./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_1232a.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 f5978e6794574f24e5282dc6c0759b72c8b7ad9dd0acf1cc3c9d6f2352537904 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 14:13:02,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 14:13:02,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 14:13:02,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 14:13:02,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 14:13:02,841 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 14:13:02,843 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 14:13:02,844 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 14:13:02,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 14:13:02,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 14:13:02,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 14:13:02,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 14:13:02,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 14:13:02,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 14:13:02,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 14:13:02,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 14:13:02,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 14:13:02,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 14:13:02,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 14:13:02,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 14:13:02,853 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 14:13:02,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 14:13:02,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 14:13:02,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 14:13:02,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 14:13:02,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 14:13:02,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 14:13:02,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 14:13:02,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 14:13:02,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 14:13:02,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 14:13:02,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 14:13:02,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 14:13:02,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 14:13:02,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 14:13:02,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 14:13:02,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 14:13:02,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 14:13:02,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 14:13:02,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 14:13:02,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 14:13:02,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 14:13:02,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 14:13:02,882 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 14:13:02,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 14:13:02,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 14:13:02,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 14:13:02,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 14:13:02,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 14:13:02,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 14:13:02,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 14:13:02,888 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 14:13:02,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 14:13:02,888 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 14:13:02,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 14:13:02,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 14:13:02,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 14:13:02,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 14:13:02,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 14:13:02,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 14:13:02,889 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 14:13:02,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 14:13:02,889 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 14:13:02,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 14:13:02,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 14:13:02,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 14:13:02,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 14:13:02,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:13:02,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 14:13:02,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 14:13:02,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 14:13:02,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 14:13:02,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 14:13:02,891 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 14:13:02,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 14:13:02,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 14:13:02,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5978e6794574f24e5282dc6c0759b72c8b7ad9dd0acf1cc3c9d6f2352537904 [2022-07-19 14:13:03,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 14:13:03,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 14:13:03,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 14:13:03,091 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 14:13:03,091 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 14:13:03,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2022-07-19 14:13:03,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b0df11e/b56d6c71a8ef405788475365a7c877eb/FLAG6668c6f2e [2022-07-19 14:13:03,436 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 14:13:03,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2022-07-19 14:13:03,441 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b0df11e/b56d6c71a8ef405788475365a7c877eb/FLAG6668c6f2e [2022-07-19 14:13:03,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b0df11e/b56d6c71a8ef405788475365a7c877eb [2022-07-19 14:13:03,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 14:13:03,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 14:13:03,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 14:13:03,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 14:13:03,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 14:13:03,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:13:03" (1/1) ... [2022-07-19 14:13:03,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69075645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:03, skipping insertion in model container [2022-07-19 14:13:03,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:13:03" (1/1) ... [2022-07-19 14:13:03,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 14:13:03,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 14:13:04,082 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_1232a.c[1957,1970] [2022-07-19 14:13:04,085 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:13:04,091 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 14:13:04,119 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_1232a.c[1957,1970] [2022-07-19 14:13:04,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:13:04,132 INFO L208 MainTranslator]: Completed translation [2022-07-19 14:13:04,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:04 WrapperNode [2022-07-19 14:13:04,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 14:13:04,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 14:13:04,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 14:13:04,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 14:13:04,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:04" (1/1) ... [2022-07-19 14:13:04,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:04" (1/1) ... [2022-07-19 14:13:04,171 INFO L137 Inliner]: procedures = 19, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2022-07-19 14:13:04,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 14:13:04,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 14:13:04,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 14:13:04,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 14:13:04,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:04" (1/1) ... [2022-07-19 14:13:04,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:04" (1/1) ... [2022-07-19 14:13:04,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:04" (1/1) ... [2022-07-19 14:13:04,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:04" (1/1) ... [2022-07-19 14:13:04,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:04" (1/1) ... [2022-07-19 14:13:04,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:04" (1/1) ... [2022-07-19 14:13:04,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:04" (1/1) ... [2022-07-19 14:13:04,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 14:13:04,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 14:13:04,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 14:13:04,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 14:13:04,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:04" (1/1) ... [2022-07-19 14:13:04,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:13:04,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:13:04,227 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) [2022-07-19 14:13:04,229 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 [2022-07-19 14:13:04,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 14:13:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 14:13:04,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 14:13:04,271 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-07-19 14:13:04,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-07-19 14:13:04,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-19 14:13:04,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 14:13:04,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 14:13:04,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 14:13:04,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 14:13:04,347 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 14:13:04,348 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 14:13:04,490 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 14:13:04,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 14:13:04,495 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 14:13:04,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:13:04 BoogieIcfgContainer [2022-07-19 14:13:04,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 14:13:04,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 14:13:04,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 14:13:04,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 14:13:04,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 02:13:03" (1/3) ... [2022-07-19 14:13:04,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d24a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:13:04, skipping insertion in model container [2022-07-19 14:13:04,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:04" (2/3) ... [2022-07-19 14:13:04,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74d24a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:13:04, skipping insertion in model container [2022-07-19 14:13:04,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:13:04" (3/3) ... [2022-07-19 14:13:04,507 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2022-07-19 14:13:04,517 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 14:13:04,518 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 14:13:04,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 14:13:04,581 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@70f108f5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31ca3e54 [2022-07-19 14:13:04,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 14:13:04,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 14:13:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-19 