./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_0684b.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 59d0560b101a1a446649456c356a26c615f3850e7b7d16baa2e50b6bf6dee850 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:41:10,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:41:10,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:41:10,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:41:10,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:41:10,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:41:10,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:41:10,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:41:10,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:41:10,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:41:10,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:41:10,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:41:10,260 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:41:10,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:41:10,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:41:10,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:41:10,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:41:10,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:41:10,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:41:10,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:41:10,274 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:41:10,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:41:10,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:41:10,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:41:10,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:41:10,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:41:10,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:41:10,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:41:10,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:41:10,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:41:10,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:41:10,290 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:41:10,291 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:41:10,292 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:41:10,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:41:10,294 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:41:10,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:41:10,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:41:10,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:41:10,295 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:41:10,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:41:10,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:41:10,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:41:10,330 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:41:10,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:41:10,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:41:10,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:41:10,332 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:41:10,332 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:41:10,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:41:10,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:41:10,333 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:41:10,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:41:10,334 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:41:10,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:41:10,334 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:41:10,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:41:10,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:41:10,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:41:10,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:41:10,335 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:41:10,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:41:10,335 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:41:10,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:41:10,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:41:10,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:41:10,336 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:41:10,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:41:10,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:41:10,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:41:10,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:41:10,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:41:10,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:41:10,337 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:41:10,338 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:41:10,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:41:10,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59d0560b101a1a446649456c356a26c615f3850e7b7d16baa2e50b6bf6dee850 [2022-07-21 01:41:10,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:41:10,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:41:10,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:41:10,604 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:41:10,605 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:41:10,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2022-07-21 01:41:10,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8febeb5bf/430194689ec84494b11930e03f70d3e4/FLAG2a0a84a91 [2022-07-21 01:41:10,998 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:41:10,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2022-07-21 01:41:11,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8febeb5bf/430194689ec84494b11930e03f70d3e4/FLAG2a0a84a91 [2022-07-21 01:41:11,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8febeb5bf/430194689ec84494b11930e03f70d3e4 [2022-07-21 01:41:11,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:41:11,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:41:11,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:41:11,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:41:11,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:41:11,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:41:11" (1/1) ... [2022-07-21 01:41:11,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ebdf2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11, skipping insertion in model container [2022-07-21 01:41:11,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:41:11" (1/1) ... [2022-07-21 01:41:11,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:41:11,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:41:11,688 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_0684b.c[6891,6904] [2022-07-21 01:41:11,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:41:11,699 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:41:11,747 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_0684b.c[6891,6904] [2022-07-21 01:41:11,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:41:11,772 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:41:11,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11 WrapperNode [2022-07-21 01:41:11,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:41:11,774 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:41:11,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:41:11,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:41:11,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11" (1/1) ... [2022-07-21 01:41:11,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11" (1/1) ... [2022-07-21 01:41:11,849 INFO L137 Inliner]: procedures = 21, calls = 98, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 313 [2022-07-21 01:41:11,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:41:11,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:41:11,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:41:11,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:41:11,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11" (1/1) ... [2022-07-21 01:41:11,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11" (1/1) ... [2022-07-21 01:41:11,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11" (1/1) ... [2022-07-21 01:41:11,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11" (1/1) ... [2022-07-21 01:41:11,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11" (1/1) ... [2022-07-21 01:41:11,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11" (1/1) ... [2022-07-21 01:41:11,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11" (1/1) ... [2022-07-21 01:41:11,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:41:11,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:41:11,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:41:11,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:41:11,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11" (1/1) ... [2022-07-21 01:41:11,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:41:11,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:41:11,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 01:41:11,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 01:41:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:41:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:41:11,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 01:41:11,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-21 01:41:11,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 01:41:11,973 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-07-21 01:41:11,974 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-07-21 01:41:11,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-07-21 01:41:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2022-07-21 01:41:11,975 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2022-07-21 01:41:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:41:11,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:41:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 01:41:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-07-21 01:41:11,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:41:12,076 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:41:12,077 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:41:12,409 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:41:12,436 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:41:12,436 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-21 01:41:12,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:41:12 BoogieIcfgContainer [2022-07-21 01:41:12,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:41:12,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:41:12,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:41:12,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:41:12,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:41:11" (1/3) ... [2022-07-21 01:41:12,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b5c74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:41:12, skipping insertion in model container [2022-07-21 01:41:12,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:11" (2/3) ... [2022-07-21 01:41:12,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b5c74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:41:12, skipping insertion in model container [2022-07-21 01:41:12,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:41:12" (3/3) ... [2022-07-21 01:41:12,445 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684b.c [2022-07-21 01:41:12,455 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:41:12,456 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:41:12,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:41:12,511 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2c89a4a6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@289b5468 [2022-07-21 01:41:12,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:41:12,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 108 states have (on average 1.7222222222222223) internal successors, (186), 109 states have internal predecessors, (186), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:41:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 01:41:12,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:41:12,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:41:12,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:41:12,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:41:12,527 INFO L85 PathProgramCache]: Analyzing trace with hash 334403016, now seen corresponding path program 1 times [2022-07-21 01:41:12,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:41:12,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759413880] [2022-07-21 01:41:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:41:12,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:41:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:41:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:41:12,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:41:12,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759413880] [2022-07-21 01:41:12,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759413880] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:41:12,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:41:12,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:41:12,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308380466] [2022-07-21 01:41:12,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:41:12,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:41:12,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:41:12,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:41:12,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:41:12,674 INFO L87 Difference]: Start difference. First operand has 116 states, 108 states have (on average 1.7222222222222223) internal successors, (186), 109 states have internal predecessors, (186), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:41:12,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:41:12,710 INFO L93 Difference]: Finished difference Result 230 states and 390 transitions. [2022-07-21 01:41:12,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:41:12,712 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2022-07-21 01:41:12,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:41:12,717 INFO L225 Difference]: With dead ends: 230 [2022-07-21 01:41:12,717 INFO L226 Difference]: Without dead ends: 112 [2022-07-21 01:41:12,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:41:12,724 INFO L413 NwaCegarLoop]: 167 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, 167 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:41:12,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:41:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-21 01:41:12,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-07-21 01:41:12,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 105 states have (on average 1.4666666666666666) internal successors, (154), 105 states have internal predecessors, (154), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:41:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 162 transitions. [2022-07-21 01:41:12,753 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 162 transitions. Word has length 15 [2022-07-21 01:41:12,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:41:12,753 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 162 transitions. [2022-07-21 01:41:12,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:41:12,754 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 162 transitions. [2022-07-21 01:41:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 01:41:12,754 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:41:12,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:41:12,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:41:12,755 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:41:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:41:12,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1239810759, now seen corresponding path program 1 times [2022-07-21 01:41:12,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:41:12,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013499417] [2022-07-21 01:41:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:41:12,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:41:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:41:12,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:41:12,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:41:12,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013499417] [2022-07-21 01:41:12,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013499417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:41:12,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:41:12,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 01:41:12,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876280085] [2022-07-21 01:41:12,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:41:12,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 01:41:12,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:41:12,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 01:41:12,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:41:12,883 INFO L87 Difference]: Start difference. First operand 112 states and 162 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:41:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:41:12,908 INFO L93 Difference]: Finished difference Result 213 states and 312 transitions. [2022-07-21 01:41:12,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 01:41:12,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-21 01:41:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:41:12,913 INFO L225 Difference]: With dead ends: 213 [2022-07-21 01:41:12,914 INFO L226 Difference]: Without dead ends: 112 [2022-07-21 01:41:12,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:41:12,915 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:41:12,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 318 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:41:12,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-21 01:41:12,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-07-21 01:41:12,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 105 states have (on average 1.457142857142857) internal successors, (153), 105 states have internal predecessors, (153), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:41:12,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 161 transitions. [2022-07-21 01:41:12,931 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 161 transitions. Word has length 18 [2022-07-21 01:41:12,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:41:12,932 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 161 transitions. [2022-07-21 01:41:12,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:41:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 161 transitions. [2022-07-21 01:41:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 01:41:12,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:41:12,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:41:12,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 01:41:12,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:41:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:41:12,938 INFO L85 PathProgramCache]: Analyzing trace with hash -386906492, now seen corresponding path program 1 times [2022-07-21 01:41:12,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:41:12,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487322494] [2022-07-21 01:41:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:41:12,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:41:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:41:13,413 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 01:41:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:41:13,782 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 01:41:13,783 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 01:41:13,783 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:41:13,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 01:41:13,786 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-21 01:41:13,789 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:41:13,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:41:13 BoogieIcfgContainer [2022-07-21 01:41:13,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:41:13,838 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:41:13,838 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:41:13,839 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:41:13,839 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:41:12" (3/4) ... [2022-07-21 01:41:13,841 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 01:41:13,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:41:13,842 INFO L158 Benchmark]: Toolchain (without parser) took 2425.12ms. Allocated memory was 56.6MB in the beginning and 100.7MB in the end (delta: 44.0MB). Free memory was 35.0MB in the beginning and 31.3MB in the end (delta: 3.7MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2022-07-21 01:41:13,842 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory is still 37.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:41:13,843 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.39ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 34.8MB in the end (delta: 10.9kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 01:41:13,845 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.30ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 29.6MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 01:41:13,846 INFO L158 Benchmark]: Boogie Preprocessor took 50.59ms. Allocated memory is still 56.6MB. Free memory was 29.6MB in the beginning and 25.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 01:41:13,847 INFO L158 Benchmark]: RCFGBuilder took 523.34ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 25.4MB in the beginning and 51.3MB in the end (delta: -25.8MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2022-07-21 01:41:13,848 INFO L158 Benchmark]: TraceAbstraction took 1397.51ms. Allocated memory was 73.4MB in the beginning and 100.7MB in the end (delta: 27.3MB). Free memory was 50.9MB in the beginning and 31.5MB in the end (delta: 19.3MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2022-07-21 01:41:13,848 INFO L158 Benchmark]: Witness Printer took 2.64ms. Allocated memory is still 100.7MB. Free memory was 31.5MB in the beginning and 31.3MB in the end (delta: 248.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:41:13,850 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 56.6MB. Free memory is still 37.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.39ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 34.8MB in the end (delta: 10.9kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.30ms. Allocated memory is still 56.6MB. Free memory was 34.8MB in the beginning and 29.6MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.59ms. Allocated memory is still 56.6MB. Free memory was 29.6MB in the beginning and 25.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 523.34ms. Allocated memory was 56.6MB in the beginning and 73.4MB in the end (delta: 16.8MB). Free memory was 25.4MB in the beginning and 51.3MB in the end (delta: -25.8MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1397.51ms. Allocated memory was 73.4MB in the beginning and 100.7MB in the end (delta: 27.3MB). Free memory was 50.9MB in the beginning and 31.5MB in the end (delta: 19.3MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. * Witness Printer took 2.64ms. Allocated memory is still 100.7MB. Free memory was 31.5MB in the beginning and 31.3MB in the end (delta: 248.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 288]: 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 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of bitwiseAnd at line 255, overapproximation of someBinaryDOUBLEComparisonOperation at line 287. 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] [L278] double x = __VERIFIER_nondet_double(); [L279] double y = -1.0 / 0.0; [L282] CALL, EXPR isfinite_double(x) [L262] __int32_t hx; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, 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, zero_atan2=0] [L264] ieee_double_shape_type gh_u; [L265] gh_u.value = (x) [L266] EXPR gh_u.parts.msw [L266] (hx) = gh_u.parts.msw [L268] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \result=1, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-2, 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, zero_atan2=0] [L282] RET, EXPR isfinite_double(x) [L282] isfinite_double(x) && isinf_double(y) [L282] CALL, EXPR isinf_double(y) [L248] __int32_t hx, lx; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L250] ieee_double_shape_type ew_u; [L251] ew_u.value = (x) [L252] EXPR ew_u.parts.msw [L252] (hx) = ew_u.parts.msw [L253] EXPR ew_u.parts.lsw [L253] (lx) = ew_u.parts.lsw [L255] hx &= 0x7fffffff [L256] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L257] hx = 0x7ff00000 - hx [L258] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, \result=1, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=6441402367, lx=0, 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=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L282] RET, EXPR isinf_double(y) [L282] isfinite_double(x) && isinf_double(y) VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isfinite_double(x)=1, isfinite_double(x) && isinf_double(y)=1, isinf_double(y)=1, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L282] COND TRUE isfinite_double(x) && isinf_double(y) [L284] 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)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, ix=0, lx=13, 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=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, hy=0, ix=0, iy=0, lx=13, ly=0, 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=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, hy=0, ix=0, iy=0, lx=13, ly=0, 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=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L284] RET, EXPR __ieee754_atan2(y, x) [L284] double res = __ieee754_atan2(y, x); [L287] COND TRUE res != -pi_o_2 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L288] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 485 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 156 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 329 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-21 01:41:13,886 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_0684b.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 59d0560b101a1a446649456c356a26c615f3850e7b7d16baa2e50b6bf6dee850 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:41:15,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:41:15,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:41:15,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:41:15,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:41:15,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:41:15,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:41:15,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:41:15,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:41:15,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:41:15,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:41:15,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:41:15,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:41:15,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:41:15,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:41:15,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:41:15,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:41:15,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:41:15,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:41:15,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:41:15,556 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:41:15,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:41:15,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:41:15,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:41:15,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:41:15,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:41:15,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:41:15,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:41:15,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:41:15,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:41:15,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:41:15,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:41:15,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:41:15,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:41:15,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:41:15,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:41:15,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:41:15,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:41:15,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:41:15,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:41:15,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:41:15,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:41:15,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 01:41:15,603 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:41:15,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:41:15,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:41:15,604 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:41:15,604 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:41:15,604 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:41:15,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:41:15,605 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:41:15,605 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:41:15,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:41:15,606 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:41:15,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:41:15,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:41:15,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:41:15,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:41:15,607 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:41:15,607 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 01:41:15,607 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 01:41:15,608 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 01:41:15,608 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:41:15,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:41:15,608 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:41:15,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:41:15,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:41:15,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:41:15,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:41:15,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:41:15,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:41:15,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:41:15,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:41:15,610 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 01:41:15,610 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 01:41:15,610 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:41:15,610 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:41:15,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:41:15,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 01:41:15,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59d0560b101a1a446649456c356a26c615f3850e7b7d16baa2e50b6bf6dee850 [2022-07-21 01:41:15,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:41:15,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:41:15,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:41:15,904 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:41:15,904 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:41:15,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2022-07-21 01:41:15,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290a169b9/1b036ccc90ee4ef09fd0a3d208f245aa/FLAG1fffdd885 [2022-07-21 01:41:16,308 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:41:16,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2022-07-21 01:41:16,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290a169b9/1b036ccc90ee4ef09fd0a3d208f245aa/FLAG1fffdd885 [2022-07-21 01:41:16,329 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290a169b9/1b036ccc90ee4ef09fd0a3d208f245aa [2022-07-21 01:41:16,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:41:16,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:41:16,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:41:16,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:41:16,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:41:16,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:41:16" (1/1) ... [2022-07-21 01:41:16,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d407d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16, skipping insertion in model container [2022-07-21 01:41:16,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:41:16" (1/1) ... [2022-07-21 01:41:16,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:41:16,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:41:16,584 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_0684b.c[6891,6904] [2022-07-21 01:41:16,587 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:41:16,602 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:41:16,662 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_0684b.c[6891,6904] [2022-07-21 01:41:16,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:41:16,685 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:41:16,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16 WrapperNode [2022-07-21 01:41:16,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:41:16,690 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:41:16,691 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:41:16,691 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:41:16,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16" (1/1) ... [2022-07-21 01:41:16,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16" (1/1) ... [2022-07-21 01:41:16,742 INFO L137 Inliner]: procedures = 24, calls = 98, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 276 [2022-07-21 01:41:16,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:41:16,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:41:16,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:41:16,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:41:16,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16" (1/1) ... [2022-07-21 01:41:16,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16" (1/1) ... [2022-07-21 01:41:16,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16" (1/1) ... [2022-07-21 01:41:16,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16" (1/1) ... [2022-07-21 01:41:16,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16" (1/1) ... [2022-07-21 01:41:16,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16" (1/1) ... [2022-07-21 01:41:16,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16" (1/1) ... [2022-07-21 01:41:16,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:41:16,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:41:16,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:41:16,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:41:16,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16" (1/1) ... [2022-07-21 01:41:16,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:41:16,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:41:16,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 01:41:16,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 01:41:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:41:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-07-21 01:41:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-07-21 01:41:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 01:41:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 01:41:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-07-21 01:41:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-07-21 01:41:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2022-07-21 01:41:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2022-07-21 01:41:16,875 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2022-07-21 01:41:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 01:41:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:41:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:41:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 01:41:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 01:41:16,987 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:41:16,988 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:41:38,946 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:41:38,951 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:41:38,952 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-21 01:41:38,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:41:38 BoogieIcfgContainer [2022-07-21 01:41:38,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:41:38,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:41:38,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:41:38,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:41:38,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:41:16" (1/3) ... [2022-07-21 01:41:38,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730e9b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:41:38, skipping insertion in model container [2022-07-21 01:41:38,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:41:16" (2/3) ... [2022-07-21 01:41:38,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730e9b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:41:38, skipping insertion in model container [2022-07-21 01:41:38,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:41:38" (3/3) ... [2022-07-21 01:41:38,958 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684b.c [2022-07-21 01:41:38,967 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:41:38,967 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:41:38,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:41:39,000 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@553577e8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@ab35e99 [2022-07-21 01:41:39,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:41:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 95 states have (on average 1.6526315789473685) internal successors, (157), 96 states have internal predecessors, (157), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:41:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 01:41:39,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:41:39,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:41:39,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:41:39,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:41:39,011 INFO L85 PathProgramCache]: Analyzing trace with hash -233161701, now seen corresponding path program 1 times [2022-07-21 01:41:39,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:41:39,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065327514] [2022-07-21 01:41:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:41:39,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:41:39,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:41:39,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:41:39,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 01:41:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:41:39,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 01:41:39,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:41:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:41:39,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:41:39,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:41:39,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065327514] [2022-07-21 01:41:39,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065327514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:41:39,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:41:39,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:41:39,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466871235] [2022-07-21 01:41:39,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:41:39,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:41:39,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:41:39,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:41:39,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:41:39,359 INFO L87 Difference]: Start difference. First operand has 103 states, 95 states have (on average 1.6526315789473685) internal successors, (157), 96 states have internal predecessors, (157), 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:41:39,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:41:39,378 INFO L93 Difference]: Finished difference Result 204 states and 332 transitions. [2022-07-21 01:41:39,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:41:39,380 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2022-07-21 01:41:39,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:41:39,384 INFO L225 Difference]: With dead ends: 204 [2022-07-21 01:41:39,384 INFO L226 Difference]: Without dead ends: 99 [2022-07-21 01:41:39,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:41:39,389 INFO L413 NwaCegarLoop]: 144 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, 144 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:41:39,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:41:39,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-21 01:41:39,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-07-21 01:41:39,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.423913043478261) internal successors, (131), 92 states have internal predecessors, (131), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:41:39,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 139 transitions. [2022-07-21 01:41:39,419 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 139 transitions. Word has length 15 [2022-07-21 01:41:39,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:41:39,419 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 139 transitions. [2022-07-21 01:41:39,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:41:39,420 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 139 transitions. [2022-07-21 01:41:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 01:41:39,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:41:39,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:41:39,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 01:41:39,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:41:39,624 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:41:39,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:41:39,625 INFO L85 PathProgramCache]: Analyzing trace with hash -114752879, now seen corresponding path program 1 times [2022-07-21 01:41:39,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:41:39,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689137842] [2022-07-21 01:41:39,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:41:39,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:41:39,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:41:39,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:41:39,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 01:41:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:41:39,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 01:41:39,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:41:40,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:41:40,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:41:40,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:41:40,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689137842] [2022-07-21 01:41:40,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689137842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:41:40,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:41:40,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 01:41:40,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944236135] [2022-07-21 01:41:40,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:41:40,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 01:41:40,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:41:40,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 01:41:40,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:41:40,149 INFO L87 Difference]: Start difference. First operand 99 states and 139 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:41:40,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:41:40,313 INFO L93 Difference]: Finished difference Result 187 states and 266 transitions. [2022-07-21 01:41:40,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 01:41:40,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-21 01:41:40,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:41:40,315 INFO L225 Difference]: With dead ends: 187 [2022-07-21 01:41:40,315 INFO L226 Difference]: Without dead ends: 99 [2022-07-21 01:41:40,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 01:41:40,317 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 0 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 01:41:40,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 01:41:40,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-21 01:41:40,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-07-21 01:41:40,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.4130434782608696) internal successors, (130), 92 states have internal predecessors, (130), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:41:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2022-07-21 01:41:40,324 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 18 [2022-07-21 01:41:40,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:41:40,324 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2022-07-21 01:41:40,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:41:40,324 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2022-07-21 01:41:40,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 01:41:40,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:41:40,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:41:40,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 01:41:40,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:41:40,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:41:40,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:41:40,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2086328612, now seen corresponding path program 1 times [2022-07-21 01:41:40,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:41:40,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064367668] [2022-07-21 01:41:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:41:40,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:41:40,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:41:40,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:41:40,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 01:41:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:41:41,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-21 01:41:41,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:41:46,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-21 01:41:50,383 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 01:41:50,383 INFO L390 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 [2022-07-21 01:41:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:41:53,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:41:53,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:41:53,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064367668] [2022-07-21 01:41:53,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064367668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:41:53,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:41:53,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 01:41:53,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583641695] [2022-07-21 01:41:53,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:41:53,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 01:41:53,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:41:53,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 01:41:53,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 01:41:53,950 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:41:53,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:41:53,978 INFO L93 Difference]: Finished difference Result 103 states and 141 transitions. [2022-07-21 01:41:53,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 01:41:53,978 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 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 22 [2022-07-21 01:41:53,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:41:53,983 INFO L225 Difference]: With dead ends: 103 [2022-07-21 01:41:53,983 INFO L226 Difference]: Without dead ends: 99 [2022-07-21 01:41:53,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-21 01:41:53,986 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 0 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:41:53,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1313 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 86 Unchecked, 0.0s Time] [2022-07-21 01:41:53,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-21 01:41:53,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-07-21 01:41:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.4021739130434783) internal successors, (129), 92 states have internal predecessors, (129), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:41:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 137 transitions. [2022-07-21 01:41:54,001 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 137 transitions. Word has length 22 [2022-07-21 01:41:54,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:41:54,002 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 137 transitions. [2022-07-21 01:41:54,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:41:54,002 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 137 transitions. [2022-07-21 01:41:54,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-21 01:41:54,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:41:54,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:41:54,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 01:41:54,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:41:54,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:41:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:41:54,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1752843547, now seen corresponding path program 1 times [2022-07-21 01:41:54,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:41:54,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420342193] [2022-07-21 01:41:54,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:41:54,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:41:54,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:41:54,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:41:54,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 01:41:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:41:54,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 01:41:54,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:41:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:41:56,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:41:56,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:41:56,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420342193] [2022-07-21 01:41:56,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420342193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:41:56,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:41:56,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 01:41:56,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799420371] [2022-07-21 01:41:56,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:41:56,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 01:41:56,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:41:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 01:41:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 01:41:56,980 INFO L87 Difference]: Start difference. First operand 99 states and 137 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:41:56,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:41:56,986 INFO L93 Difference]: Finished difference Result 173 states and 241 transitions. [2022-07-21 01:41:56,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 01:41:56,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 27 [2022-07-21 01:41:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:41:56,986 INFO L225 Difference]: With dead ends: 173 [2022-07-21 01:41:56,986 INFO L226 Difference]: Without dead ends: 97 [2022-07-21 01:41:56,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 01:41:56,988 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 5 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:41:56,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 584 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2022-07-21 01:41:56,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-07-21 01:41:56,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2022-07-21 01:41:57,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 86 states have (on average 1.372093023255814) internal successors, (118), 86 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:41:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 126 transitions. [2022-07-21 01:41:57,008 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 126 transitions. Word has length 27 [2022-07-21 01:41:57,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:41:57,008 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 126 transitions. [2022-07-21 01:41:57,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:41:57,008 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 126 transitions. [2022-07-21 01:41:57,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-21 01:41:57,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:41:57,009 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:41:57,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 01:41:57,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:41:57,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:41:57,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:41:57,210 INFO L85 PathProgramCache]: Analyzing trace with hash -144061543, now seen corresponding path program 1 times [2022-07-21 01:41:57,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:41:57,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165708362] [2022-07-21 01:41:57,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:41:57,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:41:57,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:41:57,212 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:41:57,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 01:41:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:41:57,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 01:41:57,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:42:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:42:04,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:42:04,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:42:04,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165708362] [2022-07-21 01:42:04,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165708362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:42:04,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:42:04,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:42:04,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001216349] [2022-07-21 01:42:04,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:42:04,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 01:42:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:42:04,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 01:42:04,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 01:42:04,432 INFO L87 Difference]: Start difference. First operand 93 states and 126 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:42:11,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:16,375 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:18,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:20,442 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:23,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:30,834 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:32,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:34,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:36,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:39,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:41,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:43,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:46,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:49,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:52,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:55,107 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:42:55,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:42:55,509 INFO L93 Difference]: Finished difference Result 101 states and 134 transitions. [2022-07-21 01:42:55,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 01:42:55,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-07-21 01:42:55,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:42:55,512 INFO L225 Difference]: With dead ends: 101 [2022-07-21 01:42:55,512 INFO L226 Difference]: Without dead ends: 96 [2022-07-21 01:42:55,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-21 01:42:55,513 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 96 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.6s IncrementalHoareTripleChecker+Time [2022-07-21 01:42:55,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 365 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 13 Unknown, 0 Unchecked, 46.6s Time] [2022-07-21 01:42:55,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-07-21 01:42:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2022-07-21 01:42:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 86 states have (on average 1.3604651162790697) internal successors, (117), 86 states have internal predecessors, (117), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:42:55,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 125 transitions. [2022-07-21 01:42:55,522 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 125 transitions. Word has length 27 [2022-07-21 01:42:55,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:42:55,522 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 125 transitions. [2022-07-21 01:42:55,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:42:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 125 transitions. [2022-07-21 01:42:55,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-21 01:42:55,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:42:55,523 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:42:55,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 01:42:55,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:42:55,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:42:55,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:42:55,724 INFO L85 PathProgramCache]: Analyzing trace with hash -142214501, now seen corresponding path program 1 times [2022-07-21 01:42:55,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:42:55,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057636795] [2022-07-21 01:42:55,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:42:55,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:42:55,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:42:55,726 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:42:55,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 01:42:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:42:56,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 01:42:56,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:42:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:42:58,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:42:58,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:42:58,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057636795] [2022-07-21 01:42:58,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057636795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:42:58,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:42:58,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:42:58,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637029503] [2022-07-21 01:42:58,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:42:58,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 01:42:58,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:42:58,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 01:42:58,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:42:58,582 INFO L87 Difference]: Start difference. First operand 93 states and 125 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:42:58,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:42:58,586 INFO L93 Difference]: Finished difference Result 101 states and 131 transitions. [2022-07-21 01:42:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 01:42:58,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2022-07-21 01:42:58,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:42:58,587 INFO L225 Difference]: With dead ends: 101 [2022-07-21 01:42:58,588 INFO L226 Difference]: Without dead ends: 95 [2022-07-21 01:42:58,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:42:58,588 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 50 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:42:58,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 396 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2022-07-21 01:42:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-21 01:42:58,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2022-07-21 01:42:58,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 84 states have internal predecessors, (114), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:42:58,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 122 transitions. [2022-07-21 01:42:58,599 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 122 transitions. Word has length 27 [2022-07-21 01:42:58,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:42:58,599 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 122 transitions. [2022-07-21 01:42:58,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:42:58,599 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 122 transitions. [2022-07-21 01:42:58,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 01:42:58,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:42:58,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:42:58,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 01:42:58,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:42:58,805 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:42:58,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:42:58,805 INFO L85 PathProgramCache]: Analyzing trace with hash -489049033, now seen corresponding path program 1 times [2022-07-21 01:42:58,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:42:58,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209052138] [2022-07-21 01:42:58,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:42:58,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:42:58,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:42:58,807 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:42:58,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 01:42:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:42:59,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 01:42:59,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:43:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:43:02,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:43:02,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:43:02,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209052138] [2022-07-21 01:43:02,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209052138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:43:02,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:43:02,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 01:43:02,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549061582] [2022-07-21 01:43:02,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:43:02,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 01:43:02,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:43:02,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 01:43:02,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 01:43:02,112 INFO L87 Difference]: Start difference. First operand 91 states and 122 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:43:02,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:43:02,118 INFO L93 Difference]: Finished difference Result 151 states and 201 transitions. [2022-07-21 01:43:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 01:43:02,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 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 28 [2022-07-21 01:43:02,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:43:02,119 INFO L225 Difference]: With dead ends: 151 [2022-07-21 01:43:02,119 INFO L226 Difference]: Without dead ends: 91 [2022-07-21 01:43:02,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 01:43:02,119 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 6 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:43:02,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 502 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2022-07-21 01:43:02,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-21 01:43:02,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2022-07-21 01:43:02,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.3164556962025316) internal successors, (104), 79 states have internal predecessors, (104), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:43:02,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2022-07-21 01:43:02,125 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 28 [2022-07-21 01:43:02,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:43:02,126 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2022-07-21 01:43:02,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:43:02,126 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2022-07-21 01:43:02,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 01:43:02,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:43:02,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:43:02,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 01:43:02,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:43:02,340 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:43:02,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:43:02,340 INFO L85 PathProgramCache]: Analyzing trace with hash -511928521, now seen corresponding path program 1 times [2022-07-21 01:43:02,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:43:02,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868417475] [2022-07-21 01:43:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:43:02,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:43:02,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:43:02,342 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:43:02,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 01:43:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:43:02,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 01:43:02,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:43:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:43:06,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:43:06,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:43:06,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868417475] [2022-07-21 01:43:06,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868417475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:43:06,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:43:06,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 01:43:06,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295692543] [2022-07-21 01:43:06,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:43:06,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 01:43:06,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:43:06,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 01:43:06,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 01:43:06,297 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:43:08,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:09,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:09,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:43:09,692 INFO L93 Difference]: Finished difference Result 107 states and 136 transitions. [2022-07-21 01:43:09,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 01:43:09,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 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 28 [2022-07-21 01:43:09,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:43:09,693 INFO L225 Difference]: With dead ends: 107 [2022-07-21 01:43:09,693 INFO L226 Difference]: Without dead ends: 103 [2022-07-21 01:43:09,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 01:43:09,694 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 19 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-21 01:43:09,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 607 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 19 Unchecked, 3.4s Time] [2022-07-21 01:43:09,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-07-21 01:43:09,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 86. [2022-07-21 01:43:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:43:09,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2022-07-21 01:43:09,699 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 111 transitions. Word has length 28 [2022-07-21 01:43:09,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:43:09,699 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 111 transitions. [2022-07-21 01:43:09,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:43:09,705 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 111 transitions. [2022-07-21 01:43:09,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-21 01:43:09,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:43:09,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:43:09,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 01:43:09,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:43:09,925 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:43:09,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:43:09,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1779988844, now seen corresponding path program 1 times [2022-07-21 01:43:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:43:09,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097701169] [2022-07-21 01:43:09,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:43:09,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:43:09,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:43:09,927 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:43:09,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 01:43:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:43:10,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 01:43:10,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:43:18,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:43:18,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:43:18,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:43:18,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097701169] [2022-07-21 01:43:18,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097701169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:43:18,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:43:18,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:43:18,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746276860] [2022-07-21 01:43:18,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:43:18,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 01:43:18,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:43:18,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 01:43:18,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 01:43:18,437 INFO L87 Difference]: Start difference. First operand 86 states and 111 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:43:26,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:27,959 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:29,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:32,349 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:38,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:42,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:44,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:47,145 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:49,157 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:51,165 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:53,406 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:55,415 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:43:58,705 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:44:01,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.86s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:44:04,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:44:07,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 01:44:07,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:44:07,639 INFO L93 Difference]: Finished difference Result 94 states and 119 transitions. [2022-07-21 01:44:07,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 01:44:07,640 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2022-07-21 01:44:07,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:44:07,641 INFO L225 Difference]: With dead ends: 94 [2022-07-21 01:44:07,641 INFO L226 Difference]: Without dead ends: 89 [2022-07-21 01:44:07,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-21 01:44:07,642 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 79 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.3s IncrementalHoareTripleChecker+Time [2022-07-21 01:44:07,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 328 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 14 Unknown, 0 Unchecked, 45.3s Time] [2022-07-21 01:44:07,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-21 01:44:07,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2022-07-21 01:44:07,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 79 states have internal predecessors, (102), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:44:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2022-07-21 01:44:07,646 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 29 [2022-07-21 01:44:07,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:44:07,646 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2022-07-21 01:44:07,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:44:07,646 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2022-07-21 01:44:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-21 01:44:07,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:44:07,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:44:07,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 01:44:07,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:44:07,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:44:07,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:44:07,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1781835886, now seen corresponding path program 1 times [2022-07-21 01:44:07,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:44:07,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272807208] [2022-07-21 01:44:07,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:44:07,856 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:44:07,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:44:07,857 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:44:07,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 01:44:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:44:08,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 01:44:08,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:44:10,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:44:10,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:44:10,992 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:44:10,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272807208] [2022-07-21 01:44:10,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272807208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:44:10,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:44:10,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 01:44:10,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322618855] [2022-07-21 01:44:10,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:44:10,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 01:44:10,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:44:10,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 01:44:10,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:44:10,993 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:44:10,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:44:10,997 INFO L93 Difference]: Finished difference Result 90 states and 113 transitions. [2022-07-21 01:44:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 01:44:10,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2022-07-21 01:44:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:44:10,997 INFO L225 Difference]: With dead ends: 90 [2022-07-21 01:44:10,998 INFO L226 Difference]: Without dead ends: 84 [2022-07-21 01:44:10,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 01:44:10,998 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 36 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:44:10,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 353 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 7 Unchecked, 0.0s Time] [2022-07-21 01:44:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-07-21 01:44:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-07-21 01:44:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 77 states have internal predecessors, (99), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:44:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2022-07-21 01:44:11,003 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 29 [2022-07-21 01:44:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:44:11,003 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2022-07-21 01:44:11,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:44:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2022-07-21 01:44:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-21 01:44:11,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:44:11,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:44:11,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 01:44:11,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:44:11,219 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:44:11,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:44:11,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1308443982, now seen corresponding path program 1 times [2022-07-21 01:44:11,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:44:11,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979464328] [2022-07-21 01:44:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:44:11,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:44:11,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:44:11,225 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:44:11,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 01:44:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:44:11,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-21 01:44:11,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:44:18,019 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_81| (_ BitVec 64)) (|v_skolemized_q#valueAsBitvector_82| (_ BitVec 64))) (and (not (= (bvlshr (bvadd (_ bv2148532224 32) (bvand (_ bv2147483647 32) ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_81|))) (_ bv31 32)) (_ bv0 32))) (= |c_ULTIMATE.start___ieee754_atan2_~hx~1#1| ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_82|)) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_81|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_81|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_81|)) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_82|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_82|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_82|))))) is different from true [2022-07-21 01:44:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:44:30,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:44:30,723 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:44:30,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979464328] [2022-07-21 01:44:30,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979464328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:44:30,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:44:30,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 01:44:30,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90472071] [2022-07-21 01:44:30,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:44:30,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 01:44:30,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:44:30,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 01:44:30,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=4, NotChecked=14, Total=90 [2022-07-21 01:44:30,725 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:44:32,735 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 01:44:32,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:44:32,740 INFO L93 Difference]: Finished difference Result 141 states and 180 transitions. [2022-07-21 01:44:32,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 01:44:32,742 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 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 29 [2022-07-21 01:44:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:44:32,742 INFO L225 Difference]: With dead ends: 141 [2022-07-21 01:44:32,742 INFO L226 Difference]: Without dead ends: 82 [2022-07-21 01:44:32,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=4, NotChecked=14, Total=90 [2022-07-21 01:44:32,743 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 5 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:44:32,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 684 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 117 Unchecked, 2.0s Time] [2022-07-21 01:44:32,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-07-21 01:44:32,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2022-07-21 01:44:32,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 71 states have internal predecessors, (89), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-21 01:44:32,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 97 transitions. [2022-07-21 01:44:32,747 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 97 transitions. Word has length 29 [2022-07-21 01:44:32,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:44:32,747 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 97 transitions. [2022-07-21 01:44:32,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:44:32,748 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 97 transitions. [2022-07-21 01:44:32,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-21 01:44:32,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:44:32,748 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:44:32,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-07-21 01:44:32,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:44:32,964 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:44:32,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:44:32,964 INFO L85 PathProgramCache]: Analyzing trace with hash -985303072, now seen corresponding path program 1 times [2022-07-21 01:44:32,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:44:32,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239839407] [2022-07-21 01:44:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:44:32,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:44:32,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:44:32,966 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:44:32,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 01:44:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:44:33,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 01:44:33,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:44:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:44:36,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:44:36,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:44:36,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239839407] [2022-07-21 01:44:36,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239839407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:44:36,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:44:36,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 01:44:36,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126521554] [2022-07-21 01:44:36,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:44:36,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 01:44:36,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:44:36,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 01:44:36,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 01:44:36,417 INFO L87 Difference]: Start difference. First operand 78 states and 97 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:44:36,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:44:36,420 INFO L93 Difference]: Finished difference Result 114 states and 142 transitions. [2022-07-21 01:44:36,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 01:44:36,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 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 30 [2022-07-21 01:44:36,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:44:36,421 INFO L225 Difference]: With dead ends: 114 [2022-07-21 01:44:36,421 INFO L226 Difference]: Without dead ends: 58 [2022-07-21 01:44:36,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 01:44:36,422 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 5 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:44:36,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 306 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 8 Unchecked, 0.0s Time] [2022-07-21 01:44:36,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-07-21 01:44:36,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-07-21 01:44:36,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 53 states have internal predecessors, (64), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:44:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2022-07-21 01:44:36,441 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 30 [2022-07-21 01:44:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:44:36,441 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2022-07-21 01:44:36,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 01:44:36,442 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2022-07-21 01:44:36,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 01:44:36,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:44:36,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:44:36,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-21 01:44:36,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:44:36,652 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:44:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:44:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1918665192, now seen corresponding path program 1 times [2022-07-21 01:44:36,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:44:36,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547968480] [2022-07-21 01:44:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:44:36,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:44:36,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:44:36,654 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:44:36,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 01:44:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:44:37,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 01:44:37,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:44:39,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2022-07-21 01:44:46,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-07-21 01:44:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:44:50,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:44:50,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:44:50,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547968480] [2022-07-21 01:44:50,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547968480] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:44:50,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:44:50,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 01:44:50,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430745906] [2022-07-21 01:44:50,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:44:50,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 01:44:50,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:44:50,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 01:44:50,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 01:44:50,386 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:44:52,407 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 01:44:52,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:44:52,409 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2022-07-21 01:44:52,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 01:44:52,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-07-21 01:44:52,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:44:52,411 INFO L225 Difference]: With dead ends: 65 [2022-07-21 01:44:52,411 INFO L226 Difference]: Without dead ends: 58 [2022-07-21 01:44:52,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 01:44:52,411 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 5 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:44:52,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 313 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 53 Unchecked, 2.0s Time] [2022-07-21 01:44:52,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-07-21 01:44:52,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-07-21 01:44:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:44:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2022-07-21 01:44:52,418 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 35 [2022-07-21 01:44:52,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:44:52,418 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2022-07-21 01:44:52,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:44:52,419 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2022-07-21 01:44:52,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 01:44:52,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:44:52,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:44:52,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-07-21 01:44:52,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:44:52,620 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:44:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:44:52,620 INFO L85 PathProgramCache]: Analyzing trace with hash -521190685, now seen corresponding path program 1 times [2022-07-21 01:44:52,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:44:52,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114316427] [2022-07-21 01:44:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:44:52,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:44:52,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:44:52,622 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:44:52,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 01:44:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:44:52,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 01:44:52,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:44:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:44:57,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:44:57,782 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:44:57,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114316427] [2022-07-21 01:44:57,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114316427] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:44:57,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:44:57,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 01:44:57,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863990613] [2022-07-21 01:44:57,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:44:57,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 01:44:57,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:44:57,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 01:44:57,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-21 01:44:57,784 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:44:59,118 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 01:44:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:44:59,563 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-07-21 01:44:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 01:44:59,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-07-21 01:44:59,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:44:59,565 INFO L225 Difference]: With dead ends: 65 [2022-07-21 01:44:59,565 INFO L226 Difference]: Without dead ends: 37 [2022-07-21 01:44:59,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 01:44:59,566 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 23 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 01:44:59,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 336 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 48 Unchecked, 1.4s Time] [2022-07-21 01:44:59,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-21 01:44:59,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-07-21 01:44:59,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:44:59,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2022-07-21 01:44:59,569 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 35 [2022-07-21 01:44:59,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:44:59,569 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2022-07-21 01:44:59,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:44:59,569 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2022-07-21 01:44:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-21 01:44:59,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:44:59,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:44:59,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-07-21 01:44:59,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:44:59,770 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:44:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:44:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash 670836306, now seen corresponding path program 1 times [2022-07-21 01:44:59,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:44:59,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808919403] [2022-07-21 01:44:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:44:59,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:44:59,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:44:59,772 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:44:59,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 01:45:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:45:00,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 01:45:00,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:45:04,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:45:04,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:45:04,326 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:45:04,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808919403] [2022-07-21 01:45:04,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808919403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:45:04,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:45:04,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 01:45:04,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853129382] [2022-07-21 01:45:04,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:45:04,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 01:45:04,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:45:04,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 01:45:04,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 01:45:04,327 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:45:06,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 01:45:06,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:45:06,341 INFO L93 Difference]: Finished difference Result 44 states and 43 transitions. [2022-07-21 01:45:06,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 01:45:06,343 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-07-21 01:45:06,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:45:06,343 INFO L225 Difference]: With dead ends: 44 [2022-07-21 01:45:06,343 INFO L226 Difference]: Without dead ends: 37 [2022-07-21 01:45:06,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 01:45:06,344 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 01:45:06,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 145 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 14 Unchecked, 2.0s Time] [2022-07-21 01:45:06,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-21 01:45:06,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-07-21 01:45:06,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.0) internal successors, (34), 34 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:45:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 36 transitions. [2022-07-21 01:45:06,346 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 36 transitions. Word has length 36 [2022-07-21 01:45:06,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:45:06,346 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 36 transitions. [2022-07-21 01:45:06,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 01:45:06,346 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2022-07-21 01:45:06,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-21 01:45:06,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:45:06,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:45:06,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-21 01:45:06,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:45:06,556 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:45:06,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:45:06,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1558339987, now seen corresponding path program 1 times [2022-07-21 01:45:06,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:45:06,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841625904] [2022-07-21 01:45:06,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:45:06,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:45:06,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:45:06,558 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 01:45:06,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 01:45:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:45:07,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-21 01:45:07,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:45:10,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:45:10,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:45:10,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2022-07-21 01:45:11,368 INFO L356 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2022-07-21 01:45:11,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 39 [2022-07-21 01:45:15,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:45:15,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:45:15,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2022-07-21 01:45:16,330 INFO L356 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2022-07-21 01:45:16,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 39 [2022-07-21 01:45:20,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:45:20,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:45:20,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2022-07-21 01:45:21,703 INFO L356 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2022-07-21 01:45:21,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 39 [2022-07-21 01:45:23,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:45:24,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:45:24,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 40 [2022-07-21 01:45:25,298 INFO L356 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2022-07-21 01:45:25,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 39 [2022-07-21 01:45:29,405 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-21 01:45:29,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 13 [2022-07-21 01:45:44,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:45:44,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:45:44,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:45:44,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 01:45:44,850 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-07-21 01:45:44,850 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 134 treesize of output 44 [2022-07-21 01:45:54,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 01:45:54,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:45:54,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:45:54,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841625904] [2022-07-21 01:45:54,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841625904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:45:54,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:45:54,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 01:45:54,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45154883] [2022-07-21 01:45:54,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:45:54,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 01:45:54,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:45:54,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 01:45:54,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=64, Unknown=8, NotChecked=0, Total=90 [2022-07-21 01:45:54,089 INFO L87 Difference]: Start difference. First operand 37 states and 36 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)