./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0662a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_0662a.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 4ab31643130fe59fd572e1c725f7ce4686b4f219c563d19cc3c93d88df427f8c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:35:34,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:35:34,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:35:34,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:35:34,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:35:34,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:35:34,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:35:34,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:35:34,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:35:34,661 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:35:34,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:35:34,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:35:34,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:35:34,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:35:34,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:35:34,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:35:34,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:35:34,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:35:34,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:35:34,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:35:34,681 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:35:34,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:35:34,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:35:34,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:35:34,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:35:34,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:35:34,692 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:35:34,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:35:34,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:35:34,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:35:34,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:35:34,694 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:35:34,695 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:35:34,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:35:34,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:35:34,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:35:34,697 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:35:34,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:35:34,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:35:34,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:35:34,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:35:34,699 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:35:34,700 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 14:35:34,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:35:34,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:35:34,731 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:35:34,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:35:34,732 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:35:34,732 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:35:34,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:35:34,733 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:35:34,733 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:35:34,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:35:34,734 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:35:34,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 14:35:34,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:35:34,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:35:34,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:35:34,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:35:34,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:35:34,735 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:35:34,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:35:34,736 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:35:34,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:35:34,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:35:34,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:35:34,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:35:34,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:35:34,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:35:34,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:35:34,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:35:34,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 14:35:34,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 14:35:34,739 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:35:34,739 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:35:34,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:35:34,739 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ab31643130fe59fd572e1c725f7ce4686b4f219c563d19cc3c93d88df427f8c [2022-07-13 14:35:34,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:35:34,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:35:34,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:35:34,974 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:35:34,974 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:35:34,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0662a.c [2022-07-13 14:35:35,046 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/427ed8299/5b442a322edc4c2087e27d3f9358bfc6/FLAG9273e2aff [2022-07-13 14:35:35,477 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:35:35,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0662a.c [2022-07-13 14:35:35,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/427ed8299/5b442a322edc4c2087e27d3f9358bfc6/FLAG9273e2aff [2022-07-13 14:35:35,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/427ed8299/5b442a322edc4c2087e27d3f9358bfc6 [2022-07-13 14:35:35,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:35:35,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:35:35,889 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:35:35,889 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:35:35,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:35:35,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:35:35" (1/1) ... [2022-07-13 14:35:35,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac18b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:35, skipping insertion in model container [2022-07-13 14:35:35,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:35:35" (1/1) ... [2022-07-13 14:35:35,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:35:35,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:35:36,137 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_0662a.c[6225,6238] [2022-07-13 14:35:36,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:35:36,153 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:35:36,196 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_0662a.c[6225,6238] [2022-07-13 14:35:36,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:35:36,214 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:35:36,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:36 WrapperNode [2022-07-13 14:35:36,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:35:36,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:35:36,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:35:36,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:35:36,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:36" (1/1) ... [2022-07-13 14:35:36,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:36" (1/1) ... [2022-07-13 14:35:36,272 INFO L137 Inliner]: procedures = 19, calls = 87, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 263 [2022-07-13 14:35:36,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:35:36,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:35:36,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:35:36,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:35:36,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:36" (1/1) ... [2022-07-13 14:35:36,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:36" (1/1) ... [2022-07-13 14:35:36,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:36" (1/1) ... [2022-07-13 14:35:36,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:36" (1/1) ... [2022-07-13 14:35:36,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:36" (1/1) ... [2022-07-13 14:35:36,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:36" (1/1) ... [2022-07-13 14:35:36,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:36" (1/1) ... [2022-07-13 14:35:36,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:35:36,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:35:36,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:35:36,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:35:36,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:36" (1/1) ... [2022-07-13 14:35:36,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:35:36,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:35:36,397 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) [2022-07-13 14:35:36,420 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 [2022-07-13 14:35:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:35:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 14:35:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 14:35:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-13 14:35:36,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 14:35:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-07-13 14:35:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-07-13 14:35:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-13 14:35:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2022-07-13 14:35:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2022-07-13 14:35:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:35:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:35:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 14:35:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-07-13 14:35:36,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 14:35:36,597 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:35:36,599 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:35:37,025 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:35:37,034 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:35:37,034 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-13 14:35:37,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:35:37 BoogieIcfgContainer [2022-07-13 14:35:37,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:35:37,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:35:37,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:35:37,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:35:37,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:35:35" (1/3) ... [2022-07-13 14:35:37,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504c0d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:35:37, skipping insertion in model container [2022-07-13 14:35:37,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:36" (2/3) ... [2022-07-13 14:35:37,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@504c0d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:35:37, skipping insertion in model container [2022-07-13 14:35:37,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:35:37" (3/3) ... [2022-07-13 14:35:37,048 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0662a.c [2022-07-13 14:35:37,065 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:35:37,065 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:35:37,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:35:37,129 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@429d097d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@12617e5c [2022-07-13 14:35:37,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:35:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 99 states have (on average 1.7373737373737375) internal successors, (172), 100 states have internal predecessors, (172), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:35:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 14:35:37,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:35:37,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:35:37,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:35:37,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:35:37,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1187241542, now seen corresponding path program 1 times [2022-07-13 14:35:37,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:35:37,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217827922] [2022-07-13 14:35:37,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:35:37,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:35:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:35:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:35:37,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 14:35:37,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217827922] [2022-07-13 14:35:37,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217827922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:35:37,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:35:37,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:35:37,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348576756] [2022-07-13 14:35:37,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:35:37,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:35:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 14:35:37,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:35:37,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:35:37,345 INFO L87 Difference]: Start difference. First operand has 107 states, 99 states have (on average 1.7373737373737375) internal successors, (172), 100 states have internal predecessors, (172), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:35:37,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:35:37,376 INFO L93 Difference]: Finished difference Result 211 states and 360 transitions. [2022-07-13 14:35:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:35:37,378 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-13 14:35:37,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:35:37,385 INFO L225 Difference]: With dead ends: 211 [2022-07-13 14:35:37,385 INFO L226 Difference]: Without dead ends: 103 [2022-07-13 14:35:37,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:35:37,392 INFO L413 NwaCegarLoop]: 157 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, 157 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 [2022-07-13 14:35:37,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:35:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-07-13 14:35:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-07-13 14:35:37,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 96 states have (on average 1.5) internal successors, (144), 96 states have internal predecessors, (144), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:35:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 152 transitions. [2022-07-13 14:35:37,433 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 152 transitions. Word has length 11 [2022-07-13 14:35:37,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:35:37,434 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 152 transitions. [2022-07-13 14:35:37,434 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), 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) [2022-07-13 14:35:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 152 transitions. [2022-07-13 14:35:37,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-13 14:35:37,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:35:37,436 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:35:37,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 14:35:37,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:35:37,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:35:37,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1076214830, now seen corresponding path program 1 times [2022-07-13 14:35:37,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:35:37,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189128002] [2022-07-13 14:35:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:35:37,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:35:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:35:37,688 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 14:35:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:35:37,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 14:35:37,925 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 14:35:37,928 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:35:37,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 14:35:37,934 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 14:35:37,938 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:35:37,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:35:37 BoogieIcfgContainer [2022-07-13 14:35:37,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:35:37,999 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:35:37,999 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:35:37,999 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:35:38,000 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:35:37" (3/4) ... [2022-07-13 14:35:38,004 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 14:35:38,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:35:38,006 INFO L158 Benchmark]: Toolchain (without parser) took 2117.31ms. Allocated memory was 83.9MB in the beginning and 132.1MB in the end (delta: 48.2MB). Free memory was 52.7MB in the beginning and 102.4MB in the end (delta: -49.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:35:38,007 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory was 39.4MB in the beginning and 39.4MB in the end (delta: 27.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:35:38,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.72ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 52.5MB in the beginning and 72.0MB in the end (delta: -19.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:35:38,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.99ms. Allocated memory is still 100.7MB. Free memory was 72.0MB in the beginning and 68.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 14:35:38,013 INFO L158 Benchmark]: Boogie Preprocessor took 79.57ms. Allocated memory is still 100.7MB. Free memory was 68.5MB in the beginning and 65.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:35:38,014 INFO L158 Benchmark]: RCFGBuilder took 685.55ms. Allocated memory is still 100.7MB. Free memory was 65.4MB in the beginning and 61.8MB in the end (delta: 3.6MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2022-07-13 14:35:38,015 INFO L158 Benchmark]: TraceAbstraction took 957.22ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 60.9MB in the beginning and 102.4MB in the end (delta: -41.5MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2022-07-13 14:35:38,015 INFO L158 Benchmark]: Witness Printer took 5.72ms. Allocated memory is still 132.1MB. Free memory is still 102.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:35:38,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory was 39.4MB in the beginning and 39.4MB in the end (delta: 27.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.72ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 52.5MB in the beginning and 72.0MB in the end (delta: -19.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.99ms. Allocated memory is still 100.7MB. Free memory was 72.0MB in the beginning and 68.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.57ms. Allocated memory is still 100.7MB. Free memory was 68.5MB in the beginning and 65.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 685.55ms. Allocated memory is still 100.7MB. Free memory was 65.4MB in the beginning and 61.8MB in the end (delta: 3.6MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * TraceAbstraction took 957.22ms. Allocated memory was 100.7MB in the beginning and 132.1MB in the end (delta: 31.5MB). Free memory was 60.9MB in the beginning and 102.4MB in the end (delta: -41.5MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * Witness Printer took 5.72ms. Allocated memory is still 132.1MB. Free memory is still 102.4MB. 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: 262]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 253, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 261. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L253] double x = -0.0; [L254] double y = __VERIFIER_nondet_double(); [L256] COND TRUE y < 0.0 [L258] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, ix=0, lx=1, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, hy=0, ix=0, iy=0, lx=1, ly=10, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, hy=0, ix=0, iy=0, lx=1, ly=10, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L258] RET, EXPR __ieee754_atan2(y, x) [L258] double res = __ieee754_atan2(y, x); [L261] COND TRUE res != -pi_o_2 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L262] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 157 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 157 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-13 14:35:38,072 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_0662a.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 4ab31643130fe59fd572e1c725f7ce4686b4f219c563d19cc3c93d88df427f8c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:35:40,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:35:40,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:35:40,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:35:40,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:35:40,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:35:40,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:35:40,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:35:40,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:35:40,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:35:40,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:35:40,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:35:40,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:35:40,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:35:40,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:35:40,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:35:40,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:35:40,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:35:40,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:35:40,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:35:40,210 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:35:40,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:35:40,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:35:40,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:35:40,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:35:40,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:35:40,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:35:40,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:35:40,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:35:40,225 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:35:40,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:35:40,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:35:40,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:35:40,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:35:40,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:35:40,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:35:40,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:35:40,231 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:35:40,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:35:40,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:35:40,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:35:40,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:35:40,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 14:35:40,276 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:35:40,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:35:40,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:35:40,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:35:40,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:35:40,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:35:40,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:35:40,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:35:40,280 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:35:40,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:35:40,281 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:35:40,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:35:40,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:35:40,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:35:40,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:35:40,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:35:40,282 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 14:35:40,283 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 14:35:40,283 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 14:35:40,283 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:35:40,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:35:40,283 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:35:40,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:35:40,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:35:40,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:35:40,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:35:40,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:35:40,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:35:40,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:35:40,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:35:40,285 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 14:35:40,285 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 14:35:40,286 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:35:40,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:35:40,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:35:40,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 14:35:40,287 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ab31643130fe59fd572e1c725f7ce4686b4f219c563d19cc3c93d88df427f8c [2022-07-13 14:35:40,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:35:40,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:35:40,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:35:40,679 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:35:40,680 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:35:40,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0662a.c [2022-07-13 14:35:40,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66a7ca61d/ef6f598e2f8444c9be8276073f937d02/FLAGfb51fbf86 [2022-07-13 14:35:41,173 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:35:41,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0662a.c [2022-07-13 14:35:41,187 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66a7ca61d/ef6f598e2f8444c9be8276073f937d02/FLAGfb51fbf86 [2022-07-13 14:35:41,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66a7ca61d/ef6f598e2f8444c9be8276073f937d02 [2022-07-13 14:35:41,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:35:41,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:35:41,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:35:41,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:35:41,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:35:41,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:35:41" (1/1) ... [2022-07-13 14:35:41,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d0b2ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41, skipping insertion in model container [2022-07-13 14:35:41,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:35:41" (1/1) ... [2022-07-13 14:35:41,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:35:41,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:35:41,847 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_0662a.c[6225,6238] [2022-07-13 14:35:41,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:35:41,862 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:35:41,908 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_0662a.c[6225,6238] [2022-07-13 14:35:41,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:35:41,940 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:35:41,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41 WrapperNode [2022-07-13 14:35:41,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:35:41,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:35:41,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:35:41,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:35:41,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41" (1/1) ... [2022-07-13 14:35:41,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41" (1/1) ... [2022-07-13 14:35:42,002 INFO L137 Inliner]: procedures = 22, calls = 87, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 228 [2022-07-13 14:35:42,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:35:42,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:35:42,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:35:42,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:35:42,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41" (1/1) ... [2022-07-13 14:35:42,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41" (1/1) ... [2022-07-13 14:35:42,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41" (1/1) ... [2022-07-13 14:35:42,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41" (1/1) ... [2022-07-13 14:35:42,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41" (1/1) ... [2022-07-13 14:35:42,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41" (1/1) ... [2022-07-13 14:35:42,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41" (1/1) ... [2022-07-13 14:35:42,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:35:42,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:35:42,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:35:42,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:35:42,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41" (1/1) ... [2022-07-13 14:35:42,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:35:42,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:35:42,144 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) [2022-07-13 14:35:42,159 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 [2022-07-13 14:35:42,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:35:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-07-13 14:35:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-07-13 14:35:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 14:35:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 14:35:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-07-13 14:35:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-07-13 14:35:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2022-07-13 14:35:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2022-07-13 14:35:42,189 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2022-07-13 14:35:42,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-13 14:35:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:35:42,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:35:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-13 14:35:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 14:35:42,343 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:35:42,345 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:36:06,526 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:36:06,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:36:06,531 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-07-13 14:36:06,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:36:06 BoogieIcfgContainer [2022-07-13 14:36:06,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:36:06,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:36:06,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:36:06,537 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:36:06,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:35:41" (1/3) ... [2022-07-13 14:36:06,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e44bbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:36:06, skipping insertion in model container [2022-07-13 14:36:06,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:35:41" (2/3) ... [2022-07-13 14:36:06,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e44bbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:36:06, skipping insertion in model container [2022-07-13 14:36:06,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:36:06" (3/3) ... [2022-07-13 14:36:06,539 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0662a.c [2022-07-13 14:36:06,549 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:36:06,550 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:36:06,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:36:06,590 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@1bed1122, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4b02449a [2022-07-13 14:36:06,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:36:06,595 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 86 states have (on average 1.6627906976744187) internal successors, (143), 87 states have internal predecessors, (143), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:36:06,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-13 14:36:06,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:36:06,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:36:06,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:36:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:36:06,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2113749773, now seen corresponding path program 1 times [2022-07-13 14:36:06,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:36:06,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414182710] [2022-07-13 14:36:06,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:36:06,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:36:06,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:36:06,620 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) [2022-07-13 14:36:06,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 14:36:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:36:06,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 14:36:06,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:36:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:36:06,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:36:06,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:36:06,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414182710] [2022-07-13 14:36:06,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414182710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:36:06,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:36:06,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:36:06,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698924600] [2022-07-13 14:36:06,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:36:06,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:36:06,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:36:07,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:36:07,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:36:07,027 INFO L87 Difference]: Start difference. First operand has 94 states, 86 states have (on average 1.6627906976744187) internal successors, (143), 87 states have internal predecessors, (143), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:36:07,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:36:07,057 INFO L93 Difference]: Finished difference Result 185 states and 302 transitions. [2022-07-13 14:36:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:36:07,059 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-13 14:36:07,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:36:07,066 INFO L225 Difference]: With dead ends: 185 [2022-07-13 14:36:07,067 INFO L226 Difference]: Without dead ends: 90 [2022-07-13 14:36:07,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:36:07,075 INFO L413 NwaCegarLoop]: 134 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, 134 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 [2022-07-13 14:36:07,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:36:07,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-13 14:36:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-13 14:36:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 83 states have (on average 1.4578313253012047) internal successors, (121), 83 states have internal predecessors, (121), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:36:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 129 transitions. [2022-07-13 14:36:07,109 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 129 transitions. Word has length 11 [2022-07-13 14:36:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:36:07,109 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 129 transitions. [2022-07-13 14:36:07,110 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), 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) [2022-07-13 14:36:07,110 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 129 transitions. [2022-07-13 14:36:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-13 14:36:07,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:36:07,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:36:07,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 14:36:07,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:36:07,320 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:36:07,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:36:07,321 INFO L85 PathProgramCache]: Analyzing trace with hash -177099114, now seen corresponding path program 1 times [2022-07-13 14:36:07,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:36:07,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442396731] [2022-07-13 14:36:07,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:36:07,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:36:07,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:36:07,324 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) [2022-07-13 14:36:07,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 14:36:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:36:07,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 14:36:07,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:36:08,705 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2022-07-13 14:36:10,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-13 14:36:16,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:36:16,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:36:16,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:36:16,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442396731] [2022-07-13 14:36:16,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442396731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:36:16,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:36:16,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 14:36:16,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029231426] [2022-07-13 14:36:16,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:36:16,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 14:36:16,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:36:16,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 14:36:16,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=41, Unknown=2, NotChecked=0, Total=56 [2022-07-13 14:36:16,614 INFO L87 Difference]: Start difference. First operand 90 states and 129 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:36:20,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:36:20,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:36:20,387 INFO L93 Difference]: Finished difference Result 94 states and 132 transitions. [2022-07-13 14:36:20,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 14:36:20,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-13 14:36:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:36:20,616 INFO L225 Difference]: With dead ends: 94 [2022-07-13 14:36:20,616 INFO L226 Difference]: Without dead ends: 90 [2022-07-13 14:36:20,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=23, Invalid=65, Unknown=2, NotChecked=0, Total=90 [2022-07-13 14:36:20,618 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 5 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 14:36:20,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 786 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 71 Unchecked, 2.8s Time] [2022-07-13 14:36:20,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-13 14:36:20,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-07-13 14:36:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 83 states have internal predecessors, (120), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:36:20,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 128 transitions. [2022-07-13 14:36:20,632 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 128 transitions. Word has length 13 [2022-07-13 14:36:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:36:20,633 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 128 transitions. [2022-07-13 14:36:20,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:36:20,633 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 128 transitions. [2022-07-13 14:36:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 14:36:20,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:36:20,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:36:20,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 14:36:20,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:36:20,844 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:36:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:36:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1590624253, now seen corresponding path program 1 times [2022-07-13 14:36:20,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:36:20,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105095068] [2022-07-13 14:36:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:36:20,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:36:20,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:36:20,848 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) [2022-07-13 14:36:20,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 14:36:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:36:21,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 14:36:21,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:36:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:36:22,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:36:22,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:36:22,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105095068] [2022-07-13 14:36:22,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105095068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:36:22,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:36:22,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 14:36:22,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26950204] [2022-07-13 14:36:22,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:36:22,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 14:36:22,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:36:22,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 14:36:22,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 14:36:22,777 INFO L87 Difference]: Start difference. First operand 90 states and 128 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:36:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:36:23,083 INFO L93 Difference]: Finished difference Result 99 states and 135 transitions. [2022-07-13 14:36:23,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 14:36:23,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 14:36:23,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:36:23,089 INFO L225 Difference]: With dead ends: 99 [2022-07-13 14:36:23,091 INFO L226 Difference]: Without dead ends: 94 [2022-07-13 14:36:23,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:36:23,093 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 63 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:36:23,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 295 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2022-07-13 14:36:23,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-07-13 14:36:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2022-07-13 14:36:23,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 83 states have (on average 1.4337349397590362) internal successors, (119), 83 states have internal predecessors, (119), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:36:23,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 127 transitions. [2022-07-13 14:36:23,110 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 127 transitions. Word has length 18 [2022-07-13 14:36:23,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:36:23,111 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 127 transitions. [2022-07-13 14:36:23,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:36:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 127 transitions. [2022-07-13 14:36:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 14:36:23,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:36:23,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:36:23,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-13 14:36:23,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:36:23,314 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:36:23,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:36:23,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1588777211, now seen corresponding path program 1 times [2022-07-13 14:36:23,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:36:23,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044968460] [2022-07-13 14:36:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:36:23,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:36:23,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:36:23,323 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) [2022-07-13 14:36:23,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-13 14:36:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:36:23,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 14:36:23,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:36:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:36:29,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:36:29,856 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:36:29,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044968460] [2022-07-13 14:36:29,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044968460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:36:29,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:36:29,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 14:36:29,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766542061] [2022-07-13 14:36:29,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:36:29,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 14:36:29,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:36:29,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 14:36:29,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 14:36:29,859 INFO L87 Difference]: Start difference. First operand 90 states and 127 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:36:36,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:36:42,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:36:45,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:36:47,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:36:49,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:36:51,574 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:36:53,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:36:58,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:00,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:02,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:05,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:08,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:10,191 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:12,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:15,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:18,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.98s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:19,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:23,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:23,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:37:23,631 INFO L93 Difference]: Finished difference Result 97 states and 134 transitions. [2022-07-13 14:37:23,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 14:37:23,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 14:37:23,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:37:23,636 INFO L225 Difference]: With dead ends: 97 [2022-07-13 14:37:23,636 INFO L226 Difference]: Without dead ends: 91 [2022-07-13 14:37:23,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 14:37:23,637 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 106 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.6s IncrementalHoareTripleChecker+Time [2022-07-13 14:37:23,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 367 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 12 Unknown, 0 Unchecked, 48.6s Time] [2022-07-13 14:37:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-13 14:37:23,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2022-07-13 14:37:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.4320987654320987) internal successors, (116), 81 states have internal predecessors, (116), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:37:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 124 transitions. [2022-07-13 14:37:23,656 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 124 transitions. Word has length 18 [2022-07-13 14:37:23,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:37:23,657 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 124 transitions. [2022-07-13 14:37:23,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:37:23,657 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 124 transitions. [2022-07-13 14:37:23,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 14:37:23,659 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:37:23,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:37:23,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-13 14:37:23,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:37:23,879 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:37:23,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:37:23,880 INFO L85 PathProgramCache]: Analyzing trace with hash -809284995, now seen corresponding path program 1 times [2022-07-13 14:37:23,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:37:23,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280507603] [2022-07-13 14:37:23,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:37:23,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:37:23,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:37:23,881 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) [2022-07-13 14:37:23,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-13 14:37:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:37:24,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 14:37:24,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:37:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:37:27,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:37:27,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:37:27,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280507603] [2022-07-13 14:37:27,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280507603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:37:27,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:37:27,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 14:37:27,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227266511] [2022-07-13 14:37:27,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:37:27,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 14:37:27,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:37:27,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 14:37:27,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:37:27,087 INFO L87 Difference]: Start difference. First operand 88 states and 124 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:37:31,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:31,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:37:31,567 INFO L93 Difference]: Finished difference Result 177 states and 252 transitions. [2022-07-13 14:37:31,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 14:37:31,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 14:37:31,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:37:31,795 INFO L225 Difference]: With dead ends: 177 [2022-07-13 14:37:31,796 INFO L226 Difference]: Without dead ends: 104 [2022-07-13 14:37:31,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 14:37:31,797 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 23 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-13 14:37:31,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 668 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 1 Unknown, 29 Unchecked, 3.7s Time] [2022-07-13 14:37:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-07-13 14:37:31,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 88. [2022-07-13 14:37:31,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.4197530864197532) internal successors, (115), 81 states have internal predecessors, (115), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:37:31,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 123 transitions. [2022-07-13 14:37:31,806 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 123 transitions. Word has length 18 [2022-07-13 14:37:31,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:37:31,807 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 123 transitions. [2022-07-13 14:37:31,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:37:31,807 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 123 transitions. [2022-07-13 14:37:31,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 14:37:31,808 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:37:31,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:37:31,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-13 14:37:32,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:37:32,019 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:37:32,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:37:32,019 INFO L85 PathProgramCache]: Analyzing trace with hash -752026693, now seen corresponding path program 1 times [2022-07-13 14:37:32,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:37:32,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966446996] [2022-07-13 14:37:32,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:37:32,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:37:32,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:37:32,022 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) [2022-07-13 14:37:32,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-13 14:37:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:37:32,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 14:37:32,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:37:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:37:36,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:37:36,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:37:36,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966446996] [2022-07-13 14:37:36,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966446996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:37:36,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:37:36,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 14:37:36,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786542360] [2022-07-13 14:37:36,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:37:36,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 14:37:36,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:37:36,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 14:37:36,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 14:37:36,813 INFO L87 Difference]: Start difference. First operand 88 states and 123 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:37:41,532 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:41,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:37:41,534 INFO L93 Difference]: Finished difference Result 108 states and 149 transitions. [2022-07-13 14:37:41,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 14:37:41,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 14:37:41,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:37:41,756 INFO L225 Difference]: With dead ends: 108 [2022-07-13 14:37:41,756 INFO L226 Difference]: Without dead ends: 104 [2022-07-13 14:37:41,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-13 14:37:41,757 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 22 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-13 14:37:41,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 659 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 1 Unknown, 28 Unchecked, 3.9s Time] [2022-07-13 14:37:41,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-07-13 14:37:41,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 88. [2022-07-13 14:37:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 81 states have internal predecessors, (114), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:37:41,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 122 transitions. [2022-07-13 14:37:41,788 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 122 transitions. Word has length 18 [2022-07-13 14:37:41,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:37:41,788 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 122 transitions. [2022-07-13 14:37:41,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:37:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 122 transitions. [2022-07-13 14:37:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 14:37:41,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:37:41,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:37:41,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-13 14:37:42,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:37:42,004 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:37:42,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:37:42,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1689344753, now seen corresponding path program 1 times [2022-07-13 14:37:42,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:37:42,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243143290] [2022-07-13 14:37:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:37:42,006 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:37:42,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:37:42,007 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) [2022-07-13 14:37:42,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-13 14:37:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:37:42,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 14:37:42,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:37:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:37:44,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:37:44,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:37:44,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243143290] [2022-07-13 14:37:44,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243143290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:37:44,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:37:44,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 14:37:44,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114550000] [2022-07-13 14:37:44,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:37:44,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 14:37:44,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:37:44,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 14:37:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 14:37:44,879 INFO L87 Difference]: Start difference. First operand 88 states and 122 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:37:48,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:37:48,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:37:48,405 INFO L93 Difference]: Finished difference Result 147 states and 199 transitions. [2022-07-13 14:37:48,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 14:37:48,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 14:37:48,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:37:48,653 INFO L225 Difference]: With dead ends: 147 [2022-07-13 14:37:48,653 INFO L226 Difference]: Without dead ends: 81 [2022-07-13 14:37:48,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 14:37:48,655 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 19 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 14:37:48,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 448 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 12 Unchecked, 2.7s Time] [2022-07-13 14:37:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-07-13 14:37:48,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2022-07-13 14:37:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:37:48,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 101 transitions. [2022-07-13 14:37:48,668 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 101 transitions. Word has length 19 [2022-07-13 14:37:48,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:37:48,668 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 101 transitions. [2022-07-13 14:37:48,668 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), 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) [2022-07-13 14:37:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 101 transitions. [2022-07-13 14:37:48,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 14:37:48,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:37:48,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:37:48,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-13 14:37:48,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:37:48,875 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:37:48,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:37:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1840764148, now seen corresponding path program 1 times [2022-07-13 14:37:48,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:37:48,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614928589] [2022-07-13 14:37:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:37:48,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:37:48,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:37:48,883 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) [2022-07-13 14:37:48,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-13 14:37:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:37:49,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 14:37:49,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:37:50,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2022-07-13 14:37:51,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-13 14:38:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:38:01,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:38:01,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:38:01,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614928589] [2022-07-13 14:38:01,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614928589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:38:01,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:38:01,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 14:38:01,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355383056] [2022-07-13 14:38:01,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:38:01,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 14:38:01,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:38:01,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 14:38:01,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 14:38:01,732 INFO L87 Difference]: Start difference. First operand 77 states and 101 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:38:06,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:06,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:38:06,318 INFO L93 Difference]: Finished difference Result 81 states and 104 transitions. [2022-07-13 14:38:06,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 14:38:06,322 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 14:38:06,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:38:06,323 INFO L225 Difference]: With dead ends: 81 [2022-07-13 14:38:06,323 INFO L226 Difference]: Without dead ends: 77 [2022-07-13 14:38:06,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-13 14:38:06,324 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 5 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 14:38:06,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 646 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 1 Unknown, 46 Unchecked, 3.5s Time] [2022-07-13 14:38:06,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-13 14:38:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-07-13 14:38:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 70 states have internal predecessors, (92), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:38:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2022-07-13 14:38:06,336 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 19 [2022-07-13 14:38:06,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:38:06,336 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2022-07-13 14:38:06,337 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), 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) [2022-07-13 14:38:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2022-07-13 14:38:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-13 14:38:06,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:38:06,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:38:06,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-13 14:38:06,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:38:06,538 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:38:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:38:06,539 INFO L85 PathProgramCache]: Analyzing trace with hash 590719438, now seen corresponding path program 1 times [2022-07-13 14:38:06,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:38:06,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187098562] [2022-07-13 14:38:06,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:38:06,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:38:06,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:38:06,541 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) [2022-07-13 14:38:06,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-13 14:38:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:38:06,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 14:38:06,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:38:13,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:38:13,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:38:13,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:38:13,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187098562] [2022-07-13 14:38:13,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187098562] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:38:13,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:38:13,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 14:38:13,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012301924] [2022-07-13 14:38:13,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:38:13,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 14:38:13,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:38:13,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 14:38:13,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 14:38:13,606 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:38:16,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:24,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:26,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:28,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:32,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:37,345 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:38,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:41,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:43,760 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:46,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:48,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:50,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:52,787 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:55,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:38:58,722 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:39:01,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:39:04,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:39:06,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:39:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:39:07,208 INFO L93 Difference]: Finished difference Result 89 states and 111 transitions. [2022-07-13 14:39:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 14:39:07,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-13 14:39:07,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:39:07,211 INFO L225 Difference]: With dead ends: 89 [2022-07-13 14:39:07,211 INFO L226 Difference]: Without dead ends: 84 [2022-07-13 14:39:07,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-13 14:39:07,212 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 76 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.9s IncrementalHoareTripleChecker+Time [2022-07-13 14:39:07,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 297 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 15 Unknown, 0 Unchecked, 48.9s Time] [2022-07-13 14:39:07,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-07-13 14:39:07,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 77. [2022-07-13 14:39:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:39:07,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2022-07-13 14:39:07,218 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 20 [2022-07-13 14:39:07,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:39:07,218 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2022-07-13 14:39:07,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:39:07,218 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2022-07-13 14:39:07,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-13 14:39:07,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:39:07,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:39:07,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-13 14:39:07,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:39:07,433 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:39:07,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:39:07,434 INFO L85 PathProgramCache]: Analyzing trace with hash 592566480, now seen corresponding path program 1 times [2022-07-13 14:39:07,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:39:07,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888124984] [2022-07-13 14:39:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:39:07,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:39:07,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:39:07,436 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) [2022-07-13 14:39:07,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-13 14:39:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:39:07,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 14:39:07,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:39:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:39:09,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:39:09,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:39:09,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888124984] [2022-07-13 14:39:09,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888124984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:39:09,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:39:09,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 14:39:09,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314303884] [2022-07-13 14:39:09,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:39:09,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 14:39:09,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:39:09,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 14:39:09,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 14:39:09,761 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:39:12,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:39:12,101 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2022-07-13 14:39:12,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 14:39:12,102 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-13 14:39:12,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:39:12,103 INFO L225 Difference]: With dead ends: 81 [2022-07-13 14:39:12,103 INFO L226 Difference]: Without dead ends: 75 [2022-07-13 14:39:12,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:39:12,104 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 36 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:39:12,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 231 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2022-07-13 14:39:12,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-13 14:39:12,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-07-13 14:39:12,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 68 states have (on average 1.2941176470588236) internal successors, (88), 68 states have internal predecessors, (88), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:39:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 96 transitions. [2022-07-13 14:39:12,109 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 96 transitions. Word has length 20 [2022-07-13 14:39:12,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:39:12,110 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 96 transitions. [2022-07-13 14:39:12,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:39:12,110 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 96 transitions. [2022-07-13 14:39:12,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-13 14:39:12,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:39:12,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:39:12,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-13 14:39:12,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:39:12,316 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:39:12,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:39:12,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1231737930, now seen corresponding path program 1 times [2022-07-13 14:39:12,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:39:12,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017453213] [2022-07-13 14:39:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:39:12,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:39:12,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:39:12,318 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) [2022-07-13 14:39:12,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-13 14:39:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:39:12,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 14:39:12,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:39:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:39:18,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:39:18,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:39:18,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017453213] [2022-07-13 14:39:18,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017453213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:39:18,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:39:18,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 14:39:18,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676165903] [2022-07-13 14:39:18,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:39:18,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 14:39:18,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:39:18,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 14:39:18,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=12, Unknown=1, NotChecked=0, Total=20 [2022-07-13 14:39:18,144 INFO L87 Difference]: Start difference. First operand 75 states and 96 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:39:23,205 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:39:23,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:39:23,210 INFO L93 Difference]: Finished difference Result 134 states and 171 transitions. [2022-07-13 14:39:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 14:39:23,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-13 14:39:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:39:23,459 INFO L225 Difference]: With dead ends: 134 [2022-07-13 14:39:23,459 INFO L226 Difference]: Without dead ends: 73 [2022-07-13 14:39:23,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=11, Invalid=17, Unknown=2, NotChecked=0, Total=30 [2022-07-13 14:39:23,460 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 7 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 14:39:23,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 322 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 16 Unchecked, 2.7s Time] [2022-07-13 14:39:23,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-13 14:39:23,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2022-07-13 14:39:23,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 62 states have internal predecessors, (80), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:39:23,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2022-07-13 14:39:23,465 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 20 [2022-07-13 14:39:23,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:39:23,466 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2022-07-13 14:39:23,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:39:23,466 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2022-07-13 14:39:23,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-13 14:39:23,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:39:23,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:39:23,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-07-13 14:39:23,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:39:23,673 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:39:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:39:23,673 INFO L85 PathProgramCache]: Analyzing trace with hash 802050970, now seen corresponding path program 1 times [2022-07-13 14:39:23,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:39:23,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537529198] [2022-07-13 14:39:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:39:23,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:39:23,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:39:23,675 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) [2022-07-13 14:39:23,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-13 14:39:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:39:24,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 14:39:24,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:39:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:39:28,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:39:28,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:39:28,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537529198] [2022-07-13 14:39:28,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537529198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:39:28,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:39:28,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 14:39:28,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556216694] [2022-07-13 14:39:28,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:39:28,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 14:39:28,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:39:28,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 14:39:28,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:39:28,076 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-07-13 14:39:30,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:39:32,252 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:39:32,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:39:32,322 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2022-07-13 14:39:32,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 14:39:32,323 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-13 14:39:32,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:39:32,323 INFO L225 Difference]: With dead ends: 73 [2022-07-13 14:39:32,323 INFO L226 Difference]: Without dead ends: 69 [2022-07-13 14:39:32,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 14:39:32,324 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 9 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-13 14:39:32,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 450 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 13 Unchecked, 3.4s Time] [2022-07-13 14:39:32,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-13 14:39:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-07-13 14:39:32,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:39:32,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2022-07-13 14:39:32,330 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 21 [2022-07-13 14:39:32,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:39:32,330 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2022-07-13 14:39:32,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-07-13 14:39:32,331 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2022-07-13 14:39:32,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-13 14:39:32,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:39:32,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:39:32,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-13 14:39:32,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:39:32,537 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:39:32,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:39:32,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2015754869, now seen corresponding path program 1 times [2022-07-13 14:39:32,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:39:32,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086900503] [2022-07-13 14:39:32,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:39:32,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:39:32,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:39:32,539 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:39:32,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-13 14:39:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:39:33,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 14:39:33,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:39:34,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2022-07-13 14:39:35,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-13 14:39:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:39:49,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:39:49,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:39:49,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086900503] [2022-07-13 14:39:49,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086900503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:39:49,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:39:49,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 14:39:49,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494545385] [2022-07-13 14:39:49,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:39:49,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 14:39:49,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:39:49,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 14:39:49,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=86, Unknown=1, NotChecked=0, Total=110 [2022-07-13 14:39:49,921 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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) [2022-07-13 14:39:55,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:39:55,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:39:55,183 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2022-07-13 14:39:55,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 14:39:55,184 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-07-13 14:39:55,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:39:55,184 INFO L225 Difference]: With dead ends: 73 [2022-07-13 14:39:55,184 INFO L226 Difference]: Without dead ends: 69 [2022-07-13 14:39:55,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=33, Invalid=121, Unknown=2, NotChecked=0, Total=156 [2022-07-13 14:39:55,185 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 11 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 14:39:55,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 523 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 50 Unchecked, 2.1s Time] [2022-07-13 14:39:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-13 14:39:55,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-07-13 14:39:55,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 62 states have internal predecessors, (78), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-13 14:39:55,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 86 transitions. [2022-07-13 14:39:55,191 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 86 transitions. Word has length 23 [2022-07-13 14:39:55,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:39:55,192 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 86 transitions. [2022-07-13 14:39:55,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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) [2022-07-13 14:39:55,194 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 86 transitions. [2022-07-13 14:39:55,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-13 14:39:55,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:39:55,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:39:55,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-13 14:39:55,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:39:55,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:39:55,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:39:55,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1934442787, now seen corresponding path program 1 times [2022-07-13 14:39:55,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:39:55,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100188098] [2022-07-13 14:39:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:39:55,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:39:55,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:39:55,398 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:39:55,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-13 14:39:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:39:56,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 14:39:56,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:39:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:39:59,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:39:59,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:39:59,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100188098] [2022-07-13 14:39:59,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100188098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:39:59,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:39:59,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 14:39:59,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947741146] [2022-07-13 14:39:59,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:39:59,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 14:39:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:39:59,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 14:39:59,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 14:39:59,399 INFO L87 Difference]: Start difference. First operand 69 states and 86 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2022-07-13 14:40:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:40:00,238 INFO L93 Difference]: Finished difference Result 105 states and 131 transitions. [2022-07-13 14:40:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 14:40:00,238 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-13 14:40:00,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:40:00,239 INFO L225 Difference]: With dead ends: 105 [2022-07-13 14:40:00,239 INFO L226 Difference]: Without dead ends: 49 [2022-07-13 14:40:00,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-13 14:40:00,240 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 5 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 14:40:00,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 267 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2022-07-13 14:40:00,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-07-13 14:40:00,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-07-13 14:40:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.25) internal successors, (55), 44 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-13 14:40:00,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2022-07-13 14:40:00,244 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 24 [2022-07-13 14:40:00,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:40:00,244 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2022-07-13 14:40:00,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2022-07-13 14:40:00,244 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2022-07-13 14:40:00,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 14:40:00,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:40:00,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:40:00,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-13 14:40:00,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:40:00,448 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:40:00,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:40:00,448 INFO L85 PathProgramCache]: Analyzing trace with hash 497810342, now seen corresponding path program 1 times [2022-07-13 14:40:00,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:40:00,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125892878] [2022-07-13 14:40:00,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:40:00,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:40:00,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:40:00,450 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:40:00,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-13 14:40:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:40:00,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 14:40:00,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:40:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:40:02,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:40:02,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:40:02,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125892878] [2022-07-13 14:40:02,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125892878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:40:02,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:40:02,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 14:40:02,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84388210] [2022-07-13 14:40:02,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:40:02,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 14:40:02,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:40:02,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 14:40:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:40:02,509 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2022-07-13 14:40:03,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:40:03,273 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-07-13 14:40:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 14:40:03,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 26 [2022-07-13 14:40:03,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:40:03,273 INFO L225 Difference]: With dead ends: 49 [2022-07-13 14:40:03,273 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 14:40:03,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:40:03,274 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 14:40:03,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 2 Unchecked, 0.1s Time] [2022-07-13 14:40:03,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 14:40:03,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 14:40:03,275 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) [2022-07-13 14:40:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 14:40:03,275 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-07-13 14:40:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:40:03,275 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 14:40:03,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2022-07-13 14:40:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 14:40:03,275 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 14:40:03,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:40:03,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-13 14:40:03,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:40:03,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.