14:13:04,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:04,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:04,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:04,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:04,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1634587165, now seen corresponding path program 1 times [2022-07-19 14:13:04,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:13:04,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774752882] [2022-07-19 14:13:04,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:04,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:13:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:04,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:13:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:13:04,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:13:04,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774752882] [2022-07-19 14:13:04,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774752882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:04,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:04,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 14:13:04,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496181009] [2022-07-19 14:13:04,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:04,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 14:13:04,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:13:04,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 14:13:04,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 14:13:04,789 INFO L87 Difference]: Start difference. First operand has 31 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:04,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:04,830 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2022-07-19 14:13:04,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 14:13:04,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-19 14:13:04,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:04,839 INFO L225 Difference]: With dead ends: 59 [2022-07-19 14:13:04,839 INFO L226 Difference]: Without dead ends: 28 [2022-07-19 14:13:04,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 14:13:04,845 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:04,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:13:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-19 14:13:04,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-19 14:13:04,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 14:13:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-07-19 14:13:04,876 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2022-07-19 14:13:04,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:04,876 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-07-19 14:13:04,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:04,877 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-07-19 14:13:04,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 14:13:04,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:04,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:04,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 14:13:04,880 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:04,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:04,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1992797582, now seen corresponding path program 1 times [2022-07-19 14:13:04,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:13:04,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138661705] [2022-07-19 14:13:04,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:04,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:13:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:13:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:13:05,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:13:05,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138661705] [2022-07-19 14:13:05,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138661705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:05,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:05,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 14:13:05,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011527163] [2022-07-19 14:13:05,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:05,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 14:13:05,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:13:05,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 14:13:05,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 14:13:05,023 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:05,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:05,058 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2022-07-19 14:13:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 14:13:05,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-19 14:13:05,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:05,060 INFO L225 Difference]: With dead ends: 41 [2022-07-19 14:13:05,060 INFO L226 Difference]: Without dead ends: 32 [2022-07-19 14:13:05,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 14:13:05,065 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:05,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 118 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:13:05,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-19 14:13:05,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-07-19 14:13:05,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 14:13:05,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-07-19 14:13:05,074 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 15 [2022-07-19 14:13:05,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:05,075 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-07-19 14:13:05,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:05,076 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-07-19 14:13:05,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-19 14:13:05,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:05,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:05,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 14:13:05,080 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:05,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:05,081 INFO L85 PathProgramCache]: Analyzing trace with hash -118167546, now seen corresponding path program 1 times [2022-07-19 14:13:05,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:13:05,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082885068] [2022-07-19 14:13:05,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:05,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:13:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:05,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:13:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:13:05,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:13:05,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082885068] [2022-07-19 14:13:05,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082885068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:05,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:05,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 14:13:05,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580631458] [2022-07-19 14:13:05,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:05,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 14:13:05,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:13:05,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 14:13:05,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 14:13:05,165 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:05,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:05,209 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-07-19 14:13:05,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 14:13:05,210 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-19 14:13:05,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:05,211 INFO L225 Difference]: With dead ends: 45 [2022-07-19 14:13:05,211 INFO L226 Difference]: Without dead ends: 36 [2022-07-19 14:13:05,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 14:13:05,215 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:05,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 134 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:13:05,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-19 14:13:05,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-07-19 14:13:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 14:13:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-07-19 14:13:05,225 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 16 [2022-07-19 14:13:05,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:05,226 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-07-19 14:13:05,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:05,226 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-07-19 14:13:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-19 14:13:05,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:05,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:05,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 14:13:05,228 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:05,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:05,229 INFO L85 PathProgramCache]: Analyzing trace with hash -774061834, now seen corresponding path program 1 times [2022-07-19 14:13:05,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:13:05,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851334816] [2022-07-19 14:13:05,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:05,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:13:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:05,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:13:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:13:05,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:13:05,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851334816] [2022-07-19 14:13:05,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851334816] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:05,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:05,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 14:13:05,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648862350] [2022-07-19 14:13:05,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:05,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 14:13:05,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:13:05,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 14:13:05,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 14:13:05,301 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:05,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:05,322 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-07-19 14:13:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 14:13:05,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-19 14:13:05,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:05,323 INFO L225 Difference]: With dead ends: 45 [2022-07-19 14:13:05,323 INFO L226 Difference]: Without dead ends: 36 [2022-07-19 14:13:05,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 14:13:05,324 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:05,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 134 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:13:05,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-19 14:13:05,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-07-19 14:13:05,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 14:13:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-07-19 14:13:05,329 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 17 [2022-07-19 14:13:05,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:05,329 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-07-19 14:13:05,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:05,329 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-07-19 14:13:05,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 14:13:05,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:05,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:05,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 14:13:05,331 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:05,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:05,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1728168458, now seen corresponding path program 1 times [2022-07-19 14:13:05,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:13:05,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467353885] [2022-07-19 14:13:05,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:05,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:13:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 14:13:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:13:05,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:13:05,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467353885] [2022-07-19 14:13:05,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467353885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:05,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:05,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 14:13:05,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142514185] [2022-07-19 14:13:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:05,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 14:13:05,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:13:05,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 14:13:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 14:13:05,398 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:05,419 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-07-19 14:13:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 14:13:05,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-07-19 14:13:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:05,421 INFO L225 Difference]: With dead ends: 45 [2022-07-19 14:13:05,421 INFO L226 Difference]: Without dead ends: 36 [2022-07-19 14:13:05,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 14:13:05,422 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:05,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 134 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:13:05,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-19 14:13:05,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-07-19 14:13:05,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 14:13:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-07-19 14:13:05,425 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 18 [2022-07-19 14:13:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:05,426 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-07-19 14:13:05,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:05,426 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-07-19 14:13:05,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 14:13:05,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:05,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:05,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 14:13:05,427 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:05,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:05,427 INFO L85 PathProgramCache]: Analyzing trace with hash -79286005, now seen corresponding path program 1 times [2022-07-19 14:13:05,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:13:05,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140303565] [2022-07-19 14:13:05,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:05,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:13:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 14:13:05,440 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 14:13:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 14:13:05,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 14:13:05,465 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 14:13:05,466 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 14:13:05,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 14:13:05,469 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-19 14:13:05,471 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 14:13:05,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 02:13:05 BoogieIcfgContainer [2022-07-19 14:13:05,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 14:13:05,488 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 14:13:05,488 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 14:13:05,488 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 14:13:05,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:13:04" (3/4) ... [2022-07-19 14:13:05,490 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 14:13:05,490 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 14:13:05,491 INFO L158 Benchmark]: Toolchain (without parser) took 1594.54ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 71.2MB in the beginning and 84.3MB in the end (delta: -13.2MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2022-07-19 14:13:05,491 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 81.8MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:13:05,491 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.75ms. Allocated memory is still 102.8MB. Free memory was 70.8MB in the beginning and 76.9MB in the end (delta: -6.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-07-19 14:13:05,491 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.95ms. Allocated memory is still 102.8MB. Free memory was 76.9MB in the beginning and 75.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:13:05,492 INFO L158 Benchmark]: Boogie Preprocessor took 20.69ms. Allocated memory is still 102.8MB. Free memory was 75.3MB in the beginning and 74.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 14:13:05,492 INFO L158 Benchmark]: RCFGBuilder took 300.61ms. Allocated memory is still 102.8MB. Free memory was 73.7MB in the beginning and 61.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 14:13:05,492 INFO L158 Benchmark]: TraceAbstraction took 990.07ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 61.6MB in the beginning and 85.4MB in the end (delta: -23.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:13:05,492 INFO L158 Benchmark]: Witness Printer took 2.53ms. Allocated memory is still 123.7MB. Free memory was 85.4MB in the beginning and 84.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:13:05,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 81.8MB. Free memory is still 42.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.75ms. Allocated memory is still 102.8MB. Free memory was 70.8MB in the beginning and 76.9MB in the end (delta: -6.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.95ms. Allocated memory is still 102.8MB. Free memory was 76.9MB in the beginning and 75.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.69ms. Allocated memory is still 102.8MB. Free memory was 75.3MB in the beginning and 74.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 300.61ms. Allocated memory is still 102.8MB. Free memory was 73.7MB in the beginning and 61.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 990.07ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 61.6MB in the beginning and 85.4MB in the end (delta: -23.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.53ms. Allocated memory is still 123.7MB. Free memory was 85.4MB in the beginning and 84.3MB in the end (delta: 1.0MB). 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: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 77. Possible FailurePath: [L76] double x = 0.0; [L77] double y = -0.0; [L78] CALL, EXPR fmin_double(x, y) [L48] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L21] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; VAL [\old(x)=0, \result=0, lsw=4294967297, msw=4293918721, x=0] [L48] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4294967298, __fpclassify_double(x)=0, x=0, y=4294967298] [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; VAL [\old(x)=0, \old(y)=4294967298, \result=4294967298, x=0, y=4294967298] [L78] RET, EXPR fmin_double(x, y) [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4294967298, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4294967298] [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() VAL [res=4294967298, x=0, y=4294967298] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 591 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 406 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 185 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 23, 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, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 207 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 14:13:05,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- 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_1232a.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 f5978e6794574f24e5282dc6c0759b72c8b7ad9dd0acf1cc3c9d6f2352537904 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 14:13:07,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 14:13:07,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 14:13:07,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 14:13:07,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 14:13:07,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 14:13:07,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 14:13:07,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 14:13:07,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 14:13:07,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 14:13:07,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 14:13:07,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 14:13:07,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 14:13:07,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 14:13:07,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 14:13:07,339 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 14:13:07,340 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 14:13:07,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 14:13:07,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 14:13:07,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 14:13:07,350 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 14:13:07,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 14:13:07,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 14:13:07,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 14:13:07,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 14:13:07,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 14:13:07,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 14:13:07,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 14:13:07,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 14:13:07,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 14:13:07,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 14:13:07,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 14:13:07,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 14:13:07,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 14:13:07,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 14:13:07,368 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 14:13:07,368 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 14:13:07,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 14:13:07,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 14:13:07,369 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 14:13:07,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 14:13:07,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 14:13:07,371 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 14:13:07,400 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 14:13:07,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 14:13:07,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 14:13:07,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 14:13:07,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 14:13:07,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 14:13:07,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 14:13:07,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 14:13:07,402 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 14:13:07,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 14:13:07,404 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 14:13:07,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 14:13:07,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 14:13:07,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 14:13:07,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 14:13:07,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 14:13:07,412 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 14:13:07,412 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 14:13:07,412 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 14:13:07,412 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 14:13:07,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 14:13:07,413 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 14:13:07,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 14:13:07,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 14:13:07,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 14:13:07,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 14:13:07,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:13:07,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 14:13:07,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 14:13:07,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 14:13:07,414 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 14:13:07,415 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 14:13:07,415 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 14:13:07,415 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 14:13:07,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 14:13:07,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 14:13:07,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f5978e6794574f24e5282dc6c0759b72c8b7ad9dd0acf1cc3c9d6f2352537904 [2022-07-19 14:13:07,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 14:13:07,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 14:13:07,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 14:13:07,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 14:13:07,698 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 14:13:07,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2022-07-19 14:13:07,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abbb7bba4/ea929dfc87bb4e89ac907139637ca4f8/FLAGc4c256c0c [2022-07-19 14:13:08,070 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 14:13:08,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1232a.c [2022-07-19 14:13:08,075 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abbb7bba4/ea929dfc87bb4e89ac907139637ca4f8/FLAGc4c256c0c [2022-07-19 14:13:08,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abbb7bba4/ea929dfc87bb4e89ac907139637ca4f8 [2022-07-19 14:13:08,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 14:13:08,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 14:13:08,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 14:13:08,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 14:13:08,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 14:13:08,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:13:08" (1/1) ... [2022-07-19 14:13:08,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4809c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08, skipping insertion in model container [2022-07-19 14:13:08,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:13:08" (1/1) ... [2022-07-19 14:13:08,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 14:13:08,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 14:13:08,275 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_1232a.c[1957,1970] [2022-07-19 14:13:08,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:13:08,293 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 14:13:08,328 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_1232a.c[1957,1970] [2022-07-19 14:13:08,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:13:08,344 INFO L208 MainTranslator]: Completed translation [2022-07-19 14:13:08,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08 WrapperNode [2022-07-19 14:13:08,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 14:13:08,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 14:13:08,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 14:13:08,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 14:13:08,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08" (1/1) ... [2022-07-19 14:13:08,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08" (1/1) ... [2022-07-19 14:13:08,382 INFO L137 Inliner]: procedures = 22, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2022-07-19 14:13:08,383 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 14:13:08,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 14:13:08,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 14:13:08,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 14:13:08,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08" (1/1) ... [2022-07-19 14:13:08,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08" (1/1) ... [2022-07-19 14:13:08,396 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08" (1/1) ... [2022-07-19 14:13:08,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08" (1/1) ... [2022-07-19 14:13:08,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08" (1/1) ... [2022-07-19 14:13:08,405 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08" (1/1) ... [2022-07-19 14:13:08,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08" (1/1) ... [2022-07-19 14:13:08,408 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 14:13:08,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 14:13:08,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 14:13:08,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 14:13:08,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08" (1/1) ... [2022-07-19 14:13:08,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:13:08,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:13:08,430 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) [2022-07-19 14:13:08,446 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 [2022-07-19 14:13:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 14:13:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-07-19 14:13:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 14:13:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 14:13:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-07-19 14:13:08,458 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-07-19 14:13:08,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-19 14:13:08,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 14:13:08,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 14:13:08,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 14:13:08,531 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 14:13:08,532 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 14:13:08,723 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 14:13:08,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 14:13:08,739 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 14:13:08,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:13:08 BoogieIcfgContainer [2022-07-19 14:13:08,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 14:13:08,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 14:13:08,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 14:13:08,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 14:13:08,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 02:13:08" (1/3) ... [2022-07-19 14:13:08,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e82c876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:13:08, skipping insertion in model container [2022-07-19 14:13:08,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:13:08" (2/3) ... [2022-07-19 14:13:08,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e82c876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:13:08, skipping insertion in model container [2022-07-19 14:13:08,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:13:08" (3/3) ... [2022-07-19 14:13:08,746 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c [2022-07-19 14:13:08,759 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 14:13:08,763 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 14:13:08,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 14:13:08,808 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e7060f8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@76a0a044 [2022-07-19 14:13:08,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 14:13:08,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 14:13:08,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-19 14:13:08,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:08,818 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:08,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:08,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1130952206, now seen corresponding path program 1 times [2022-07-19 14:13:08,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:13:08,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126429802] [2022-07-19 14:13:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:08,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:13:08,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:13:08,835 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) [2022-07-19 14:13:08,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 14:13:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:08,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 14:13:08,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:13:08,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:13:08,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:13:08,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:13:08,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126429802] [2022-07-19 14:13:08,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126429802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:08,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:08,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 14:13:08,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835377665] [2022-07-19 14:13:08,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:08,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 14:13:08,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:13:08,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 14:13:08,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 14:13:08,997 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:09,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:09,016 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2022-07-19 14:13:09,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 14:13:09,018 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-07-19 14:13:09,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:09,022 INFO L225 Difference]: With dead ends: 55 [2022-07-19 14:13:09,022 INFO L226 Difference]: Without dead ends: 26 [2022-07-19 14:13:09,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 14:13:09,029 INFO L413 NwaCegarLoop]: 37 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, 37 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 [2022-07-19 14:13:09,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:13:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-19 14:13:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-19 14:13:09,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 14:13:09,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-07-19 14:13:09,058 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 13 [2022-07-19 14:13:09,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:09,058 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-07-19 14:13:09,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:09,059 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-07-19 14:13:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-19 14:13:09,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:09,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:09,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 14:13:09,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:13:09,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:09,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:09,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1285201507, now seen corresponding path program 1 times [2022-07-19 14:13:09,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:13:09,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521257334] [2022-07-19 14:13:09,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:09,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:13:09,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:13:09,307 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) [2022-07-19 14:13:09,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 14:13:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:09,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 14:13:09,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:13:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:13:09,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:13:09,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:13:09,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521257334] [2022-07-19 14:13:09,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521257334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:09,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:09,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 14:13:09,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159571789] [2022-07-19 14:13:09,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:09,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 14:13:09,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:13:09,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 14:13:09,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 14:13:09,394 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:09,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:09,433 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-07-19 14:13:09,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 14:13:09,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-19 14:13:09,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:09,435 INFO L225 Difference]: With dead ends: 38 [2022-07-19 14:13:09,435 INFO L226 Difference]: Without dead ends: 29 [2022-07-19 14:13:09,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 14:13:09,436 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:09,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:13:09,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-19 14:13:09,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-07-19 14:13:09,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-19 14:13:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2022-07-19 14:13:09,444 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 14 [2022-07-19 14:13:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:09,444 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2022-07-19 14:13:09,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2022-07-19 14:13:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 14:13:09,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:09,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:09,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-19 14:13:09,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:13:09,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:09,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:09,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1497908235, now seen corresponding path program 1 times [2022-07-19 14:13:09,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:13:09,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1928915245] [2022-07-19 14:13:09,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:09,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:13:09,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:13:09,661 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) [2022-07-19 14:13:09,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 14:13:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:09,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 14:13:09,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:13:09,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:13:09,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:13:09,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:13:09,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1928915245] [2022-07-19 14:13:09,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1928915245] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:09,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:09,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 14:13:09,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909764114] [2022-07-19 14:13:09,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:09,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 14:13:09,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:13:09,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 14:13:09,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 14:13:09,998 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:10,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:10,123 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2022-07-19 14:13:10,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 14:13:10,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-19 14:13:10,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:10,125 INFO L225 Difference]: With dead ends: 56 [2022-07-19 14:13:10,125 INFO L226 Difference]: Without dead ends: 31 [2022-07-19 14:13:10,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 14:13:10,126 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 18 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:10,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 102 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2022-07-19 14:13:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-19 14:13:10,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-19 14:13:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 14:13:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-07-19 14:13:10,139 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 15 [2022-07-19 14:13:10,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:10,140 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-07-19 14:13:10,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:10,140 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-07-19 14:13:10,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-19 14:13:10,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:10,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:10,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-19 14:13:10,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:13:10,349 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:10,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:10,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2116811041, now seen corresponding path program 1 times [2022-07-19 14:13:10,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:13:10,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863495388] [2022-07-19 14:13:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:10,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:13:10,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:13:10,352 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) [2022-07-19 14:13:10,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-19 14:13:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:10,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 14:13:10,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:13:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:13:10,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:13:10,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:13:10,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863495388] [2022-07-19 14:13:10,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863495388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:10,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:10,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 14:13:10,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927534793] [2022-07-19 14:13:10,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:10,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 14:13:10,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:13:10,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 14:13:10,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 14:13:10,448 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:10,587 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-07-19 14:13:10,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 14:13:10,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-19 14:13:10,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:10,589 INFO L225 Difference]: With dead ends: 43 [2022-07-19 14:13:10,589 INFO L226 Difference]: Without dead ends: 34 [2022-07-19 14:13:10,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 14:13:10,590 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:10,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 14:13:10,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-19 14:13:10,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2022-07-19 14:13:10,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 14:13:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-07-19 14:13:10,595 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 16 [2022-07-19 14:13:10,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:10,595 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-07-19 14:13:10,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:10,595 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-07-19 14:13:10,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-19 14:13:10,596 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:10,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:10,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-19 14:13:10,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:13:10,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:10,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:10,805 INFO L85 PathProgramCache]: Analyzing trace with hash 172315143, now seen corresponding path program 1 times [2022-07-19 14:13:10,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:13:10,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573902526] [2022-07-19 14:13:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:10,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:13:10,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:13:10,807 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) [2022-07-19 14:13:10,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-19 14:13:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:10,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 14:13:10,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:13:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:13:10,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:13:10,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:13:10,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573902526] [2022-07-19 14:13:10,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573902526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:10,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:10,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 