-12-21 11:56:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 125 transitions. [2021-12-21 11:56:51,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 11:56:51,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:56:51,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:56:51,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-21 11:56:51,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:56:51,801 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:56:51,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:56:51,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1166643321, now seen corresponding path program 1 times [2021-12-21 11:56:51,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:56:51,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718578827] [2021-12-21 11:56:51,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:56:51,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:56:51,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:56:51,805 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) [2021-12-21 11:56:51,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-21 11:56:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:56:52,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 11:56:52,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:56:55,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:56:55,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:56:55,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:56:55,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718578827] [2021-12-21 11:56:55,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718578827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:56:55,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:56:55,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 11:56:55,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944117434] [2021-12-21 11:56:55,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:56:55,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 11:56:55,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:56:55,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 11:56:55,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 11:56:55,844 INFO L87 Difference]: Start difference. First operand 89 states and 125 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2021-12-21 11:56:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:56:56,855 INFO L93 Difference]: Finished difference Result 95 states and 131 transitions. [2021-12-21 11:56:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 11:56:56,871 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 17 [2021-12-21 11:56:56,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:56:56,872 INFO L225 Difference]: With dead ends: 95 [2021-12-21 11:56:56,872 INFO L226 Difference]: Without dead ends: 91 [2021-12-21 11:56:56,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 11:56:56,873 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 2 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 11:56:56,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 551 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 27 Unchecked, 0.7s Time] [2021-12-21 11:56:56,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-21 11:56:56,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-12-21 11:56:56,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 84 states have (on average 1.4166666666666667) internal successors, (119), 84 states have internal predecessors, (119), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:56:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 127 transitions. [2021-12-21 11:56:56,878 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 127 transitions. Word has length 17 [2021-12-21 11:56:56,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:56:56,878 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 127 transitions. [2021-12-21 11:56:56,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2021-12-21 11:56:56,879 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 127 transitions. [2021-12-21 11:56:56,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 11:56:56,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:56:56,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:56:56,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-21 11:56:57,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:56:57,086 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:56:57,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:56:57,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1223901623, now seen corresponding path program 1 times [2021-12-21 11:56:57,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:56:57,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073984672] [2021-12-21 11:56:57,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:56:57,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:56:57,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:56:57,089 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) [2021-12-21 11:56:57,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-21 11:56:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:56:57,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 11:56:57,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:56:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:56:59,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:56:59,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:56:59,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073984672] [2021-12-21 11:56:59,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073984672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:56:59,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:56:59,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 11:56:59,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203601956] [2021-12-21 11:56:59,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:56:59,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 11:56:59,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:56:59,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 11:56:59,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 11:56:59,650 INFO L87 Difference]: Start difference. First operand 91 states and 127 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-12-21 11:57:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:57:01,002 INFO L93 Difference]: Finished difference Result 164 states and 232 transitions. [2021-12-21 11:57:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 11:57:01,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2021-12-21 11:57:01,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:57:01,006 INFO L225 Difference]: With dead ends: 164 [2021-12-21 11:57:01,006 INFO L226 Difference]: Without dead ends: 89 [2021-12-21 11:57:01,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-21 11:57:01,008 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 3 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 11:57:01,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 549 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 26 Unchecked, 1.0s Time] [2021-12-21 11:57:01,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-21 11:57:01,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-21 11:57:01,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 82 states have (on average 1.4024390243902438) internal successors, (115), 82 states have internal predecessors, (115), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:57:01,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 123 transitions. [2021-12-21 11:57:01,019 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 123 transitions. Word has length 17 [2021-12-21 11:57:01,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:57:01,019 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 123 transitions. [2021-12-21 11:57:01,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-12-21 11:57:01,020 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 123 transitions. [2021-12-21 11:57:01,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 11:57:01,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:57:01,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:57:01,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-21 11:57:01,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:57:01,231 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:57:01,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:57:01,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1808977731, now seen corresponding path program 1 times [2021-12-21 11:57:01,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:57:01,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456146152] [2021-12-21 11:57:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:57:01,238 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:57:01,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:57:01,239 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:57:01,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-21 11:57:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:57:01,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 11:57:01,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:57:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 11:57:06,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:57:06,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:57:06,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1456146152] [2021-12-21 11:57:06,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1456146152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:57:06,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:57:06,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 11:57:06,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35170415] [2021-12-21 11:57:06,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:57:06,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 11:57:06,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:57:06,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 11:57:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 11:57:06,833 INFO L87 Difference]: Start difference. First operand 89 states and 123 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-12-21 11:57:18,142 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.70s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 11:57:21,268 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 11:57:23,519 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-21 11:57:25,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 11:57:28,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 11:57:31,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers []