./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_0661a.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 97db4649e1472818bc0988249575733f0ee094f6677a6f3f19d9bb4aec20f92d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:11:57,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:11:57,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:11:57,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:11:57,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:11:57,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:11:57,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:11:57,258 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:11:57,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:11:57,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:11:57,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:11:57,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:11:57,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:11:57,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:11:57,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:11:57,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:11:57,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:11:57,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:11:57,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:11:57,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:11:57,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:11:57,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:11:57,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:11:57,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:11:57,288 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:11:57,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:11:57,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:11:57,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:11:57,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:11:57,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:11:57,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:11:57,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:11:57,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:11:57,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:11:57,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:11:57,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:11:57,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:11:57,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:11:57,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:11:57,296 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:11:57,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:11:57,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 10:11:57,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:11:57,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:11:57,329 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:11:57,330 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:11:57,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:11:57,331 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:11:57,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:11:57,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:11:57,331 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:11:57,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:11:57,332 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:11:57,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 10:11:57,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:11:57,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:11:57,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:11:57,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:11:57,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:11:57,334 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:11:57,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:11:57,334 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:11:57,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:11:57,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:11:57,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:11:57,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:11:57,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:11:57,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:11:57,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:11:57,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:11:57,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 10:11:57,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 10:11:57,337 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:11:57,337 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:11:57,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:11:57,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:11:57,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97db4649e1472818bc0988249575733f0ee094f6677a6f3f19d9bb4aec20f92d [2021-12-22 10:11:57,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:11:57,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:11:57,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:11:57,566 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:11:57,566 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:11:57,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c [2021-12-22 10:11:57,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0d81698/0f05673d17b642449accf2e333f225b0/FLAG80c9cf393 [2021-12-22 10:11:58,006 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:11:58,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c [2021-12-22 10:11:58,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0d81698/0f05673d17b642449accf2e333f225b0/FLAG80c9cf393 [2021-12-22 10:11:58,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0d81698/0f05673d17b642449accf2e333f225b0 [2021-12-22 10:11:58,021 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:11:58,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:11:58,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:11:58,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:11:58,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:11:58,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:11:58" (1/1) ... [2021-12-22 10:11:58,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f780c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58, skipping insertion in model container [2021-12-22 10:11:58,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:11:58" (1/1) ... [2021-12-22 10:11:58,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:11:58,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:11:58,230 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_0661a.c[6446,6459] [2021-12-22 10:11:58,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:11:58,252 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:11:58,303 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_0661a.c[6446,6459] [2021-12-22 10:11:58,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:11:58,315 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:11:58,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58 WrapperNode [2021-12-22 10:11:58,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:11:58,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:11:58,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:11:58,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:11:58,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58" (1/1) ... [2021-12-22 10:11:58,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58" (1/1) ... [2021-12-22 10:11:58,370 INFO L137 Inliner]: procedures = 20, calls = 92, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 251 [2021-12-22 10:11:58,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:11:58,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:11:58,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:11:58,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:11:58,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58" (1/1) ... [2021-12-22 10:11:58,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58" (1/1) ... [2021-12-22 10:11:58,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58" (1/1) ... [2021-12-22 10:11:58,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58" (1/1) ... [2021-12-22 10:11:58,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58" (1/1) ... [2021-12-22 10:11:58,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58" (1/1) ... [2021-12-22 10:11:58,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58" (1/1) ... [2021-12-22 10:11:58,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:11:58,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:11:58,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:11:58,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:11:58,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58" (1/1) ... [2021-12-22 10:11:58,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:11:58,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:11:58,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 10:11:58,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 10:11:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:11:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 10:11:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 10:11:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-22 10:11:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 10:11:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-12-22 10:11:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-12-22 10:11:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-22 10:11:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2021-12-22 10:11:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2021-12-22 10:11:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:11:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:11:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 10:11:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-12-22 10:11:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 10:11:58,596 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:11:58,598 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:11:58,920 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:11:58,925 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:11:58,928 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-12-22 10:11:58,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:11:58 BoogieIcfgContainer [2021-12-22 10:11:58,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:11:58,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:11:58,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:11:58,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:11:58,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:11:58" (1/3) ... [2021-12-22 10:11:58,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f73209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:11:58, skipping insertion in model container [2021-12-22 10:11:58,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:11:58" (2/3) ... [2021-12-22 10:11:58,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f73209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:11:58, skipping insertion in model container [2021-12-22 10:11:58,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:11:58" (3/3) ... [2021-12-22 10:11:58,937 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661a.c [2021-12-22 10:11:58,940 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:11:58,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:11:58,975 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:11:58,979 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:11:58,979 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:11:58,998 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 92 states have internal predecessors, (151), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-22 10:11:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 10:11:59,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:11:59,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:11:59,003 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:11:59,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:11:59,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1101750833, now seen corresponding path program 1 times [2021-12-22 10:11:59,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:11:59,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808989129] [2021-12-22 10:11:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:11:59,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:11:59,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:11:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:11:59,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:11:59,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808989129] [2021-12-22 10:11:59,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808989129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:11:59,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:11:59,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 10:11:59,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520808797] [2021-12-22 10:11:59,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:11:59,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 10:11:59,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:11:59,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 10:11:59,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:11:59,155 INFO L87 Difference]: Start difference. First operand has 99 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 92 states have internal predecessors, (151), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:11:59,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:11:59,199 INFO L93 Difference]: Finished difference Result 195 states and 318 transitions. [2021-12-22 10:11:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 10:11:59,201 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-22 10:11:59,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:11:59,205 INFO L225 Difference]: With dead ends: 195 [2021-12-22 10:11:59,206 INFO L226 Difference]: Without dead ends: 95 [2021-12-22 10:11:59,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:11:59,210 INFO L933 BasicCegarLoop]: 140 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, 140 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 10:11:59,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:11:59,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-22 10:11:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-12-22 10:11:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4431818181818181) internal successors, (127), 88 states have internal predecessors, (127), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-22 10:11:59,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 135 transitions. [2021-12-22 10:11:59,243 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 135 transitions. Word has length 12 [2021-12-22 10:11:59,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:11:59,243 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 135 transitions. [2021-12-22 10:11:59,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:11:59,243 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 135 transitions. [2021-12-22 10:11:59,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-22 10:11:59,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:11:59,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:11:59,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 10:11:59,245 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:11:59,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:11:59,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1195087928, now seen corresponding path program 1 times [2021-12-22 10:11:59,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:11:59,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762967198] [2021-12-22 10:11:59,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:11:59,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:11:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:11:59,297 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 10:11:59,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:11:59,345 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 10:11:59,345 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 10:11:59,347 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 10:11:59,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 10:11:59,350 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 10:11:59,352 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 10:11:59,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:11:59 BoogieIcfgContainer [2021-12-22 10:11:59,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 10:11:59,399 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 10:11:59,399 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 10:11:59,399 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 10:11:59,400 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:11:58" (3/4) ... [2021-12-22 10:11:59,401 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 10:11:59,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 10:11:59,402 INFO L158 Benchmark]: Toolchain (without parser) took 1379.67ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 53.7MB in the beginning and 65.6MB in the end (delta: -11.9MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-12-22 10:11:59,403 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:11:59,404 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.68ms. Allocated memory is still 90.2MB. Free memory was 53.5MB in the beginning and 62.6MB in the end (delta: -9.1MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-12-22 10:11:59,407 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.67ms. Allocated memory is still 90.2MB. Free memory was 62.6MB in the beginning and 60.2MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-22 10:11:59,407 INFO L158 Benchmark]: Boogie Preprocessor took 45.85ms. Allocated memory is still 90.2MB. Free memory was 60.2MB in the beginning and 57.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:11:59,407 INFO L158 Benchmark]: RCFGBuilder took 512.71ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 57.6MB in the beginning and 74.4MB in the end (delta: -16.8MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2021-12-22 10:11:59,408 INFO L158 Benchmark]: TraceAbstraction took 466.88ms. Allocated memory is still 109.1MB. Free memory was 74.0MB in the beginning and 66.3MB in the end (delta: 7.7MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2021-12-22 10:11:59,409 INFO L158 Benchmark]: Witness Printer took 2.71ms. Allocated memory is still 109.1MB. Free memory was 66.3MB in the beginning and 65.6MB in the end (delta: 690.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:11:59,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 90.2MB. Free memory is still 70.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.68ms. Allocated memory is still 90.2MB. Free memory was 53.5MB in the beginning and 62.6MB in the end (delta: -9.1MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.67ms. Allocated memory is still 90.2MB. Free memory was 62.6MB in the beginning and 60.2MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.85ms. Allocated memory is still 90.2MB. Free memory was 60.2MB in the beginning and 57.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 512.71ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 57.6MB in the beginning and 74.4MB in the end (delta: -16.8MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * TraceAbstraction took 466.88ms. Allocated memory is still 109.1MB. Free memory was 74.0MB in the beginning and 66.3MB in the end (delta: 7.7MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Witness Printer took 2.71ms. Allocated memory is still 109.1MB. Free memory was 66.3MB in the beginning and 65.6MB in the end (delta: 690.2kB). Peak memory consumption was 2.1MB. 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: 273]: 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 267, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 272. 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] [L266] double x = __VERIFIER_nondet_double(); [L267] double y = -0.0; 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] [L269] COND TRUE x > 0.0 [L270] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, hy=-1, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, ly=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, hy=-1, lx=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, ly=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L270] RET, EXPR __ieee754_atan2(y, x) [L270] double res = __ieee754_atan2(y, x); [L272] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, res == -0.0 && __signbit_double(res) == 1=0, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] [L272] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L273] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 140 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, 140 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=99occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-22 10:11:59,457 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_0661a.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 97db4649e1472818bc0988249575733f0ee094f6677a6f3f19d9bb4aec20f92d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:12:01,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:12:01,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:12:01,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:12:01,201 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:12:01,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:12:01,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:12:01,209 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:12:01,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:12:01,215 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:12:01,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:12:01,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:12:01,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:12:01,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:12:01,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:12:01,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:12:01,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:12:01,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:12:01,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:12:01,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:12:01,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:12:01,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:12:01,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:12:01,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:12:01,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:12:01,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:12:01,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:12:01,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:12:01,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:12:01,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:12:01,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:12:01,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:12:01,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:12:01,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:12:01,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:12:01,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:12:01,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:12:01,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:12:01,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:12:01,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:12:01,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:12:01,251 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 10:12:01,279 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:12:01,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:12:01,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:12:01,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:12:01,282 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:12:01,282 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:12:01,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:12:01,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:12:01,284 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:12:01,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:12:01,285 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:12:01,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:12:01,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:12:01,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:12:01,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:12:01,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:12:01,285 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 10:12:01,286 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 10:12:01,286 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 10:12:01,286 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:12:01,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:12:01,286 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:12:01,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:12:01,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:12:01,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:12:01,287 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:12:01,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:12:01,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:12:01,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:12:01,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:12:01,288 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 10:12:01,288 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 10:12:01,288 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:12:01,288 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:12:01,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:12:01,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:12:01,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 10:12:01,289 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97db4649e1472818bc0988249575733f0ee094f6677a6f3f19d9bb4aec20f92d [2021-12-22 10:12:01,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:12:01,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:12:01,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:12:01,541 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:12:01,542 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:12:01,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0661a.c [2021-12-22 10:12:01,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e74df9d3e/a96c7b849271479f9745a72c8a062822/FLAGb0ddb9bc0 [2021-12-22 10:12:01,988 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:12:01,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0661a.c [2021-12-22 10:12:02,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e74df9d3e/a96c7b849271479f9745a72c8a062822/FLAGb0ddb9bc0 [2021-12-22 10:12:02,021 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e74df9d3e/a96c7b849271479f9745a72c8a062822 [2021-12-22 10:12:02,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:12:02,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:12:02,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:12:02,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:12:02,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:12:02,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:12:02" (1/1) ... [2021-12-22 10:12:02,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb321aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02, skipping insertion in model container [2021-12-22 10:12:02,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:12:02" (1/1) ... [2021-12-22 10:12:02,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:12:02,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:12:02,252 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_0661a.c[6446,6459] [2021-12-22 10:12:02,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:12:02,269 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:12:02,338 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_0661a.c[6446,6459] [2021-12-22 10:12:02,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:12:02,351 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:12:02,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02 WrapperNode [2021-12-22 10:12:02,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:12:02,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:12:02,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:12:02,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:12:02,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02" (1/1) ... [2021-12-22 10:12:02,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02" (1/1) ... [2021-12-22 10:12:02,411 INFO L137 Inliner]: procedures = 23, calls = 92, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 251 [2021-12-22 10:12:02,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:12:02,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:12:02,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:12:02,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:12:02,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02" (1/1) ... [2021-12-22 10:12:02,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02" (1/1) ... [2021-12-22 10:12:02,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02" (1/1) ... [2021-12-22 10:12:02,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02" (1/1) ... [2021-12-22 10:12:02,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02" (1/1) ... [2021-12-22 10:12:02,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02" (1/1) ... [2021-12-22 10:12:02,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02" (1/1) ... [2021-12-22 10:12:02,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:12:02,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:12:02,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:12:02,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:12:02,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02" (1/1) ... [2021-12-22 10:12:02,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:12:02,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:12:02,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 10:12:02,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 10:12:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:12:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-22 10:12:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-22 10:12:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 10:12:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 10:12:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-12-22 10:12:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-12-22 10:12:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-12-22 10:12:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2021-12-22 10:12:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2021-12-22 10:12:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-22 10:12:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:12:02,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:12:02,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-22 10:12:02,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 10:12:02,675 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:12:02,676 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:12:23,696 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:12:23,701 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:12:23,701 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-12-22 10:12:23,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:12:23 BoogieIcfgContainer [2021-12-22 10:12:23,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:12:23,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:12:23,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:12:23,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:12:23,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:12:02" (1/3) ... [2021-12-22 10:12:23,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b82777d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:12:23, skipping insertion in model container [2021-12-22 10:12:23,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:12:02" (2/3) ... [2021-12-22 10:12:23,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b82777d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:12:23, skipping insertion in model container [2021-12-22 10:12:23,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:12:23" (3/3) ... [2021-12-22 10:12:23,711 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0661a.c [2021-12-22 10:12:23,716 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:12:23,716 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:12:23,749 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:12:23,754 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 10:12:23,755 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:12:23,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 92 states have internal predecessors, (151), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-22 10:12:23,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 10:12:23,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:12:23,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:12:23,772 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:12:23,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:12:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1101750833, now seen corresponding path program 1 times [2021-12-22 10:12:23,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:12:23,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348701007] [2021-12-22 10:12:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:12:23,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:12:23,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:12:23,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:12:23,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 10:12:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:12:24,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 10:12:24,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:12:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:12:24,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:12:24,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:12:24,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348701007] [2021-12-22 10:12:24,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348701007] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:12:24,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:12:24,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 10:12:24,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997390140] [2021-12-22 10:12:24,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:12:24,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 10:12:24,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:12:24,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 10:12:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:12:24,373 INFO L87 Difference]: Start difference. First operand has 99 states, 91 states have (on average 1.6593406593406594) internal successors, (151), 92 states have internal predecessors, (151), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:12:24,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:12:24,393 INFO L93 Difference]: Finished difference Result 195 states and 318 transitions. [2021-12-22 10:12:24,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 10:12:24,394 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-22 10:12:24,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:12:24,399 INFO L225 Difference]: With dead ends: 195 [2021-12-22 10:12:24,400 INFO L226 Difference]: Without dead ends: 95 [2021-12-22 10:12:24,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:12:24,405 INFO L933 BasicCegarLoop]: 140 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, 140 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 10:12:24,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:12:24,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-22 10:12:24,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-12-22 10:12:24,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4431818181818181) internal successors, (127), 88 states have internal predecessors, (127), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-22 10:12:24,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 135 transitions. [2021-12-22 10:12:24,438 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 135 transitions. Word has length 12 [2021-12-22 10:12:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:12:24,438 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 135 transitions. [2021-12-22 10:12:24,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:12:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 135 transitions. [2021-12-22 10:12:24,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-22 10:12:24,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:12:24,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:12:24,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-22 10:12:24,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:12:24,662 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:12:24,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:12:24,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1195087928, now seen corresponding path program 1 times [2021-12-22 10:12:24,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:12:24,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182878303] [2021-12-22 10:12:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:12:24,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:12:24,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:12:24,667 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:12:24,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 10:12:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:12:25,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-22 10:12:25,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:12:26,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-12-22 10:12:29,428 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 10:12:29,428 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-12-22 10:12:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:12:31,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:12:31,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:12:31,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182878303] [2021-12-22 10:12:31,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182878303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:12:31,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:12:31,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 10:12:31,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348669255] [2021-12-22 10:12:31,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:12:31,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 10:12:31,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:12:31,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 10:12:31,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 10:12:31,379 INFO L87 Difference]: Start difference. First operand 95 states and 135 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:12:32,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:12:32,642 INFO L93 Difference]: Finished difference Result 104 states and 144 transitions. [2021-12-22 10:12:32,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 10:12:32,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-22 10:12:32,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:12:32,644 INFO L225 Difference]: With dead ends: 104 [2021-12-22 10:12:32,644 INFO L226 Difference]: Without dead ends: 95 [2021-12-22 10:12:32,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-22 10:12:32,645 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 5 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 10:12:32,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 828 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 73 Unchecked, 0.1s Time] [2021-12-22 10:12:32,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-22 10:12:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-12-22 10:12:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 88 states have internal predecessors, (126), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-22 10:12:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 134 transitions. [2021-12-22 10:12:32,652 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 134 transitions. Word has length 14 [2021-12-22 10:12:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:12:32,652 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 134 transitions. [2021-12-22 10:12:32,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:12:32,653 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 134 transitions. [2021-12-22 10:12:32,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 10:12:32,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:12:32,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:12:32,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-22 10:12:32,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:12:32,860 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:12:32,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:12:32,860 INFO L85 PathProgramCache]: Analyzing trace with hash 2064728897, now seen corresponding path program 1 times [2021-12-22 10:12:32,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:12:32,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351858813] [2021-12-22 10:12:32,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:12:32,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:12:32,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:12:32,862 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:12:32,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-22 10:12:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:12:33,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 10:12:33,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:12:34,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:12:34,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:12:34,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:12:34,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351858813] [2021-12-22 10:12:34,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [351858813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:12:34,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:12:34,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 10:12:34,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241275436] [2021-12-22 10:12:34,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:12:34,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 10:12:34,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:12:34,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 10:12:34,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 10:12:34,994 INFO L87 Difference]: Start difference. First operand 95 states and 134 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:12:35,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:12:35,567 INFO L93 Difference]: Finished difference Result 114 states and 153 transitions. [2021-12-22 10:12:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 10:12:35,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 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 [2021-12-22 10:12:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:12:35,568 INFO L225 Difference]: With dead ends: 114 [2021-12-22 10:12:35,568 INFO L226 Difference]: Without dead ends: 104 [2021-12-22 10:12:35,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 10:12:35,569 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 75 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 456 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 [2021-12-22 10:12:35,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 456 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2021-12-22 10:12:35,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-22 10:12:35,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2021-12-22 10:12:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 88 states have internal predecessors, (125), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-22 10:12:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 133 transitions. [2021-12-22 10:12:35,588 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 133 transitions. Word has length 19 [2021-12-22 10:12:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:12:35,588 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 133 transitions. [2021-12-22 10:12:35,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:12:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 133 transitions. [2021-12-22 10:12:35,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 10:12:35,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:12:35,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:12:35,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-22 10:12:35,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:12:35,800 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:12:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:12:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2007470595, now seen corresponding path program 1 times [2021-12-22 10:12:35,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:12:35,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159189645] [2021-12-22 10:12:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:12:35,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:12:35,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:12:35,802 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:12:35,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-22 10:12:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:12:36,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 10:12:36,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:12:36,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-22 10:12:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:12:38,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:12:38,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:12:38,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159189645] [2021-12-22 10:12:38,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159189645] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:12:38,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:12:38,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 10:12:38,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009874204] [2021-12-22 10:12:38,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:12:38,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 10:12:38,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:12:38,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 10:12:38,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 10:12:38,597 INFO L87 Difference]: Start difference. First operand 95 states and 133 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:12:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:12:39,294 INFO L93 Difference]: Finished difference Result 179 states and 248 transitions. [2021-12-22 10:12:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 10:12:39,295 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 [2021-12-22 10:12:39,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:12:39,296 INFO L225 Difference]: With dead ends: 179 [2021-12-22 10:12:39,296 INFO L226 Difference]: Without dead ends: 104 [2021-12-22 10:12:39,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-22 10:12:39,297 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 19 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 10:12:39,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 647 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-12-22 10:12:39,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-22 10:12:39,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2021-12-22 10:12:39,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.4090909090909092) internal successors, (124), 88 states have internal predecessors, (124), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-22 10:12:39,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 132 transitions. [2021-12-22 10:12:39,303 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 132 transitions. Word has length 19 [2021-12-22 10:12:39,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:12:39,304 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 132 transitions. [2021-12-22 10:12:39,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:12:39,304 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 132 transitions. [2021-12-22 10:12:39,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 10:12:39,305 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:12:39,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:12:39,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-22 10:12:39,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:12:39,520 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:12:39,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:12:39,521 INFO L85 PathProgramCache]: Analyzing trace with hash 681986241, now seen corresponding path program 1 times [2021-12-22 10:12:39,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:12:39,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285140056] [2021-12-22 10:12:39,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:12:39,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:12:39,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:12:39,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:12:39,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-22 10:12:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:12:39,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 10:12:39,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:12:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:12:42,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:12:42,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:12:42,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285140056] [2021-12-22 10:12:42,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285140056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:12:42,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:12:42,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 10:12:42,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668128538] [2021-12-22 10:12:42,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:12:42,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 10:12:42,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:12:42,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 10:12:42,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 10:12:42,257 INFO L87 Difference]: Start difference. First operand 95 states and 132 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:12:44,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:12:44,306 INFO L93 Difference]: Finished difference Result 184 states and 255 transitions. [2021-12-22 10:12:44,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 10:12:44,307 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 [2021-12-22 10:12:44,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:12:44,308 INFO L225 Difference]: With dead ends: 184 [2021-12-22 10:12:44,308 INFO L226 Difference]: Without dead ends: 104 [2021-12-22 10:12:44,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-22 10:12:44,309 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 20 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 10:12:44,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 751 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 26 Unchecked, 1.4s Time] [2021-12-22 10:12:44,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-22 10:12:44,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2021-12-22 10:12:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 88 states have (on average 1.3977272727272727) internal successors, (123), 88 states have internal predecessors, (123), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-22 10:12:44,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 131 transitions. [2021-12-22 10:12:44,320 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 131 transitions. Word has length 19 [2021-12-22 10:12:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:12:44,321 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 131 transitions. [2021-12-22 10:12:44,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:12:44,321 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 131 transitions. [2021-12-22 10:12:44,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 10:12:44,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:12:44,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:12:44,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-22 10:12:44,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:12:44,535 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:12:44,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:12:44,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1837973693, now seen corresponding path program 1 times [2021-12-22 10:12:44,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:12:44,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100558626] [2021-12-22 10:12:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:12:44,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:12:44,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:12:44,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:12:44,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-22 10:12:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:12:44,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 10:12:44,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:12:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:12:46,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:12:46,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:12:46,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100558626] [2021-12-22 10:12:46,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100558626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:12:46,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:12:46,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 10:12:46,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265153654] [2021-12-22 10:12:46,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:12:46,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 10:12:46,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:12:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 10:12:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 10:12:46,434 INFO L87 Difference]: Start difference. First operand 95 states and 131 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:12:51,078 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:12:52,769 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:12:55,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:12:55,431 INFO L93 Difference]: Finished difference Result 107 states and 142 transitions. [2021-12-22 10:12:55,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 10:12:55,431 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 [2021-12-22 10:12:55,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:12:55,432 INFO L225 Difference]: With dead ends: 107 [2021-12-22 10:12:55,432 INFO L226 Difference]: Without dead ends: 104 [2021-12-22 10:12:55,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-22 10:12:55,433 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 177 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-12-22 10:12:55,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 451 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-12-22 10:12:55,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-22 10:12:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2021-12-22 10:12:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 90 states have internal predecessors, (125), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-22 10:12:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 133 transitions. [2021-12-22 10:12:55,440 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 133 transitions. Word has length 19 [2021-12-22 10:12:55,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:12:55,440 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 133 transitions. [2021-12-22 10:12:55,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:12:55,440 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 133 transitions. [2021-12-22 10:12:55,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-22 10:12:55,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:12:55,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:12:55,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-22 10:12:55,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:12:55,648 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:12:55,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:12:55,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1229096430, now seen corresponding path program 1 times [2021-12-22 10:12:55,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:12:55,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35870568] [2021-12-22 10:12:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:12:55,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:12:55,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:12:55,654 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:12:55,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-22 10:12:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:12:55,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-22 10:12:55,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:12:56,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2021-12-22 10:12:58,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-22 10:13:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:13:03,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:13:03,199 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:13:03,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35870568] [2021-12-22 10:13:03,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35870568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:13:03,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:13:03,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 10:13:03,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142548665] [2021-12-22 10:13:03,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:13:03,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 10:13:03,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:13:03,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 10:13:03,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-22 10:13:03,201 INFO L87 Difference]: Start difference. First operand 97 states and 133 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:13:04,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:13:04,498 INFO L93 Difference]: Finished difference Result 145 states and 190 transitions. [2021-12-22 10:13:04,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 10:13:04,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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 [2021-12-22 10:13:04,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:13:04,499 INFO L225 Difference]: With dead ends: 145 [2021-12-22 10:13:04,499 INFO L226 Difference]: Without dead ends: 67 [2021-12-22 10:13:04,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-22 10:13:04,500 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 14 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 10:13:04,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 402 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 27 Unchecked, 0.2s Time] [2021-12-22 10:13:04,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-12-22 10:13:04,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2021-12-22 10:13:04,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 55 states have internal predecessors, (68), 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) [2021-12-22 10:13:04,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2021-12-22 10:13:04,508 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 20 [2021-12-22 10:13:04,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:13:04,508 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2021-12-22 10:13:04,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:13:04,508 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2021-12-22 10:13:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 10:13:04,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:13:04,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:13:04,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-22 10:13:04,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:13:04,723 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:13:04,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:13:04,724 INFO L85 PathProgramCache]: Analyzing trace with hash -264541864, now seen corresponding path program 1 times [2021-12-22 10:13:04,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:13:04,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688413184] [2021-12-22 10:13:04,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:13:04,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:13:04,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:13:04,726 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:13:04,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-22 10:13:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:13:05,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 10:13:05,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:13:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:13:09,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:13:09,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:13:09,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688413184] [2021-12-22 10:13:09,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688413184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:13:09,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:13:09,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 10:13:09,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711471582] [2021-12-22 10:13:09,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:13:09,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 10:13:09,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:13:09,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 10:13:09,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 10:13:09,304 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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) [2021-12-22 10:13:14,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:13:14,073 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2021-12-22 10:13:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 10:13:14,074 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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 [2021-12-22 10:13:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:13:14,074 INFO L225 Difference]: With dead ends: 70 [2021-12-22 10:13:14,074 INFO L226 Difference]: Without dead ends: 57 [2021-12-22 10:13:14,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 10:13:14,076 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 55 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 10:13:14,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 526 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 8 Unchecked, 1.4s Time] [2021-12-22 10:13:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-22 10:13:14,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2021-12-22 10:13:14,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 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) [2021-12-22 10:13:14,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2021-12-22 10:13:14,080 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 23 [2021-12-22 10:13:14,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:13:14,080 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2021-12-22 10:13:14,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 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) [2021-12-22 10:13:14,080 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2021-12-22 10:13:14,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-22 10:13:14,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:13:14,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:13:14,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-22 10:13:14,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:13:14,287 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:13:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:13:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1017165070, now seen corresponding path program 1 times [2021-12-22 10:13:14,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:13:14,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597961191] [2021-12-22 10:13:14,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:13:14,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:13:14,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:13:14,290 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) [2021-12-22 10:13:14,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-22 10:13:14,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:13:14,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 10:13:14,651 INFO L286 TraceCheckSpWp]: Computing forward predicates...