14:13:10,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216649235] [2022-07-19 14:13:10,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:10,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 14:13:10,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:13:10,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 14:13:10,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 14:13:10,987 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:11,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:11,072 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-07-19 14:13:11,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 14:13:11,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-19 14:13:11,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:11,073 INFO L225 Difference]: With dead ends: 57 [2022-07-19 14:13:11,073 INFO L226 Difference]: Without dead ends: 30 [2022-07-19 14:13:11,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 14:13:11,074 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:11,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 88 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2022-07-19 14:13:11,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-07-19 14:13:11,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-07-19 14:13:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 14:13:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2022-07-19 14:13:11,078 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 17 [2022-07-19 14:13:11,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:11,078 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2022-07-19 14:13:11,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 14:13:11,078 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2022-07-19 14:13:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 14:13:11,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:11,079 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:11,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-19 14:13:11,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:13:11,287 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:11,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:11,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1943218574, now seen corresponding path program 1 times [2022-07-19 14:13:11,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:13:11,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536835415] [2022-07-19 14:13:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:11,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:13:11,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:13:11,290 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) [2022-07-19 14:13:11,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-19 14:13:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:11,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 14:13:11,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:13:11,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 14:13:11,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:13:11,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:13:11,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536835415] [2022-07-19 14:13:11,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536835415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:11,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:11,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 14:13:11,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211654569] [2022-07-19 14:13:11,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:11,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 14:13:11,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:13:11,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 14:13:11,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 14:13:11,355 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:11,372 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2022-07-19 14:13:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 14:13:11,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-07-19 14:13:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:11,374 INFO L225 Difference]: With dead ends: 40 [2022-07-19 14:13:11,374 INFO L226 Difference]: Without dead ends: 31 [2022-07-19 14:13:11,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 14:13:11,387 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:11,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:13:11,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-19 14:13:11,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-19 14:13:11,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 14:13:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2022-07-19 14:13:11,392 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 22 [2022-07-19 14:13:11,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:11,392 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2022-07-19 14:13:11,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:11,392 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2022-07-19 14:13:11,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-19 14:13:11,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:11,392 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:11,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-19 14:13:11,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:13:11,600 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:11,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1682849308, now seen corresponding path program 1 times [2022-07-19 14:13:11,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:13:11,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095915510] [2022-07-19 14:13:11,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:11,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:13:11,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:13:11,602 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) [2022-07-19 14:13:11,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-19 14:13:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:11,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 14:13:11,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:13:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 14:13:11,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:13:11,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:13:11,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095915510] [2022-07-19 14:13:11,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095915510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:11,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:11,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 14:13:11,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336075380] [2022-07-19 14:13:11,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:11,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 14:13:11,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:13:11,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 14:13:11,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 14:13:11,814 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:11,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:11,853 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-07-19 14:13:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 14:13:11,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-07-19 14:13:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:11,858 INFO L225 Difference]: With dead ends: 45 [2022-07-19 14:13:11,858 INFO L226 Difference]: Without dead ends: 31 [2022-07-19 14:13:11,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 14:13:11,858 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:11,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 102 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2022-07-19 14:13:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-19 14:13:11,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-19 14:13:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 14:13:11,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-07-19 14:13:11,862 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 23 [2022-07-19 14:13:11,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:11,862 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-07-19 14:13:11,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:11,862 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-07-19 14:13:11,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 14:13:11,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:11,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:11,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-19 14:13:12,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:13:12,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:12,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:12,071 INFO L85 PathProgramCache]: Analyzing trace with hash 474937390, now seen corresponding path program 1 times [2022-07-19 14:13:12,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:13:12,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063902019] [2022-07-19 14:13:12,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:12,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:13:12,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:13:12,073 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 14:13:12,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-19 14:13:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:12,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 14:13:12,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:13:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 14:13:12,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:13:12,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:13:12,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063902019] [2022-07-19 14:13:12,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063902019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:12,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:12,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 14:13:12,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745677086] [2022-07-19 14:13:12,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:12,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 14:13:12,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:13:12,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 14:13:12,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 14:13:12,143 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:12,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:12,171 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-07-19 14:13:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 14:13:12,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-07-19 14:13:12,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:12,172 INFO L225 Difference]: With dead ends: 41 [2022-07-19 14:13:12,172 INFO L226 Difference]: Without dead ends: 32 [2022-07-19 14:13:12,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 14:13:12,173 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:12,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:13:12,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-19 14:13:12,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2022-07-19 14:13:12,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 14:13:12,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-07-19 14:13:12,176 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 24 [2022-07-19 14:13:12,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:12,176 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-07-19 14:13:12,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:12,176 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-07-19 14:13:12,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 14:13:12,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:12,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:12,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-19 14:13:12,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:13:12,387 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:12,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:12,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1777787178, now seen corresponding path program 1 times [2022-07-19 14:13:12,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:13:12,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703272934] [2022-07-19 14:13:12,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:12,388 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:13:12,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:13:12,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 14:13:12,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-19 14:13:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:12,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 14:13:12,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:13:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 14:13:12,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:13:12,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:13:12,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703272934] [2022-07-19 14:13:12,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703272934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:12,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:12,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 14:13:12,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109520175] [2022-07-19 14:13:12,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:12,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 14:13:12,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:13:12,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 14:13:12,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 14:13:12,507 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:12,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:12,580 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2022-07-19 14:13:12,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 14:13:12,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-07-19 14:13:12,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:12,581 INFO L225 Difference]: With dead ends: 42 [2022-07-19 14:13:12,581 INFO L226 Difference]: Without dead ends: 39 [2022-07-19 14:13:12,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-19 14:13:12,582 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:12,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 114 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:13:12,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-07-19 14:13:12,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-07-19 14:13:12,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 14:13:12,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2022-07-19 14:13:12,585 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 24 [2022-07-19 14:13:12,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:12,585 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2022-07-19 14:13:12,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:12,586 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2022-07-19 14:13:12,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 14:13:12,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:12,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:12,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-19 14:13:12,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:13:12,795 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:12,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:12,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1835045480, now seen corresponding path program 1 times [2022-07-19 14:13:12,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:13:12,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313100584] [2022-07-19 14:13:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:12,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:13:12,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:13:12,797 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 14:13:12,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-19 14:13:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:12,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 14:13:12,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:13:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 14:13:12,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:13:12,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:13:12,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313100584] [2022-07-19 14:13:12,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313100584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:12,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:12,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 14:13:12,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742283482] [2022-07-19 14:13:12,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:12,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 14:13:12,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:13:12,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 14:13:12,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 14:13:12,888 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:12,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:12,896 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2022-07-19 14:13:12,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 14:13:12,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-07-19 14:13:12,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:12,896 INFO L225 Difference]: With dead ends: 41 [2022-07-19 14:13:12,896 INFO L226 Difference]: Without dead ends: 31 [2022-07-19 14:13:12,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 14:13:12,897 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:12,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 41 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:13:12,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-19 14:13:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-19 14:13:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 14:13:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-07-19 14:13:12,900 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 24 [2022-07-19 14:13:12,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:12,900 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-07-19 14:13:12,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-07-19 14:13:12,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 14:13:12,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:12,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:12,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-07-19 14:13:13,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:13:13,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:13,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1323122336, now seen corresponding path program 1 times [2022-07-19 14:13:13,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:13:13,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067117029] [2022-07-19 14:13:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:13,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:13:13,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:13:13,111 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 14:13:13,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-19 14:13:13,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:13,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 14:13:13,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:13:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 14:13:13,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:13:13,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:13:13,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067117029] [2022-07-19 14:13:13,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067117029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:13,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:13,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 14:13:13,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826894573] [2022-07-19 14:13:13,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:13,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 14:13:13,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:13:13,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 14:13:13,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 14:13:13,262 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:13,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:13,292 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-07-19 14:13:13,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 14:13:13,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-07-19 14:13:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:13,293 INFO L225 Difference]: With dead ends: 42 [2022-07-19 14:13:13,293 INFO L226 Difference]: Without dead ends: 25 [2022-07-19 14:13:13,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 14:13:13,294 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:13,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 84 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-07-19 14:13:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-19 14:13:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-19 14:13:13,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 14:13:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-07-19 14:13:13,296 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 25 [2022-07-19 14:13:13,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:13,296 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-07-19 14:13:13,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:13,296 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-07-19 14:13:13,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 14:13:13,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:13:13,297 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:13,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-19 14:13:13,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:13:13,505 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:13:13,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:13:13,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2065734315, now seen corresponding path program 1 times [2022-07-19 14:13:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 14:13:13,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060463950] [2022-07-19 14:13:13,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:13:13,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 14:13:13,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 14:13:13,507 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 14:13:13,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-19 14:13:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:13:13,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-19 14:13:13,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:13:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 14:13:13,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 14:13:13,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 14:13:13,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060463950] [2022-07-19 14:13:13,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060463950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:13:13,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:13:13,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 14:13:13,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583678307] [2022-07-19 14:13:13,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:13:13,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 14:13:13,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 14:13:13,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 14:13:13,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 14:13:13,663 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:13,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:13:13,756 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-07-19 14:13:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 14:13:13,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-07-19 14:13:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:13:13,756 INFO L225 Difference]: With dead ends: 25 [2022-07-19 14:13:13,757 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 14:13:13,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-07-19 14:13:13,757 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:13:13,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 130 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2022-07-19 14:13:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 14:13:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 14:13:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:13:13,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 14:13:13,758 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2022-07-19 14:13:13,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:13:13,758 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 14:13:13,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 14:13:13,758 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 14:13:13,758 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 14:13:13,760 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 14:13:13,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-19 14:13:13,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 14:13:13,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 14:13:14,041 INFO L899 garLoopResultBuilder]: For program point L33(lines 33 44) no Hoare annotation was computed. [2022-07-19 14:13:14,042 INFO L899 garLoopResultBuilder]: For program point __fpclassify_doubleFINAL(lines 20 45) no Hoare annotation was computed. [2022-07-19 14:13:14,042 INFO L899 garLoopResultBuilder]: For program point L23-1(lines 23 28) no Hoare annotation was computed. [2022-07-19 14:13:14,042 INFO L895 garLoopResultBuilder]: At program point L23-2(lines 23 28) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2022-07-19 14:13:14,042 INFO L899 garLoopResultBuilder]: For program point L23-3(lines 20 45) no Hoare annotation was computed. [2022-07-19 14:13:14,042 INFO L902 garLoopResultBuilder]: At program point __fpclassify_doubleENTRY(lines 20 45) the Hoare annotation is: true [2022-07-19 14:13:14,042 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 44) no Hoare annotation was computed. [2022-07-19 14:13:14,042 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 44) no Hoare annotation was computed. [2022-07-19 14:13:14,042 INFO L899 garLoopResultBuilder]: For program point __fpclassify_doubleEXIT(lines 20 45) no Hoare annotation was computed. [2022-07-19 14:13:14,042 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2022-07-19 14:13:14,042 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_double_~x#1| (_ +zero 11 53)) (= |ULTIMATE.start_fmin_double_~y#1| (fp.neg (_ +zero 11 53)))) [2022-07-19 14:13:14,042 INFO L899 garLoopResultBuilder]: For program point L48-1(lines 48 49) no Hoare annotation was computed. [2022-07-19 14:13:14,042 INFO L899 garLoopResultBuilder]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2022-07-19 14:13:14,042 INFO L895 garLoopResultBuilder]: At program point L65(lines 56 66) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_double_~x#1| (_ +zero 11 53)) |ULTIMATE.start_main_#t~short12#1| (= (_ bv1 32) |ULTIMATE.start___signbit_double_#res#1|) (= |ULTIMATE.start_fmin_double_~y#1| (fp.neg (_ +zero 11 53)))) [2022-07-19 14:13:14,042 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 14:13:14,042 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 14:13:14,042 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 14:13:14,043 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 82) no Hoare annotation was computed. [2022-07-19 14:13:14,043 INFO L902 garLoopResultBuilder]: At program point L86(lines 68 87) the Hoare annotation is: true [2022-07-19 14:13:14,043 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-07-19 14:13:14,043 INFO L899 garLoopResultBuilder]: For program point L53-2(line 53) no Hoare annotation was computed. [2022-07-19 14:13:14,043 INFO L895 garLoopResultBuilder]: At program point L53-3(lines 47 54) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= |ULTIMATE.start_fmin_double_~x#1| (_ +zero 11 53)) (= |ULTIMATE.start_fmin_double_#res#1| .cse0) (= |ULTIMATE.start_fmin_double_~y#1| .cse0))) [2022-07-19 14:13:14,043 INFO L899 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2022-07-19 14:13:14,043 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 14:13:14,043 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_double_~x#1| (_ +zero 11 53)) (= |ULTIMATE.start_fmin_double_~y#1| (fp.neg (_ +zero 11 53)))) [2022-07-19 14:13:14,043 INFO L899 garLoopResultBuilder]: For program point L50-1(lines 50 51) no Hoare annotation was computed. [2022-07-19 14:13:14,043 INFO L899 garLoopResultBuilder]: For program point L59-1(lines 59 63) no Hoare annotation was computed. [2022-07-19 14:13:14,043 INFO L895 garLoopResultBuilder]: At program point L59-2(lines 59 63) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 11 53)))) (and (= |ULTIMATE.start_fmin_double_~x#1| (_ +zero 11 53)) |ULTIMATE.start_main_#t~short12#1| (= .cse0 |ULTIMATE.start___signbit_double_~x#1|) (= |ULTIMATE.start_fmin_double_#res#1| .cse0) (= |ULTIMATE.start_main_~res~0#1| .cse0) (= |ULTIMATE.start_fmin_double_~y#1| .cse0))) [2022-07-19 14:13:14,043 INFO L899 garLoopResultBuilder]: For program point L59-3(lines 59 63) no Hoare annotation was computed. [2022-07-19 14:13:14,045 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:13:14,046 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 14:13:14,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 02:13:14 BoogieIcfgContainer [2022-07-19 14:13:14,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 14:13:14,057 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 14:13:14,057 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 14:13:14,058 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 14:13:14,058 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:13:08" (3/4) ... [2022-07-19 14:13:14,060 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 14:13:14,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2022-07-19 14:13:14,066 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-07-19 14:13:14,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-07-19 14:13:14,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 14:13:14,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 14:13:14,081 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2022-07-19 14:13:14,082 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2022-07-19 14:13:14,082 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((x == ~Pluszero~LONGDOUBLE() && aux-res == -0.0 && __signbit_double(res) == 1-aux) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && res == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2022-07-19 14:13:14,082 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((x == ~Pluszero~LONGDOUBLE() && aux-res == -0.0 && __signbit_double(res) == 1-aux) && 1bv32 == \result) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) [2022-07-19 14:13:14,089 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 14:13:14,089 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 14:13:14,090 INFO L158 Benchmark]: Toolchain (without parser) took 5998.40ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 37.2MB in the beginning and 29.5MB in the end (delta: 7.8MB). Peak memory consumption was 28.9MB. Max. memory is 16.1GB. [2022-07-19 14:13:14,090 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 40.3MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 14:13:14,090 INFO L158 Benchmark]: CACSL2BoogieTranslator took 253.42ms. Allocated memory is still 58.7MB. Free memory was 37.1MB in the beginning and 40.1MB in the end (delta: -3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 14:13:14,090 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.57ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 38.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 14:13:14,090 INFO L158 Benchmark]: Boogie Preprocessor took 19.67ms. Allocated memory is still 58.7MB. Free memory was 38.4MB in the beginning and 36.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 14:13:14,091 INFO L158 Benchmark]: RCFGBuilder took 332.61ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 36.8MB in the beginning and 60.5MB in the end (delta: -23.7MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2022-07-19 14:13:14,091 INFO L158 Benchmark]: TraceAbstraction took 5314.58ms. Allocated memory is still 79.7MB. Free memory was 60.0MB in the beginning and 32.4MB in the end (delta: 27.6MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2022-07-19 14:13:14,091 INFO L158 Benchmark]: Witness Printer took 32.03ms. Allocated memory is still 79.7MB. Free memory was 32.4MB in the beginning and 29.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 14:13:14,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 40.3MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 253.42ms. Allocated memory is still 58.7MB. Free memory was 37.1MB in the beginning and 40.1MB in the end (delta: -3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.57ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 38.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.67ms. Allocated memory is still 58.7MB. Free memory was 38.4MB in the beginning and 36.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 332.61ms. Allocated memory was 58.7MB in the beginning and 79.7MB in the end (delta: 21.0MB). Free memory was 36.8MB in the beginning and 60.5MB in the end (delta: -23.7MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5314.58ms. Allocated memory is still 79.7MB. Free memory was 60.0MB in the beginning and 32.4MB in the end (delta: 27.6MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * Witness Printer took 32.03ms. Allocated memory is still 79.7MB. Free memory was 32.4MB in the beginning and 29.5MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.3s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 1068 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 92 IncrementalHoareTripleChecker+Unchecked, 718 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 155 IncrementalHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 350 mSDtfsCounter, 155 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=9, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 23 NumberOfFragments, 66 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 45 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 233 ConstructedInterpolants, 26 QuantifiedInterpolants, 822 SizeOfPredicates, 46 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (x == ~Pluszero~LONGDOUBLE() && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((x == ~Pluszero~LONGDOUBLE() && aux-res == -0.0 && __signbit_double(res) == 1-aux) && ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) == x) && \result == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && res == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE())) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((x == ~Pluszero~LONGDOUBLE() && aux-res == -0.0 && __signbit_double(res) == 1-aux) && 1bv32 == \result) && y == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) RESULT: Ultimate proved your program to be correct! [2022-07-19 14:13:14,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE