./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.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/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.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 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:19:22,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:19:22,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:19:22,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:19:22,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:19:22,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:19:22,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:19:22,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:19:22,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:19:22,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:19:22,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:19:22,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:19:22,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:19:22,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:19:22,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:19:22,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:19:22,226 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:19:22,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:19:22,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:19:22,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:19:22,235 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:19:22,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:19:22,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:19:22,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:19:22,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:19:22,251 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:19:22,251 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:19:22,251 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:19:22,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:19:22,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:19:22,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:19:22,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:19:22,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:19:22,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:19:22,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:19:22,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:19:22,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:19:22,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:19:22,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:19:22,257 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:19:22,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:19:22,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:19:22,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:19:22,291 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:19:22,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:19:22,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:19:22,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:19:22,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:19:22,293 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:19:22,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:19:22,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:19:22,293 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:19:22,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:19:22,294 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:19:22,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:19:22,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:19:22,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:19:22,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:19:22,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:19:22,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:19:22,296 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:19:22,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:19:22,296 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:19:22,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:19:22,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:19:22,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:19:22,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:19:22,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:19:22,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:19:22,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:19:22,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:19:22,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:19:22,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:19:22,298 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:19:22,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:19:22,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:19:22,298 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f4008cf19548475d4a1b90b2fc9651e21c073e156065e130bea6b81023185c5 [2022-07-21 05:19:22,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:19:22,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:19:22,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:19:22,604 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:19:22,604 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:19:22,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2022-07-21 05:19:22,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b075929/9062e482fe964196bb6ed80aba6443e8/FLAG33ab4de2d [2022-07-21 05:19:23,013 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:19:23,014 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2022-07-21 05:19:23,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b075929/9062e482fe964196bb6ed80aba6443e8/FLAG33ab4de2d [2022-07-21 05:19:23,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b075929/9062e482fe964196bb6ed80aba6443e8 [2022-07-21 05:19:23,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:19:23,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:19:23,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:19:23,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:19:23,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:19:23,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:19:23" (1/1) ... [2022-07-21 05:19:23,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@203a3fb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23, skipping insertion in model container [2022-07-21 05:19:23,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:19:23" (1/1) ... [2022-07-21 05:19:23,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:19:23,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:19:23,581 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/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2022-07-21 05:19:23,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:19:23,596 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:19:23,658 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/seq-mthreaded/pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c[12020,12033] [2022-07-21 05:19:23,659 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:19:23,670 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:19:23,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23 WrapperNode [2022-07-21 05:19:23,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:19:23,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:19:23,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:19:23,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:19:23,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23" (1/1) ... [2022-07-21 05:19:23,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23" (1/1) ... [2022-07-21 05:19:23,712 INFO L137 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 405 [2022-07-21 05:19:23,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:19:23,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:19:23,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:19:23,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:19:23,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23" (1/1) ... [2022-07-21 05:19:23,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23" (1/1) ... [2022-07-21 05:19:23,730 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23" (1/1) ... [2022-07-21 05:19:23,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23" (1/1) ... [2022-07-21 05:19:23,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23" (1/1) ... [2022-07-21 05:19:23,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23" (1/1) ... [2022-07-21 05:19:23,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23" (1/1) ... [2022-07-21 05:19:23,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:19:23,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:19:23,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:19:23,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:19:23,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23" (1/1) ... [2022-07-21 05:19:23,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:19:23,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:23,812 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 05:19:23,814 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 05:19:23,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:19:23,836 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2022-07-21 05:19:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2022-07-21 05:19:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-07-21 05:19:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-07-21 05:19:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2022-07-21 05:19:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2022-07-21 05:19:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2022-07-21 05:19:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2022-07-21 05:19:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2022-07-21 05:19:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2022-07-21 05:19:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 05:19:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 05:19:23,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:19:23,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:19:23,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:19:23,920 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:19:23,922 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:19:24,330 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:19:24,336 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:19:24,336 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 05:19:24,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:19:24 BoogieIcfgContainer [2022-07-21 05:19:24,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:19:24,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:19:24,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:19:24,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:19:24,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:19:23" (1/3) ... [2022-07-21 05:19:24,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227866ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:19:24, skipping insertion in model container [2022-07-21 05:19:24,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:19:23" (2/3) ... [2022-07-21 05:19:24,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227866ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:19:24, skipping insertion in model container [2022-07-21 05:19:24,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:19:24" (3/3) ... [2022-07-21 05:19:24,373 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.1.ufo.UNBOUNDED.pals.c [2022-07-21 05:19:24,385 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:19:24,385 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:19:24,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:19:24,447 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@3d4b0271, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4801a2ce [2022-07-21 05:19:24,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:19:24,459 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 142 states have (on average 1.591549295774648) internal successors, (226), 147 states have internal predecessors, (226), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-21 05:19:24,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 05:19:24,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:24,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:24,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:24,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:24,473 INFO L85 PathProgramCache]: Analyzing trace with hash -2110673050, now seen corresponding path program 1 times [2022-07-21 05:19:24,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:24,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445956987] [2022-07-21 05:19:24,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:24,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,646 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 05:19:24,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:24,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445956987] [2022-07-21 05:19:24,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445956987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:24,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:24,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:24,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679067588] [2022-07-21 05:19:24,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:24,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:24,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:24,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:24,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:24,686 INFO L87 Difference]: Start difference. First operand has 187 states, 142 states have (on average 1.591549295774648) internal successors, (226), 147 states have internal predecessors, (226), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:19:24,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:24,787 INFO L93 Difference]: Finished difference Result 375 states and 645 transitions. [2022-07-21 05:19:24,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:24,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 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 05:19:24,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:24,799 INFO L225 Difference]: With dead ends: 375 [2022-07-21 05:19:24,800 INFO L226 Difference]: Without dead ends: 191 [2022-07-21 05:19:24,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:24,811 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 18 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:24,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 835 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:24,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-21 05:19:24,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2022-07-21 05:19:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 144 states have (on average 1.5416666666666667) internal successors, (222), 148 states have internal predecessors, (222), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-07-21 05:19:24,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 296 transitions. [2022-07-21 05:19:24,873 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 296 transitions. Word has length 15 [2022-07-21 05:19:24,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:24,873 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 296 transitions. [2022-07-21 05:19:24,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:19:24,873 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 296 transitions. [2022-07-21 05:19:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 05:19:24,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:24,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:24,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:19:24,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:24,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1922034334, now seen corresponding path program 1 times [2022-07-21 05:19:24,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:24,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614551997] [2022-07-21 05:19:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:24,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:24,912 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 05:19:24,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:24,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614551997] [2022-07-21 05:19:24,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614551997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:24,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:24,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:24,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728677142] [2022-07-21 05:19:24,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:24,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:24,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:24,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:24,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:24,915 INFO L87 Difference]: Start difference. First operand 189 states and 296 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:19:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:24,972 INFO L93 Difference]: Finished difference Result 391 states and 615 transitions. [2022-07-21 05:19:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:24,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-21 05:19:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:24,975 INFO L225 Difference]: With dead ends: 391 [2022-07-21 05:19:24,976 INFO L226 Difference]: Without dead ends: 205 [2022-07-21 05:19:24,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:24,981 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 25 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:24,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 856 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:24,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-21 05:19:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2022-07-21 05:19:25,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 155 states have (on average 1.5225806451612902) internal successors, (236), 159 states have internal predecessors, (236), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-21 05:19:25,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 312 transitions. [2022-07-21 05:19:25,002 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 312 transitions. Word has length 16 [2022-07-21 05:19:25,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:25,002 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 312 transitions. [2022-07-21 05:19:25,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:19:25,003 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 312 transitions. [2022-07-21 05:19:25,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 05:19:25,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:25,004 INFO L195 NwaCegarLoop]: trace histogram [2, 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 05:19:25,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:19:25,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:25,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:25,005 INFO L85 PathProgramCache]: Analyzing trace with hash -784914242, now seen corresponding path program 1 times [2022-07-21 05:19:25,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:25,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835980062] [2022-07-21 05:19:25,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:19:25,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:25,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835980062] [2022-07-21 05:19:25,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835980062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:25,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:25,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:19:25,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48265540] [2022-07-21 05:19:25,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:25,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:19:25,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:25,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:19:25,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:25,049 INFO L87 Difference]: Start difference. First operand 202 states and 312 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:25,081 INFO L93 Difference]: Finished difference Result 423 states and 661 transitions. [2022-07-21 05:19:25,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:19:25,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-07-21 05:19:25,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:25,086 INFO L225 Difference]: With dead ends: 423 [2022-07-21 05:19:25,087 INFO L226 Difference]: Without dead ends: 231 [2022-07-21 05:19:25,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:19:25,091 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 22 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 581 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 05:19:25,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 581 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:25,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-07-21 05:19:25,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 204. [2022-07-21 05:19:25,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 157 states have (on average 1.515923566878981) internal successors, (238), 161 states have internal predecessors, (238), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-21 05:19:25,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 314 transitions. [2022-07-21 05:19:25,103 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 314 transitions. Word has length 24 [2022-07-21 05:19:25,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:25,103 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 314 transitions. [2022-07-21 05:19:25,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 05:19:25,104 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 314 transitions. [2022-07-21 05:19:25,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 05:19:25,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:25,105 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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 05:19:25,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:19:25,105 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:25,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1820136659, now seen corresponding path program 1 times [2022-07-21 05:19:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:25,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993060366] [2022-07-21 05:19:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:25,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:19:25,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:25,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993060366] [2022-07-21 05:19:25,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993060366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:25,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:25,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:25,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619703271] [2022-07-21 05:19:25,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:25,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:25,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:25,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:25,176 INFO L87 Difference]: Start difference. First operand 204 states and 314 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 05:19:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:25,217 INFO L93 Difference]: Finished difference Result 506 states and 798 transitions. [2022-07-21 05:19:25,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-21 05:19:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:25,219 INFO L225 Difference]: With dead ends: 506 [2022-07-21 05:19:25,220 INFO L226 Difference]: Without dead ends: 318 [2022-07-21 05:19:25,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:25,225 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 130 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:25,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1218 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-07-21 05:19:25,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 208. [2022-07-21 05:19:25,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 160 states have (on average 1.50625) internal successors, (241), 164 states have internal predecessors, (241), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2022-07-21 05:19:25,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 318 transitions. [2022-07-21 05:19:25,248 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 318 transitions. Word has length 32 [2022-07-21 05:19:25,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:25,249 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 318 transitions. [2022-07-21 05:19:25,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 05:19:25,249 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 318 transitions. [2022-07-21 05:19:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 05:19:25,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:25,255 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 05:19:25,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:19:25,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:25,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:25,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1536399393, now seen corresponding path program 1 times [2022-07-21 05:19:25,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:25,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543664567] [2022-07-21 05:19:25,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:25,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 05:19:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,331 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 05:19:25,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:25,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543664567] [2022-07-21 05:19:25,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543664567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:25,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:25,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:19:25,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880906558] [2022-07-21 05:19:25,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:25,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:19:25,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:25,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:19:25,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:19:25,333 INFO L87 Difference]: Start difference. First operand 208 states and 318 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 05:19:25,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:25,386 INFO L93 Difference]: Finished difference Result 361 states and 558 transitions. [2022-07-21 05:19:25,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:19:25,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-07-21 05:19:25,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:25,390 INFO L225 Difference]: With dead ends: 361 [2022-07-21 05:19:25,390 INFO L226 Difference]: Without dead ends: 204 [2022-07-21 05:19:25,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:25,392 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 130 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:25,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1238 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:25,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-07-21 05:19:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-07-21 05:19:25,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 157 states have (on average 1.484076433121019) internal successors, (233), 161 states have internal predecessors, (233), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-07-21 05:19:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 309 transitions. [2022-07-21 05:19:25,400 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 309 transitions. Word has length 35 [2022-07-21 05:19:25,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:25,400 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 309 transitions. [2022-07-21 05:19:25,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-21 05:19:25,400 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 309 transitions. [2022-07-21 05:19:25,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-21 05:19:25,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:25,403 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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 05:19:25,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:19:25,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2059225234, now seen corresponding path program 1 times [2022-07-21 05:19:25,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:25,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387067881] [2022-07-21 05:19:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:25,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:19:25,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:25,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387067881] [2022-07-21 05:19:25,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387067881] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:25,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042329461] [2022-07-21 05:19:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:25,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:25,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:25,446 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:25,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 05:19:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 05:19:25,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:19:25,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:19:25,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042329461] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:25,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:25,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-07-21 05:19:25,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121548256] [2022-07-21 05:19:25,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:25,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:25,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:25,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:25,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:25,623 INFO L87 Difference]: Start difference. First operand 204 states and 309 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:25,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:25,655 INFO L93 Difference]: Finished difference Result 456 states and 705 transitions. [2022-07-21 05:19:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:25,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2022-07-21 05:19:25,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:25,657 INFO L225 Difference]: With dead ends: 456 [2022-07-21 05:19:25,657 INFO L226 Difference]: Without dead ends: 263 [2022-07-21 05:19:25,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:25,658 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 98 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:25,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 595 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-21 05:19:25,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 257. [2022-07-21 05:19:25,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 200 states have (on average 1.46) internal successors, (292), 204 states have internal predecessors, (292), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-21 05:19:25,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 388 transitions. [2022-07-21 05:19:25,668 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 388 transitions. Word has length 35 [2022-07-21 05:19:25,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:25,668 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 388 transitions. [2022-07-21 05:19:25,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-21 05:19:25,669 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 388 transitions. [2022-07-21 05:19:25,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-21 05:19:25,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:25,669 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:25,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:25,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-21 05:19:25,883 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash 253396334, now seen corresponding path program 2 times [2022-07-21 05:19:25,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:25,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649476656] [2022-07-21 05:19:25,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:25,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-21 05:19:25,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:25,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649476656] [2022-07-21 05:19:25,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649476656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:25,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:25,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:25,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144379940] [2022-07-21 05:19:25,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:25,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:25,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:25,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:25,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:25,945 INFO L87 Difference]: Start difference. First operand 257 states and 388 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 05:19:25,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:25,989 INFO L93 Difference]: Finished difference Result 494 states and 766 transitions. [2022-07-21 05:19:25,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:25,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-07-21 05:19:25,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:25,993 INFO L225 Difference]: With dead ends: 494 [2022-07-21 05:19:25,993 INFO L226 Difference]: Without dead ends: 266 [2022-07-21 05:19:25,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:25,996 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 19 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:25,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 834 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:25,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-07-21 05:19:26,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2022-07-21 05:19:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 206 states have (on average 1.4563106796116505) internal successors, (300), 210 states have internal predecessors, (300), 48 states have call successors, (48), 9 states have call predecessors, (48), 9 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-21 05:19:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 396 transitions. [2022-07-21 05:19:26,016 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 396 transitions. Word has length 57 [2022-07-21 05:19:26,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:26,016 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 396 transitions. [2022-07-21 05:19:26,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 05:19:26,018 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 396 transitions. [2022-07-21 05:19:26,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-21 05:19:26,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:26,023 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:26,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:19:26,024 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:26,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:26,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1207102941, now seen corresponding path program 1 times [2022-07-21 05:19:26,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:26,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343248370] [2022-07-21 05:19:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:26,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:26,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-21 05:19:26,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:26,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343248370] [2022-07-21 05:19:26,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343248370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:26,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:26,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144522077] [2022-07-21 05:19:26,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:26,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:26,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:26,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:26,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:26,077 INFO L87 Difference]: Start difference. First operand 264 states and 396 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 05:19:26,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:26,108 INFO L93 Difference]: Finished difference Result 538 states and 818 transitions. [2022-07-21 05:19:26,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:26,109 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-07-21 05:19:26,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:26,113 INFO L225 Difference]: With dead ends: 538 [2022-07-21 05:19:26,113 INFO L226 Difference]: Without dead ends: 303 [2022-07-21 05:19:26,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:26,115 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 24 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:26,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 848 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:26,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-07-21 05:19:26,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 300. [2022-07-21 05:19:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 238 states have (on average 1.415966386554622) internal successors, (337), 242 states have internal predecessors, (337), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-21 05:19:26,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 439 transitions. [2022-07-21 05:19:26,129 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 439 transitions. Word has length 57 [2022-07-21 05:19:26,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:26,138 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 439 transitions. [2022-07-21 05:19:26,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 05:19:26,138 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 439 transitions. [2022-07-21 05:19:26,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 05:19:26,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:26,139 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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 05:19:26,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:19:26,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:26,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:26,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1632698932, now seen corresponding path program 1 times [2022-07-21 05:19:26,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:26,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375341042] [2022-07-21 05:19:26,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:26,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-21 05:19:26,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:26,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375341042] [2022-07-21 05:19:26,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375341042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:26,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:26,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:26,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136683064] [2022-07-21 05:19:26,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:26,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:26,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:26,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:26,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:26,240 INFO L87 Difference]: Start difference. First operand 300 states and 439 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 05:19:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:26,258 INFO L93 Difference]: Finished difference Result 549 states and 817 transitions. [2022-07-21 05:19:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:26,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2022-07-21 05:19:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:26,263 INFO L225 Difference]: With dead ends: 549 [2022-07-21 05:19:26,263 INFO L226 Difference]: Without dead ends: 302 [2022-07-21 05:19:26,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:26,265 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 0 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:26,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1128 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:26,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-07-21 05:19:26,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2022-07-21 05:19:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 238 states have (on average 1.403361344537815) internal successors, (334), 242 states have internal predecessors, (334), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-21 05:19:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 436 transitions. [2022-07-21 05:19:26,282 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 436 transitions. Word has length 75 [2022-07-21 05:19:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:26,282 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 436 transitions. [2022-07-21 05:19:26,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 05:19:26,283 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 436 transitions. [2022-07-21 05:19:26,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-21 05:19:26,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:26,283 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:26,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:19:26,284 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:26,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:26,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1594312955, now seen corresponding path program 1 times [2022-07-21 05:19:26,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:26,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497333209] [2022-07-21 05:19:26,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:26,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:26,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-21 05:19:26,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:26,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497333209] [2022-07-21 05:19:26,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497333209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:26,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:26,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:26,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663957680] [2022-07-21 05:19:26,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:26,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:26,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:26,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:26,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:26,373 INFO L87 Difference]: Start difference. First operand 300 states and 436 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 05:19:26,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:26,404 INFO L93 Difference]: Finished difference Result 586 states and 873 transitions. [2022-07-21 05:19:26,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:26,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2022-07-21 05:19:26,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:26,407 INFO L225 Difference]: With dead ends: 586 [2022-07-21 05:19:26,407 INFO L226 Difference]: Without dead ends: 344 [2022-07-21 05:19:26,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:26,409 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 25 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:26,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 848 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:26,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-07-21 05:19:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 341. [2022-07-21 05:19:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 275 states have (on average 1.3672727272727272) internal successors, (376), 279 states have internal predecessors, (376), 54 states have call successors, (54), 11 states have call predecessors, (54), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-07-21 05:19:26,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 484 transitions. [2022-07-21 05:19:26,421 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 484 transitions. Word has length 104 [2022-07-21 05:19:26,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:26,421 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 484 transitions. [2022-07-21 05:19:26,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 05:19:26,422 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 484 transitions. [2022-07-21 05:19:26,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-21 05:19:26,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:26,424 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:26,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 05:19:26,424 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:26,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:26,424 INFO L85 PathProgramCache]: Analyzing trace with hash 611529803, now seen corresponding path program 1 times [2022-07-21 05:19:26,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:26,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267354917] [2022-07-21 05:19:26,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:26,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-21 05:19:26,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:26,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267354917] [2022-07-21 05:19:26,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267354917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:26,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:26,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:26,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942544796] [2022-07-21 05:19:26,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:26,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:26,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:26,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:26,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:26,498 INFO L87 Difference]: Start difference. First operand 341 states and 484 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 05:19:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:26,534 INFO L93 Difference]: Finished difference Result 612 states and 893 transitions. [2022-07-21 05:19:26,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:26,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2022-07-21 05:19:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:26,536 INFO L225 Difference]: With dead ends: 612 [2022-07-21 05:19:26,536 INFO L226 Difference]: Without dead ends: 335 [2022-07-21 05:19:26,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:26,537 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 15 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:26,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 807 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:26,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-07-21 05:19:26,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2022-07-21 05:19:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 270 states have (on average 1.348148148148148) internal successors, (364), 274 states have internal predecessors, (364), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-21 05:19:26,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 470 transitions. [2022-07-21 05:19:26,547 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 470 transitions. Word has length 105 [2022-07-21 05:19:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:26,547 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 470 transitions. [2022-07-21 05:19:26,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 05:19:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 470 transitions. [2022-07-21 05:19:26,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-21 05:19:26,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:26,548 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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 05:19:26,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 05:19:26,549 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:26,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:26,549 INFO L85 PathProgramCache]: Analyzing trace with hash 435829863, now seen corresponding path program 1 times [2022-07-21 05:19:26,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:26,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037483656] [2022-07-21 05:19:26,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:26,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:26,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:26,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:26,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,618 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-21 05:19:26,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:26,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037483656] [2022-07-21 05:19:26,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037483656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:26,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:26,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:26,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798945283] [2022-07-21 05:19:26,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:26,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:26,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:26,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:26,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:26,624 INFO L87 Difference]: Start difference. First operand 335 states and 470 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 05:19:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:26,643 INFO L93 Difference]: Finished difference Result 587 states and 842 transitions. [2022-07-21 05:19:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:26,644 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2022-07-21 05:19:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:26,645 INFO L225 Difference]: With dead ends: 587 [2022-07-21 05:19:26,646 INFO L226 Difference]: Without dead ends: 337 [2022-07-21 05:19:26,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:26,647 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 0 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:26,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1113 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:26,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-07-21 05:19:26,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 335. [2022-07-21 05:19:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 270 states have (on average 1.337037037037037) internal successors, (361), 274 states have internal predecessors, (361), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-07-21 05:19:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 467 transitions. [2022-07-21 05:19:26,657 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 467 transitions. Word has length 124 [2022-07-21 05:19:26,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:26,658 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 467 transitions. [2022-07-21 05:19:26,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 05:19:26,658 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 467 transitions. [2022-07-21 05:19:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-21 05:19:26,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:26,660 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 05:19:26,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:19:26,660 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:26,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:26,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1733513262, now seen corresponding path program 1 times [2022-07-21 05:19:26,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:26,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529090988] [2022-07-21 05:19:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:26,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:26,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-21 05:19:26,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:26,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529090988] [2022-07-21 05:19:26,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529090988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:26,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:26,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:26,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169313620] [2022-07-21 05:19:26,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:26,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:26,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:26,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:26,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:26,740 INFO L87 Difference]: Start difference. First operand 335 states and 467 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 05:19:26,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:26,774 INFO L93 Difference]: Finished difference Result 550 states and 802 transitions. [2022-07-21 05:19:26,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:26,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2022-07-21 05:19:26,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:26,776 INFO L225 Difference]: With dead ends: 550 [2022-07-21 05:19:26,776 INFO L226 Difference]: Without dead ends: 333 [2022-07-21 05:19:26,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:26,779 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 13 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:26,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 775 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:26,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-07-21 05:19:26,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2022-07-21 05:19:26,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 269 states have (on average 1.3345724907063197) internal successors, (359), 273 states have internal predecessors, (359), 52 states have call successors, (52), 11 states have call predecessors, (52), 11 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-21 05:19:26,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 463 transitions. [2022-07-21 05:19:26,787 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 463 transitions. Word has length 157 [2022-07-21 05:19:26,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:26,787 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 463 transitions. [2022-07-21 05:19:26,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 05:19:26,787 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 463 transitions. [2022-07-21 05:19:26,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-21 05:19:26,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:26,789 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 05:19:26,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 05:19:26,789 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:26,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash -2146412456, now seen corresponding path program 1 times [2022-07-21 05:19:26,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:26,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659809493] [2022-07-21 05:19:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:26,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 05:19:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2022-07-21 05:19:26,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:26,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659809493] [2022-07-21 05:19:26,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659809493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:26,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:26,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:26,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553305365] [2022-07-21 05:19:26,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:26,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:26,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:26,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:26,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:26,867 INFO L87 Difference]: Start difference. First operand 333 states and 463 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 05:19:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:26,900 INFO L93 Difference]: Finished difference Result 490 states and 698 transitions. [2022-07-21 05:19:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:26,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 176 [2022-07-21 05:19:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:26,902 INFO L225 Difference]: With dead ends: 490 [2022-07-21 05:19:26,902 INFO L226 Difference]: Without dead ends: 316 [2022-07-21 05:19:26,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:26,903 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 35 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:26,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 756 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:26,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-21 05:19:26,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2022-07-21 05:19:26,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 255 states have (on average 1.3254901960784313) internal successors, (338), 259 states have internal predecessors, (338), 49 states have call successors, (49), 11 states have call predecessors, (49), 11 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-21 05:19:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 436 transitions. [2022-07-21 05:19:26,912 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 436 transitions. Word has length 176 [2022-07-21 05:19:26,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:26,912 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 436 transitions. [2022-07-21 05:19:26,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 05:19:26,912 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 436 transitions. [2022-07-21 05:19:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-21 05:19:26,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:26,914 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 05:19:26,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 05:19:26,914 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:26,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:26,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1743531092, now seen corresponding path program 1 times [2022-07-21 05:19:26,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:26,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056099330] [2022-07-21 05:19:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:26,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-21 05:19:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2022-07-21 05:19:26,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:26,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056099330] [2022-07-21 05:19:26,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056099330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:26,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:26,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:26,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88450532] [2022-07-21 05:19:26,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:26,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:26,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:26,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:26,980 INFO L87 Difference]: Start difference. First operand 316 states and 436 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 05:19:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:27,024 INFO L93 Difference]: Finished difference Result 473 states and 671 transitions. [2022-07-21 05:19:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:27,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 178 [2022-07-21 05:19:27,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:27,027 INFO L225 Difference]: With dead ends: 473 [2022-07-21 05:19:27,027 INFO L226 Difference]: Without dead ends: 297 [2022-07-21 05:19:27,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:27,029 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 30 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:27,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 760 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:27,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-07-21 05:19:27,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-07-21 05:19:27,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 239 states have (on average 1.3179916317991631) internal successors, (315), 243 states have internal predecessors, (315), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-21 05:19:27,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 407 transitions. [2022-07-21 05:19:27,037 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 407 transitions. Word has length 178 [2022-07-21 05:19:27,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:27,037 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 407 transitions. [2022-07-21 05:19:27,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-21 05:19:27,038 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 407 transitions. [2022-07-21 05:19:27,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-21 05:19:27,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:27,040 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:27,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 05:19:27,040 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:27,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:27,041 INFO L85 PathProgramCache]: Analyzing trace with hash -892980879, now seen corresponding path program 1 times [2022-07-21 05:19:27,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:27,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598923213] [2022-07-21 05:19:27,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:27,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:27,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:27,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-21 05:19:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-07-21 05:19:27,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:27,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598923213] [2022-07-21 05:19:27,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598923213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:27,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:27,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:27,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774123446] [2022-07-21 05:19:27,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:27,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:27,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:27,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:27,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:27,128 INFO L87 Difference]: Start difference. First operand 297 states and 407 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 05:19:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:27,141 INFO L93 Difference]: Finished difference Result 453 states and 641 transitions. [2022-07-21 05:19:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 179 [2022-07-21 05:19:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:27,143 INFO L225 Difference]: With dead ends: 453 [2022-07-21 05:19:27,143 INFO L226 Difference]: Without dead ends: 297 [2022-07-21 05:19:27,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:27,144 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 0 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:27,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1092 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:27,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-07-21 05:19:27,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-07-21 05:19:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 239 states have (on average 1.292887029288703) internal successors, (309), 243 states have internal predecessors, (309), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-21 05:19:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 401 transitions. [2022-07-21 05:19:27,152 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 401 transitions. Word has length 179 [2022-07-21 05:19:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:27,152 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 401 transitions. [2022-07-21 05:19:27,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-21 05:19:27,152 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 401 transitions. [2022-07-21 05:19:27,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-21 05:19:27,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:27,154 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 05:19:27,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 05:19:27,155 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:27,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash 2002114655, now seen corresponding path program 1 times [2022-07-21 05:19:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:27,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820096912] [2022-07-21 05:19:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:27,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 05:19:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-21 05:19:27,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:27,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820096912] [2022-07-21 05:19:27,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820096912] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:27,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015645077] [2022-07-21 05:19:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:27,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:27,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:27,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:27,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 05:19:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 05:19:27,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-21 05:19:27,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2022-07-21 05:19:27,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015645077] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:27,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:19:27,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2022-07-21 05:19:27,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221909841] [2022-07-21 05:19:27,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:27,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:27,482 INFO L87 Difference]: Start difference. First operand 297 states and 401 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:27,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:27,509 INFO L93 Difference]: Finished difference Result 474 states and 663 transitions. [2022-07-21 05:19:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:27,510 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 186 [2022-07-21 05:19:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:27,511 INFO L225 Difference]: With dead ends: 474 [2022-07-21 05:19:27,511 INFO L226 Difference]: Without dead ends: 276 [2022-07-21 05:19:27,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:27,512 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 35 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:27,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 519 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:27,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-21 05:19:27,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2022-07-21 05:19:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 221 states have (on average 1.2850678733031675) internal successors, (284), 225 states have internal predecessors, (284), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-21 05:19:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 370 transitions. [2022-07-21 05:19:27,519 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 370 transitions. Word has length 186 [2022-07-21 05:19:27,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:27,520 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 370 transitions. [2022-07-21 05:19:27,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 05:19:27,520 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 370 transitions. [2022-07-21 05:19:27,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-21 05:19:27,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:27,531 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 05:19:27,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:27,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-21 05:19:27,747 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:27,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:27,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1523071826, now seen corresponding path program 1 times [2022-07-21 05:19:27,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:27,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201332700] [2022-07-21 05:19:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:27,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-21 05:19:27,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:27,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201332700] [2022-07-21 05:19:27,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201332700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:27,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:27,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:27,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884330741] [2022-07-21 05:19:27,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:27,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:27,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:27,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:27,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:27,834 INFO L87 Difference]: Start difference. First operand 276 states and 370 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 05:19:27,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:27,856 INFO L93 Difference]: Finished difference Result 431 states and 604 transitions. [2022-07-21 05:19:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:27,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 210 [2022-07-21 05:19:27,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:27,857 INFO L225 Difference]: With dead ends: 431 [2022-07-21 05:19:27,857 INFO L226 Difference]: Without dead ends: 282 [2022-07-21 05:19:27,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:27,858 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 6 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:27,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 800 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:27,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-07-21 05:19:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2022-07-21 05:19:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 224 states have (on average 1.28125) internal successors, (287), 228 states have internal predecessors, (287), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-21 05:19:27,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 373 transitions. [2022-07-21 05:19:27,865 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 373 transitions. Word has length 210 [2022-07-21 05:19:27,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:27,867 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 373 transitions. [2022-07-21 05:19:27,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 05:19:27,867 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 373 transitions. [2022-07-21 05:19:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-21 05:19:27,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:27,869 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:27,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 05:19:27,869 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:27,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:27,870 INFO L85 PathProgramCache]: Analyzing trace with hash 45888737, now seen corresponding path program 1 times [2022-07-21 05:19:27,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:27,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667301126] [2022-07-21 05:19:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:27,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:27,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:27,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:27,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-21 05:19:27,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:27,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667301126] [2022-07-21 05:19:27,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667301126] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:27,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329780597] [2022-07-21 05:19:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:27,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:27,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:27,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:27,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 05:19:28,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 05:19:28,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2022-07-21 05:19:28,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:19:28,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329780597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:28,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:19:28,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-21 05:19:28,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903864155] [2022-07-21 05:19:28,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:28,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:28,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:28,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:28,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:28,128 INFO L87 Difference]: Start difference. First operand 280 states and 373 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 05:19:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:28,149 INFO L93 Difference]: Finished difference Result 440 states and 611 transitions. [2022-07-21 05:19:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:28,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 219 [2022-07-21 05:19:28,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:28,151 INFO L225 Difference]: With dead ends: 440 [2022-07-21 05:19:28,151 INFO L226 Difference]: Without dead ends: 287 [2022-07-21 05:19:28,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:19:28,152 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 7 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:28,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 805 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:28,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-07-21 05:19:28,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2022-07-21 05:19:28,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 228 states have (on average 1.2763157894736843) internal successors, (291), 232 states have internal predecessors, (291), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-21 05:19:28,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 377 transitions. [2022-07-21 05:19:28,159 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 377 transitions. Word has length 219 [2022-07-21 05:19:28,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:28,160 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 377 transitions. [2022-07-21 05:19:28,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 05:19:28,160 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 377 transitions. [2022-07-21 05:19:28,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-21 05:19:28,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:28,161 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:28,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:28,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:28,376 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:28,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:28,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1724470702, now seen corresponding path program 1 times [2022-07-21 05:19:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:28,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472746482] [2022-07-21 05:19:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:28,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:28,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:28,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:28,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-21 05:19:28,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:28,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472746482] [2022-07-21 05:19:28,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472746482] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:28,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184535879] [2022-07-21 05:19:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:28,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:28,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:28,457 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:28,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 05:19:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 05:19:28,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:28,604 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2022-07-21 05:19:28,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:19:28,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184535879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:28,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:19:28,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-21 05:19:28,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834658251] [2022-07-21 05:19:28,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:28,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:28,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:28,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:28,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:28,606 INFO L87 Difference]: Start difference. First operand 285 states and 377 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 05:19:28,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:28,626 INFO L93 Difference]: Finished difference Result 442 states and 609 transitions. [2022-07-21 05:19:28,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:28,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 229 [2022-07-21 05:19:28,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:28,628 INFO L225 Difference]: With dead ends: 442 [2022-07-21 05:19:28,628 INFO L226 Difference]: Without dead ends: 284 [2022-07-21 05:19:28,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:19:28,629 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 7 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:28,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 791 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:28,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-07-21 05:19:28,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-07-21 05:19:28,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 228 states have (on average 1.263157894736842) internal successors, (288), 231 states have internal predecessors, (288), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-21 05:19:28,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 372 transitions. [2022-07-21 05:19:28,636 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 372 transitions. Word has length 229 [2022-07-21 05:19:28,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:28,636 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 372 transitions. [2022-07-21 05:19:28,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-21 05:19:28,636 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 372 transitions. [2022-07-21 05:19:28,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-21 05:19:28,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:28,638 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:28,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:28,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:28,857 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:28,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:28,858 INFO L85 PathProgramCache]: Analyzing trace with hash -88373812, now seen corresponding path program 1 times [2022-07-21 05:19:28,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:28,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632950995] [2022-07-21 05:19:28,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:28,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:28,959 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-07-21 05:19:28,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:28,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632950995] [2022-07-21 05:19:28,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632950995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:28,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:28,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:28,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603977928] [2022-07-21 05:19:28,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:28,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:28,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:28,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:28,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:28,961 INFO L87 Difference]: Start difference. First operand 284 states and 372 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-21 05:19:29,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:29,188 INFO L93 Difference]: Finished difference Result 484 states and 672 transitions. [2022-07-21 05:19:29,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:19:29,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 238 [2022-07-21 05:19:29,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:29,201 INFO L225 Difference]: With dead ends: 484 [2022-07-21 05:19:29,201 INFO L226 Difference]: Without dead ends: 327 [2022-07-21 05:19:29,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:29,202 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 183 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:29,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 639 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:19:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-21 05:19:29,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 283. [2022-07-21 05:19:29,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 228 states have (on average 1.2587719298245614) internal successors, (287), 230 states have internal predecessors, (287), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2022-07-21 05:19:29,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 369 transitions. [2022-07-21 05:19:29,211 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 369 transitions. Word has length 238 [2022-07-21 05:19:29,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:29,211 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 369 transitions. [2022-07-21 05:19:29,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-21 05:19:29,211 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 369 transitions. [2022-07-21 05:19:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-21 05:19:29,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:29,213 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 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 05:19:29,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 05:19:29,213 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:29,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:29,213 INFO L85 PathProgramCache]: Analyzing trace with hash -284812756, now seen corresponding path program 1 times [2022-07-21 05:19:29,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:29,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671861247] [2022-07-21 05:19:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:29,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:29,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2022-07-21 05:19:29,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:29,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671861247] [2022-07-21 05:19:29,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671861247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:29,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:29,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:29,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858101620] [2022-07-21 05:19:29,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:29,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:29,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:29,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:29,340 INFO L87 Difference]: Start difference. First operand 283 states and 369 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 05:19:29,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:29,803 INFO L93 Difference]: Finished difference Result 670 states and 903 transitions. [2022-07-21 05:19:29,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 05:19:29,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 241 [2022-07-21 05:19:29,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:29,806 INFO L225 Difference]: With dead ends: 670 [2022-07-21 05:19:29,806 INFO L226 Difference]: Without dead ends: 514 [2022-07-21 05:19:29,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:29,807 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 433 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:29,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 800 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 05:19:29,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-07-21 05:19:29,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 505. [2022-07-21 05:19:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 403 states have (on average 1.3101736972704714) internal successors, (528), 405 states have internal predecessors, (528), 70 states have call successors, (70), 31 states have call predecessors, (70), 31 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2022-07-21 05:19:29,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 668 transitions. [2022-07-21 05:19:29,826 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 668 transitions. Word has length 241 [2022-07-21 05:19:29,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:29,826 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 668 transitions. [2022-07-21 05:19:29,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 05:19:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 668 transitions. [2022-07-21 05:19:29,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-21 05:19:29,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:29,829 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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 05:19:29,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 05:19:29,829 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:29,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:29,829 INFO L85 PathProgramCache]: Analyzing trace with hash -571150504, now seen corresponding path program 1 times [2022-07-21 05:19:29,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:29,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156061353] [2022-07-21 05:19:29,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:29,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:29,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2022-07-21 05:19:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-21 05:19:29,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-21 05:19:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-21 05:19:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-07-21 05:19:29,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:29,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156061353] [2022-07-21 05:19:29,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156061353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:29,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:29,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:29,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022873462] [2022-07-21 05:19:29,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:29,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:29,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:29,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:29,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:29,915 INFO L87 Difference]: Start difference. First operand 505 states and 668 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 05:19:30,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:30,208 INFO L93 Difference]: Finished difference Result 1106 states and 1514 transitions. [2022-07-21 05:19:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:30,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 272 [2022-07-21 05:19:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:30,211 INFO L225 Difference]: With dead ends: 1106 [2022-07-21 05:19:30,211 INFO L226 Difference]: Without dead ends: 809 [2022-07-21 05:19:30,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:30,212 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 222 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:30,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 598 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:19:30,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-07-21 05:19:30,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 640. [2022-07-21 05:19:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 513 states have (on average 1.3177387914230019) internal successors, (676), 519 states have internal predecessors, (676), 85 states have call successors, (85), 41 states have call predecessors, (85), 41 states have return successors, (85), 81 states have call predecessors, (85), 85 states have call successors, (85) [2022-07-21 05:19:30,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 846 transitions. [2022-07-21 05:19:30,236 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 846 transitions. Word has length 272 [2022-07-21 05:19:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:30,237 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 846 transitions. [2022-07-21 05:19:30,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 05:19:30,237 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 846 transitions. [2022-07-21 05:19:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-21 05:19:30,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:30,239 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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 05:19:30,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 05:19:30,239 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:30,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:30,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1395588113, now seen corresponding path program 1 times [2022-07-21 05:19:30,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:30,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202482911] [2022-07-21 05:19:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:30,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:30,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-07-21 05:19:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-21 05:19:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2022-07-21 05:19:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-21 05:19:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-07-21 05:19:30,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:30,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202482911] [2022-07-21 05:19:30,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202482911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:30,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:30,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:30,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624597086] [2022-07-21 05:19:30,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:30,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:30,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:30,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:30,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:30,319 INFO L87 Difference]: Start difference. First operand 640 states and 846 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 05:19:30,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:30,600 INFO L93 Difference]: Finished difference Result 1410 states and 1914 transitions. [2022-07-21 05:19:30,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:30,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 273 [2022-07-21 05:19:30,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:30,604 INFO L225 Difference]: With dead ends: 1410 [2022-07-21 05:19:30,604 INFO L226 Difference]: Without dead ends: 1017 [2022-07-21 05:19:30,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:30,606 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 225 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:30,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 631 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:19:30,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-07-21 05:19:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1003. [2022-07-21 05:19:30,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 796 states have (on average 1.342964824120603) internal successors, (1069), 810 states have internal predecessors, (1069), 139 states have call successors, (139), 67 states have call predecessors, (139), 67 states have return successors, (139), 129 states have call predecessors, (139), 139 states have call successors, (139) [2022-07-21 05:19:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1347 transitions. [2022-07-21 05:19:30,647 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1347 transitions. Word has length 273 [2022-07-21 05:19:30,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:30,647 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1347 transitions. [2022-07-21 05:19:30,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 05:19:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1347 transitions. [2022-07-21 05:19:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-21 05:19:30,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:30,650 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1] [2022-07-21 05:19:30,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 05:19:30,650 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:30,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:30,651 INFO L85 PathProgramCache]: Analyzing trace with hash -898457517, now seen corresponding path program 1 times [2022-07-21 05:19:30,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:30,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667784405] [2022-07-21 05:19:30,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:30,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:30,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-21 05:19:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-21 05:19:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-07-21 05:19:30,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:30,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667784405] [2022-07-21 05:19:30,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667784405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:30,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:30,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:19:30,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453803174] [2022-07-21 05:19:30,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:30,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:30,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:30,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:30,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:19:30,733 INFO L87 Difference]: Start difference. First operand 1003 states and 1347 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 05:19:31,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:31,048 INFO L93 Difference]: Finished difference Result 2319 states and 3189 transitions. [2022-07-21 05:19:31,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:31,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 274 [2022-07-21 05:19:31,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:31,054 INFO L225 Difference]: With dead ends: 2319 [2022-07-21 05:19:31,054 INFO L226 Difference]: Without dead ends: 1609 [2022-07-21 05:19:31,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:31,056 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 227 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:31,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 663 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:19:31,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2022-07-21 05:19:31,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1583. [2022-07-21 05:19:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1244 states have (on average 1.367363344051447) internal successors, (1701), 1272 states have internal predecessors, (1701), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2022-07-21 05:19:31,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2163 transitions. [2022-07-21 05:19:31,148 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2163 transitions. Word has length 274 [2022-07-21 05:19:31,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:31,149 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2163 transitions. [2022-07-21 05:19:31,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 05:19:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2163 transitions. [2022-07-21 05:19:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-21 05:19:31,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:31,152 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1] [2022-07-21 05:19:31,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 05:19:31,152 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:31,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:31,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1292824303, now seen corresponding path program 1 times [2022-07-21 05:19:31,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:31,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118171808] [2022-07-21 05:19:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:31,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2022-07-21 05:19:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-21 05:19:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-21 05:19:31,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:31,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118171808] [2022-07-21 05:19:31,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118171808] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:31,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396212737] [2022-07-21 05:19:31,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:31,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:31,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:31,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:31,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 05:19:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 05:19:31,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:31,462 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2022-07-21 05:19:31,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:19:31,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396212737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:31,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:19:31,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-21 05:19:31,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637602344] [2022-07-21 05:19:31,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:31,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:31,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:31,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:31,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:19:31,464 INFO L87 Difference]: Start difference. First operand 1583 states and 2163 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 05:19:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:31,562 INFO L93 Difference]: Finished difference Result 2913 states and 4038 transitions. [2022-07-21 05:19:31,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:31,562 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 274 [2022-07-21 05:19:31,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:31,568 INFO L225 Difference]: With dead ends: 2913 [2022-07-21 05:19:31,568 INFO L226 Difference]: Without dead ends: 1583 [2022-07-21 05:19:31,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:19:31,572 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 51 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:31,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 708 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-07-21 05:19:31,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1583. [2022-07-21 05:19:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1244 states have (on average 1.3480707395498392) internal successors, (1677), 1272 states have internal predecessors, (1677), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2022-07-21 05:19:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2139 transitions. [2022-07-21 05:19:31,645 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2139 transitions. Word has length 274 [2022-07-21 05:19:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:31,645 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2139 transitions. [2022-07-21 05:19:31,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 05:19:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2139 transitions. [2022-07-21 05:19:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-07-21 05:19:31,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:31,647 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1] [2022-07-21 05:19:31,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:31,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-21 05:19:31,866 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:31,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:31,866 INFO L85 PathProgramCache]: Analyzing trace with hash -78372800, now seen corresponding path program 1 times [2022-07-21 05:19:31,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:31,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336869182] [2022-07-21 05:19:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:31,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 05:19:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2022-07-21 05:19:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2022-07-21 05:19:31,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:31,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336869182] [2022-07-21 05:19:31,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336869182] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:31,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784593649] [2022-07-21 05:19:31,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:31,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:31,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:31,962 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:31,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 05:19:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 05:19:32,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2022-07-21 05:19:32,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:19:32,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784593649] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:32,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:19:32,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-21 05:19:32,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863088042] [2022-07-21 05:19:32,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:32,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:32,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:32,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:32,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:19:32,130 INFO L87 Difference]: Start difference. First operand 1583 states and 2139 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 05:19:32,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:32,228 INFO L93 Difference]: Finished difference Result 2913 states and 3982 transitions. [2022-07-21 05:19:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:32,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 275 [2022-07-21 05:19:32,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:32,234 INFO L225 Difference]: With dead ends: 2913 [2022-07-21 05:19:32,234 INFO L226 Difference]: Without dead ends: 1631 [2022-07-21 05:19:32,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 05:19:32,237 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 15 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:32,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 731 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:32,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2022-07-21 05:19:32,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2022-07-21 05:19:32,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1284 states have (on average 1.3496884735202492) internal successors, (1733), 1312 states have internal predecessors, (1733), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2022-07-21 05:19:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2195 transitions. [2022-07-21 05:19:32,301 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2195 transitions. Word has length 275 [2022-07-21 05:19:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:32,301 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2195 transitions. [2022-07-21 05:19:32,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 05:19:32,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2195 transitions. [2022-07-21 05:19:32,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2022-07-21 05:19:32,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:32,303 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1] [2022-07-21 05:19:32,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:32,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-21 05:19:32,520 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:32,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:32,520 INFO L85 PathProgramCache]: Analyzing trace with hash 524917483, now seen corresponding path program 1 times [2022-07-21 05:19:32,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:32,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886380187] [2022-07-21 05:19:32,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:32,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 05:19:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-21 05:19:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:32,649 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2022-07-21 05:19:32,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:32,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886380187] [2022-07-21 05:19:32,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886380187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:32,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:32,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:32,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690579489] [2022-07-21 05:19:32,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:32,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:32,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:32,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:32,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:32,651 INFO L87 Difference]: Start difference. First operand 1631 states and 2195 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-21 05:19:33,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:33,096 INFO L93 Difference]: Finished difference Result 2497 states and 3590 transitions. [2022-07-21 05:19:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 05:19:33,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 276 [2022-07-21 05:19:33,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:33,106 INFO L225 Difference]: With dead ends: 2497 [2022-07-21 05:19:33,106 INFO L226 Difference]: Without dead ends: 2495 [2022-07-21 05:19:33,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-21 05:19:33,108 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 254 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:33,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1650 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 05:19:33,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2022-07-21 05:19:33,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1679. [2022-07-21 05:19:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1316 states have (on average 1.3411854103343466) internal successors, (1765), 1352 states have internal predecessors, (1765), 239 states have call successors, (239), 123 states have call predecessors, (239), 123 states have return successors, (239), 211 states have call predecessors, (239), 239 states have call successors, (239) [2022-07-21 05:19:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2243 transitions. [2022-07-21 05:19:33,207 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2243 transitions. Word has length 276 [2022-07-21 05:19:33,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:33,207 INFO L495 AbstractCegarLoop]: Abstraction has 1679 states and 2243 transitions. [2022-07-21 05:19:33,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-21 05:19:33,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2243 transitions. [2022-07-21 05:19:33,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-07-21 05:19:33,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:33,211 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:33,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 05:19:33,211 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:33,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:33,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1725038329, now seen corresponding path program 1 times [2022-07-21 05:19:33,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:33,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128549135] [2022-07-21 05:19:33,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:33,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:33,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 05:19:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-21 05:19:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-21 05:19:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,360 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-07-21 05:19:33,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:33,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128549135] [2022-07-21 05:19:33,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128549135] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:33,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944440057] [2022-07-21 05:19:33,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:33,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:33,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:33,362 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:33,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 05:19:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:33,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 05:19:33,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 251 proven. 37 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2022-07-21 05:19:33,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2022-07-21 05:19:33,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944440057] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:33,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:33,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2022-07-21 05:19:33,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152647386] [2022-07-21 05:19:33,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:33,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 05:19:33,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:33,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 05:19:33,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-07-21 05:19:33,889 INFO L87 Difference]: Start difference. First operand 1679 states and 2243 transitions. Second operand has 19 states, 19 states have (on average 8.263157894736842) internal successors, (157), 14 states have internal predecessors, (157), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-21 05:19:35,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:35,452 INFO L93 Difference]: Finished difference Result 4922 states and 7094 transitions. [2022-07-21 05:19:35,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-21 05:19:35,453 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.263157894736842) internal successors, (157), 14 states have internal predecessors, (157), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 284 [2022-07-21 05:19:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:35,467 INFO L225 Difference]: With dead ends: 4922 [2022-07-21 05:19:35,467 INFO L226 Difference]: Without dead ends: 3544 [2022-07-21 05:19:35,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 617 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 05:19:35,471 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 776 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 2079 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 2325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:35,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 2687 Invalid, 2325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2079 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 05:19:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2022-07-21 05:19:35,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 2498. [2022-07-21 05:19:35,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 1952 states have (on average 1.3288934426229508) internal successors, (2594), 2004 states have internal predecessors, (2594), 356 states have call successors, (356), 183 states have call predecessors, (356), 189 states have return successors, (364), 318 states have call predecessors, (364), 356 states have call successors, (364) [2022-07-21 05:19:35,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3314 transitions. [2022-07-21 05:19:35,596 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3314 transitions. Word has length 284 [2022-07-21 05:19:35,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:35,596 INFO L495 AbstractCegarLoop]: Abstraction has 2498 states and 3314 transitions. [2022-07-21 05:19:35,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.263157894736842) internal successors, (157), 14 states have internal predecessors, (157), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2022-07-21 05:19:35,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3314 transitions. [2022-07-21 05:19:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2022-07-21 05:19:35,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:35,600 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:35,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:35,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:35,819 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:35,820 INFO L85 PathProgramCache]: Analyzing trace with hash -763424312, now seen corresponding path program 1 times [2022-07-21 05:19:35,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:35,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566217350] [2022-07-21 05:19:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:35,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:35,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:35,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 05:19:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-21 05:19:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-21 05:19:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2022-07-21 05:19:35,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:35,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566217350] [2022-07-21 05:19:35,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566217350] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:35,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546952488] [2022-07-21 05:19:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:35,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:35,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:35,918 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:35,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 05:19:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 05:19:36,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2022-07-21 05:19:36,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:19:36,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546952488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:36,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:19:36,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-21 05:19:36,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406942459] [2022-07-21 05:19:36,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:36,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:36,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:36,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:36,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:36,110 INFO L87 Difference]: Start difference. First operand 2498 states and 3314 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 05:19:36,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:36,220 INFO L93 Difference]: Finished difference Result 4829 states and 6504 transitions. [2022-07-21 05:19:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:36,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 284 [2022-07-21 05:19:36,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:36,229 INFO L225 Difference]: With dead ends: 4829 [2022-07-21 05:19:36,229 INFO L226 Difference]: Without dead ends: 2434 [2022-07-21 05:19:36,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:19:36,234 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 11 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:36,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 731 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:36,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2022-07-21 05:19:36,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2434. [2022-07-21 05:19:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 1908 states have (on average 1.3123689727463312) internal successors, (2504), 1960 states have internal predecessors, (2504), 340 states have call successors, (340), 183 states have call predecessors, (340), 185 states have return successors, (344), 298 states have call predecessors, (344), 340 states have call successors, (344) [2022-07-21 05:19:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3188 transitions. [2022-07-21 05:19:36,366 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 3188 transitions. Word has length 284 [2022-07-21 05:19:36,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:36,366 INFO L495 AbstractCegarLoop]: Abstraction has 2434 states and 3188 transitions. [2022-07-21 05:19:36,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 05:19:36,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 3188 transitions. [2022-07-21 05:19:36,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2022-07-21 05:19:36,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:36,370 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:36,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:36,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:36,588 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:36,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:36,588 INFO L85 PathProgramCache]: Analyzing trace with hash -455145673, now seen corresponding path program 1 times [2022-07-21 05:19:36,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:36,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376812039] [2022-07-21 05:19:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:36,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:36,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-21 05:19:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 05:19:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 05:19:36,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-21 05:19:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-21 05:19:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 05:19:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-21 05:19:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-21 05:19:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-21 05:19:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-21 05:19:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-21 05:19:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,657 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2022-07-21 05:19:36,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:36,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376812039] [2022-07-21 05:19:36,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376812039] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:36,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347086039] [2022-07-21 05:19:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:36,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:36,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:36,659 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:36,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 05:19:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:36,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 05:19:36,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2022-07-21 05:19:36,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:19:36,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347086039] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:36,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:19:36,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-21 05:19:36,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178092450] [2022-07-21 05:19:36,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:36,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:36,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:36,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:36,835 INFO L87 Difference]: Start difference. First operand 2434 states and 3188 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:19:36,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:36,954 INFO L93 Difference]: Finished difference Result 4590 states and 6117 transitions. [2022-07-21 05:19:36,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:19:36,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 287 [2022-07-21 05:19:36,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:36,964 INFO L225 Difference]: With dead ends: 4590 [2022-07-21 05:19:36,964 INFO L226 Difference]: Without dead ends: 2241 [2022-07-21 05:19:36,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:19:36,970 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 8 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:36,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 734 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:19:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2022-07-21 05:19:37,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2241. [2022-07-21 05:19:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 1745 states have (on average 1.3060171919770773) internal successors, (2279), 1797 states have internal predecessors, (2279), 323 states have call successors, (323), 172 states have call predecessors, (323), 172 states have return successors, (323), 279 states have call predecessors, (323), 323 states have call successors, (323) [2022-07-21 05:19:37,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 2925 transitions. [2022-07-21 05:19:37,065 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 2925 transitions. Word has length 287 [2022-07-21 05:19:37,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:37,065 INFO L495 AbstractCegarLoop]: Abstraction has 2241 states and 2925 transitions. [2022-07-21 05:19:37,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-21 05:19:37,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 2925 transitions. [2022-07-21 05:19:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-07-21 05:19:37,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:37,068 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:37,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:37,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:37,283 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:37,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1145505540, now seen corresponding path program 1 times [2022-07-21 05:19:37,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:37,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257679939] [2022-07-21 05:19:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:37,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:37,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 05:19:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-21 05:19:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-07-21 05:19:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-21 05:19:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-07-21 05:19:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2022-07-21 05:19:37,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:37,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257679939] [2022-07-21 05:19:37,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257679939] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:37,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306092106] [2022-07-21 05:19:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:37,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:37,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:37,458 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:37,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 05:19:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:37,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 05:19:37,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2022-07-21 05:19:37,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:19:37,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306092106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:37,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:19:37,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2022-07-21 05:19:37,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653224271] [2022-07-21 05:19:37,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:37,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:19:37,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:19:37,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2022-07-21 05:19:37,809 INFO L87 Difference]: Start difference. First operand 2241 states and 2925 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 05:19:38,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:38,732 INFO L93 Difference]: Finished difference Result 8309 states and 11263 transitions. [2022-07-21 05:19:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 05:19:38,733 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 299 [2022-07-21 05:19:38,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:38,758 INFO L225 Difference]: With dead ends: 8309 [2022-07-21 05:19:38,758 INFO L226 Difference]: Without dead ends: 6727 [2022-07-21 05:19:38,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-07-21 05:19:38,763 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1222 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 3372 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:38,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 3372 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 05:19:38,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6727 states. [2022-07-21 05:19:39,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6727 to 4823. [2022-07-21 05:19:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4823 states, 3712 states have (on average 1.3014547413793103) internal successors, (4831), 3824 states have internal predecessors, (4831), 727 states have call successors, (727), 383 states have call predecessors, (727), 383 states have return successors, (727), 623 states have call predecessors, (727), 727 states have call successors, (727) [2022-07-21 05:19:39,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4823 states to 4823 states and 6285 transitions. [2022-07-21 05:19:39,050 INFO L78 Accepts]: Start accepts. Automaton has 4823 states and 6285 transitions. Word has length 299 [2022-07-21 05:19:39,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:39,051 INFO L495 AbstractCegarLoop]: Abstraction has 4823 states and 6285 transitions. [2022-07-21 05:19:39,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 05:19:39,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4823 states and 6285 transitions. [2022-07-21 05:19:39,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-07-21 05:19:39,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:39,053 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:39,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:39,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-21 05:19:39,267 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:39,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:39,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1176765881, now seen corresponding path program 1 times [2022-07-21 05:19:39,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:39,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541815135] [2022-07-21 05:19:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:39,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:39,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:39,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 05:19:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-21 05:19:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-07-21 05:19:39,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-07-21 05:19:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-07-21 05:19:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:39,367 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2022-07-21 05:19:39,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:39,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541815135] [2022-07-21 05:19:39,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541815135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:39,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:39,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:19:39,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43380695] [2022-07-21 05:19:39,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:39,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:19:39,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:39,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:19:39,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:39,370 INFO L87 Difference]: Start difference. First operand 4823 states and 6285 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 05:19:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:40,189 INFO L93 Difference]: Finished difference Result 15327 states and 22049 transitions. [2022-07-21 05:19:40,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:19:40,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 305 [2022-07-21 05:19:40,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:40,221 INFO L225 Difference]: With dead ends: 15327 [2022-07-21 05:19:40,221 INFO L226 Difference]: Without dead ends: 11031 [2022-07-21 05:19:40,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:19:40,231 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 472 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:40,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 2244 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 05:19:40,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11031 states. [2022-07-21 05:19:40,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11031 to 5203. [2022-07-21 05:19:40,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 4020 states have (on average 1.3121890547263682) internal successors, (5275), 4132 states have internal predecessors, (5275), 799 states have call successors, (799), 383 states have call predecessors, (799), 383 states have return successors, (799), 695 states have call predecessors, (799), 799 states have call successors, (799) [2022-07-21 05:19:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 6873 transitions. [2022-07-21 05:19:40,553 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 6873 transitions. Word has length 305 [2022-07-21 05:19:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:40,553 INFO L495 AbstractCegarLoop]: Abstraction has 5203 states and 6873 transitions. [2022-07-21 05:19:40,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 05:19:40,554 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 6873 transitions. [2022-07-21 05:19:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-07-21 05:19:40,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:40,556 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:40,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-21 05:19:40,557 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:40,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:40,558 INFO L85 PathProgramCache]: Analyzing trace with hash -653649099, now seen corresponding path program 1 times [2022-07-21 05:19:40,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:40,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765982208] [2022-07-21 05:19:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:40,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:40,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:40,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 05:19:40,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-21 05:19:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-07-21 05:19:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-07-21 05:19:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-07-21 05:19:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2022-07-21 05:19:40,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:40,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765982208] [2022-07-21 05:19:40,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765982208] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:40,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145385779] [2022-07-21 05:19:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:40,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:40,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:40,719 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:40,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 05:19:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:40,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 05:19:40,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:41,040 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-07-21 05:19:41,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:19:41,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145385779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:41,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:19:41,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2022-07-21 05:19:41,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971736455] [2022-07-21 05:19:41,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:41,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:19:41,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:41,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:19:41,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:19:41,043 INFO L87 Difference]: Start difference. First operand 5203 states and 6873 transitions. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 9 states have internal predecessors, (118), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 05:19:42,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:42,257 INFO L93 Difference]: Finished difference Result 12343 states and 16827 transitions. [2022-07-21 05:19:42,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 05:19:42,258 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 9 states have internal predecessors, (118), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 305 [2022-07-21 05:19:42,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:42,278 INFO L225 Difference]: With dead ends: 12343 [2022-07-21 05:19:42,278 INFO L226 Difference]: Without dead ends: 7695 [2022-07-21 05:19:42,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 05:19:42,288 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 1447 mSDsluCounter, 3125 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 3598 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:42,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 3598 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 05:19:42,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7695 states. [2022-07-21 05:19:42,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7695 to 5131. [2022-07-21 05:19:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5131 states, 3960 states have (on average 1.3037878787878787) internal successors, (5163), 4072 states have internal predecessors, (5163), 787 states have call successors, (787), 383 states have call predecessors, (787), 383 states have return successors, (787), 683 states have call predecessors, (787), 787 states have call successors, (787) [2022-07-21 05:19:42,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5131 states to 5131 states and 6737 transitions. [2022-07-21 05:19:42,612 INFO L78 Accepts]: Start accepts. Automaton has 5131 states and 6737 transitions. Word has length 305 [2022-07-21 05:19:42,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:42,613 INFO L495 AbstractCegarLoop]: Abstraction has 5131 states and 6737 transitions. [2022-07-21 05:19:42,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.8) internal successors, (118), 9 states have internal predecessors, (118), 4 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-21 05:19:42,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5131 states and 6737 transitions. [2022-07-21 05:19:42,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-07-21 05:19:42,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:42,616 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:42,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:42,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-21 05:19:42,821 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:42,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:42,821 INFO L85 PathProgramCache]: Analyzing trace with hash 21684021, now seen corresponding path program 1 times [2022-07-21 05:19:42,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:42,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146268396] [2022-07-21 05:19:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:42,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 05:19:42,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-21 05:19:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2022-07-21 05:19:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-07-21 05:19:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-07-21 05:19:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2022-07-21 05:19:42,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:42,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146268396] [2022-07-21 05:19:42,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146268396] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:42,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538199686] [2022-07-21 05:19:42,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:42,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:42,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:42,957 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:42,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 05:19:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:43,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 05:19:43,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2022-07-21 05:19:43,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:19:43,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538199686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:43,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:19:43,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2022-07-21 05:19:43,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426766506] [2022-07-21 05:19:43,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:43,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 05:19:43,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:43,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 05:19:43,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2022-07-21 05:19:43,273 INFO L87 Difference]: Start difference. First operand 5131 states and 6737 transitions. Second operand has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 05:19:44,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:44,481 INFO L93 Difference]: Finished difference Result 14065 states and 19281 transitions. [2022-07-21 05:19:44,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 05:19:44,481 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 305 [2022-07-21 05:19:44,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:44,504 INFO L225 Difference]: With dead ends: 14065 [2022-07-21 05:19:44,504 INFO L226 Difference]: Without dead ends: 9453 [2022-07-21 05:19:44,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 05:19:44,513 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1318 mSDsluCounter, 2898 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:44,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 3391 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 05:19:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9453 states. [2022-07-21 05:19:44,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9453 to 5701. [2022-07-21 05:19:44,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5701 states, 4398 states have (on average 1.3015006821282402) internal successors, (5724), 4522 states have internal predecessors, (5724), 875 states have call successors, (875), 427 states have call predecessors, (875), 427 states have return successors, (875), 759 states have call predecessors, (875), 875 states have call successors, (875) [2022-07-21 05:19:44,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5701 states to 5701 states and 7474 transitions. [2022-07-21 05:19:44,929 INFO L78 Accepts]: Start accepts. Automaton has 5701 states and 7474 transitions. Word has length 305 [2022-07-21 05:19:44,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:44,930 INFO L495 AbstractCegarLoop]: Abstraction has 5701 states and 7474 transitions. [2022-07-21 05:19:44,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.2) internal successors, (122), 9 states have internal predecessors, (122), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 05:19:44,930 INFO L276 IsEmpty]: Start isEmpty. Operand 5701 states and 7474 transitions. [2022-07-21 05:19:44,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2022-07-21 05:19:44,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:44,933 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 05:19:44,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:45,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-21 05:19:45,147 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:45,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash 2061720331, now seen corresponding path program 1 times [2022-07-21 05:19:45,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:45,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894323881] [2022-07-21 05:19:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:45,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:45,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 05:19:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-21 05:19:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-21 05:19:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-21 05:19:45,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-21 05:19:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-21 05:19:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2022-07-21 05:19:45,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:45,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894323881] [2022-07-21 05:19:45,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894323881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:45,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:19:45,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:19:45,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903655489] [2022-07-21 05:19:45,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:45,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:19:45,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:45,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:19:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:45,238 INFO L87 Difference]: Start difference. First operand 5701 states and 7474 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 05:19:45,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:45,952 INFO L93 Difference]: Finished difference Result 9645 states and 12703 transitions. [2022-07-21 05:19:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 05:19:45,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 318 [2022-07-21 05:19:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:45,983 INFO L225 Difference]: With dead ends: 9645 [2022-07-21 05:19:45,983 INFO L226 Difference]: Without dead ends: 4791 [2022-07-21 05:19:45,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:19:45,993 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 378 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:45,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 1202 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 05:19:45,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2022-07-21 05:19:46,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 4739. [2022-07-21 05:19:46,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4739 states, 3664 states have (on average 1.2879366812227073) internal successors, (4719), 3764 states have internal predecessors, (4719), 723 states have call successors, (723), 351 states have call predecessors, (723), 351 states have return successors, (723), 623 states have call predecessors, (723), 723 states have call successors, (723) [2022-07-21 05:19:46,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4739 states to 4739 states and 6165 transitions. [2022-07-21 05:19:46,254 INFO L78 Accepts]: Start accepts. Automaton has 4739 states and 6165 transitions. Word has length 318 [2022-07-21 05:19:46,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:46,254 INFO L495 AbstractCegarLoop]: Abstraction has 4739 states and 6165 transitions. [2022-07-21 05:19:46,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 05:19:46,255 INFO L276 IsEmpty]: Start isEmpty. Operand 4739 states and 6165 transitions. [2022-07-21 05:19:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-07-21 05:19:46,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:46,261 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:46,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-21 05:19:46,261 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:46,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:46,262 INFO L85 PathProgramCache]: Analyzing trace with hash 192449224, now seen corresponding path program 1 times [2022-07-21 05:19:46,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:46,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470936416] [2022-07-21 05:19:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:46,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:46,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:46,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:46,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 05:19:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-21 05:19:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-21 05:19:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-21 05:19:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-21 05:19:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-21 05:19:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-21 05:19:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-21 05:19:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-21 05:19:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-21 05:19:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-07-21 05:19:46,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 46 proven. 186 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2022-07-21 05:19:46,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:46,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470936416] [2022-07-21 05:19:46,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470936416] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:46,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616873154] [2022-07-21 05:19:46,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:46,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:46,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:46,594 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:46,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 05:19:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:46,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-21 05:19:46,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 198 proven. 114 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2022-07-21 05:19:47,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:19:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 33 proven. 77 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2022-07-21 05:19:47,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616873154] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:19:47,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:19:47,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 30 [2022-07-21 05:19:47,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957451962] [2022-07-21 05:19:47,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:19:47,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-21 05:19:47,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:47,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-21 05:19:47,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2022-07-21 05:19:47,626 INFO L87 Difference]: Start difference. First operand 4739 states and 6165 transitions. Second operand has 30 states, 30 states have (on average 9.366666666666667) internal successors, (281), 24 states have internal predecessors, (281), 7 states have call successors, (62), 9 states have call predecessors, (62), 16 states have return successors, (63), 11 states have call predecessors, (63), 7 states have call successors, (63) [2022-07-21 05:19:58,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:19:58,001 INFO L93 Difference]: Finished difference Result 31019 states and 43711 transitions. [2022-07-21 05:19:58,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-07-21 05:19:58,002 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.366666666666667) internal successors, (281), 24 states have internal predecessors, (281), 7 states have call successors, (62), 9 states have call predecessors, (62), 16 states have return successors, (63), 11 states have call predecessors, (63), 7 states have call successors, (63) Word has length 361 [2022-07-21 05:19:58,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:19:58,086 INFO L225 Difference]: With dead ends: 31019 [2022-07-21 05:19:58,086 INFO L226 Difference]: Without dead ends: 26629 [2022-07-21 05:19:58,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 911 GetRequests, 779 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5329 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1608, Invalid=15948, Unknown=0, NotChecked=0, Total=17556 [2022-07-21 05:19:58,104 INFO L413 NwaCegarLoop]: 1636 mSDtfsCounter, 4161 mSDsluCounter, 22159 mSDsCounter, 0 mSdLazyCounter, 11644 mSolverCounterSat, 2288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4161 SdHoareTripleChecker+Valid, 23795 SdHoareTripleChecker+Invalid, 13932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2288 IncrementalHoareTripleChecker+Valid, 11644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:19:58,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4161 Valid, 23795 Invalid, 13932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2288 Valid, 11644 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-21 05:19:58,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26629 states. [2022-07-21 05:19:59,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26629 to 13739. [2022-07-21 05:19:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13739 states, 10521 states have (on average 1.2792510217659918) internal successors, (13459), 10721 states have internal predecessors, (13459), 2184 states have call successors, (2184), 935 states have call predecessors, (2184), 1033 states have return successors, (2364), 2082 states have call predecessors, (2364), 2184 states have call successors, (2364) [2022-07-21 05:19:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13739 states to 13739 states and 18007 transitions. [2022-07-21 05:19:59,267 INFO L78 Accepts]: Start accepts. Automaton has 13739 states and 18007 transitions. Word has length 361 [2022-07-21 05:19:59,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:19:59,267 INFO L495 AbstractCegarLoop]: Abstraction has 13739 states and 18007 transitions. [2022-07-21 05:19:59,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.366666666666667) internal successors, (281), 24 states have internal predecessors, (281), 7 states have call successors, (62), 9 states have call predecessors, (62), 16 states have return successors, (63), 11 states have call predecessors, (63), 7 states have call successors, (63) [2022-07-21 05:19:59,268 INFO L276 IsEmpty]: Start isEmpty. Operand 13739 states and 18007 transitions. [2022-07-21 05:19:59,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-07-21 05:19:59,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:19:59,284 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:19:59,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 05:19:59,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-21 05:19:59,500 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:19:59,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:19:59,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1287975448, now seen corresponding path program 1 times [2022-07-21 05:19:59,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:19:59,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175595239] [2022-07-21 05:19:59,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:59,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:19:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:19:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:19:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:19:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:19:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:19:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:19:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:19:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:19:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:19:59,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:19:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:19:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:19:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:19:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:19:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:19:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:19:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:19:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:19:59,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:19:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:19:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:19:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 05:19:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-07-21 05:19:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-21 05:19:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2022-07-21 05:19:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-21 05:19:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-21 05:19:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2022-07-21 05:19:59,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2022-07-21 05:19:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-21 05:19:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-21 05:19:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2022-07-21 05:19:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 58 proven. 10 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked. [2022-07-21 05:19:59,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:19:59,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175595239] [2022-07-21 05:19:59,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175595239] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:19:59,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270316735] [2022-07-21 05:19:59,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:19:59,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:19:59,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:19:59,612 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:19:59,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 05:19:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:19:59,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1271 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 05:19:59,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:19:59,818 INFO L134 CoverageAnalysis]: Checked inductivity of 892 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2022-07-21 05:19:59,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:19:59,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270316735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:19:59,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:19:59,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-21 05:19:59,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677256574] [2022-07-21 05:19:59,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:19:59,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:19:59,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:19:59,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:19:59,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:19:59,821 INFO L87 Difference]: Start difference. First operand 13739 states and 18007 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 05:20:00,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:00,718 INFO L93 Difference]: Finished difference Result 27737 states and 36363 transitions. [2022-07-21 05:20:00,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:20:00,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 361 [2022-07-21 05:20:00,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:00,760 INFO L225 Difference]: With dead ends: 27737 [2022-07-21 05:20:00,760 INFO L226 Difference]: Without dead ends: 13371 [2022-07-21 05:20:00,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:20:00,783 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 40 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:00,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 690 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:20:00,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13371 states. [2022-07-21 05:20:01,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13371 to 13371. [2022-07-21 05:20:01,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13371 states, 10249 states have (on average 1.246267928578398) internal successors, (12773), 10441 states have internal predecessors, (12773), 2184 states have call successors, (2184), 935 states have call predecessors, (2184), 937 states have return successors, (2188), 1994 states have call predecessors, (2188), 2184 states have call successors, (2188) [2022-07-21 05:20:01,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13371 states to 13371 states and 17145 transitions. [2022-07-21 05:20:01,711 INFO L78 Accepts]: Start accepts. Automaton has 13371 states and 17145 transitions. Word has length 361 [2022-07-21 05:20:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:01,711 INFO L495 AbstractCegarLoop]: Abstraction has 13371 states and 17145 transitions. [2022-07-21 05:20:01,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 05:20:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 13371 states and 17145 transitions. [2022-07-21 05:20:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2022-07-21 05:20:01,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:01,728 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:01,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:01,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:01,943 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:01,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:01,944 INFO L85 PathProgramCache]: Analyzing trace with hash 643134971, now seen corresponding path program 1 times [2022-07-21 05:20:01,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:01,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872047392] [2022-07-21 05:20:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:01,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:20:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:01,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:20:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:20:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-21 05:20:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-21 05:20:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:01,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:20:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:20:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:20:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:01,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-21 05:20:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:20:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:20:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:20:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 05:20:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:20:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:20:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:20:02,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 05:20:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-21 05:20:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-21 05:20:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 05:20:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-21 05:20:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-21 05:20:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-21 05:20:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-07-21 05:20:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2022-07-21 05:20:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-21 05:20:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2022-07-21 05:20:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2022-07-21 05:20:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-07-21 05:20:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-21 05:20:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2022-07-21 05:20:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2022-07-21 05:20:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2022-07-21 05:20:02,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2022-07-21 05:20:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 816 trivial. 0 not checked. [2022-07-21 05:20:02,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:02,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872047392] [2022-07-21 05:20:02,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872047392] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:02,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546263213] [2022-07-21 05:20:02,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:02,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:02,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:02,046 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:02,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 05:20:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:02,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 05:20:02,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:02,249 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2022-07-21 05:20:02,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:20:02,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546263213] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:20:02,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:20:02,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-21 05:20:02,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035021830] [2022-07-21 05:20:02,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:02,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:20:02,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:02,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:20:02,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:20:02,251 INFO L87 Difference]: Start difference. First operand 13371 states and 17145 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 05:20:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:03,047 INFO L93 Difference]: Finished difference Result 26281 states and 33769 transitions. [2022-07-21 05:20:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:20:03,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 374 [2022-07-21 05:20:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:03,084 INFO L225 Difference]: With dead ends: 26281 [2022-07-21 05:20:03,085 INFO L226 Difference]: Without dead ends: 12911 [2022-07-21 05:20:03,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:20:03,104 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 28 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:03,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 697 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:20:03,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12911 states. [2022-07-21 05:20:03,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12911 to 12911. [2022-07-21 05:20:03,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12911 states, 9871 states have (on average 1.2500253267146186) internal successors, (12339), 10063 states have internal predecessors, (12339), 2139 states have call successors, (2139), 900 states have call predecessors, (2139), 900 states have return successors, (2139), 1947 states have call predecessors, (2139), 2139 states have call successors, (2139) [2022-07-21 05:20:03,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12911 states to 12911 states and 16617 transitions. [2022-07-21 05:20:03,982 INFO L78 Accepts]: Start accepts. Automaton has 12911 states and 16617 transitions. Word has length 374 [2022-07-21 05:20:03,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:03,982 INFO L495 AbstractCegarLoop]: Abstraction has 12911 states and 16617 transitions. [2022-07-21 05:20:03,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 05:20:03,982 INFO L276 IsEmpty]: Start isEmpty. Operand 12911 states and 16617 transitions. [2022-07-21 05:20:03,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2022-07-21 05:20:03,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:03,998 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:04,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-07-21 05:20:04,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-07-21 05:20:04,212 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1882613256, now seen corresponding path program 1 times [2022-07-21 05:20:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:04,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684670998] [2022-07-21 05:20:04,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:04,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:04,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:20:04,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:20:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:20:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:20:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:20:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:20:04,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:20:04,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:20:04,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:20:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:20:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:20:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:20:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:20:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:20:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:20:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:20:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:20:04,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:20:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:20:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 05:20:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 05:20:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:20:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2022-07-21 05:20:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-07-21 05:20:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-21 05:20:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2022-07-21 05:20:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-21 05:20:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2022-07-21 05:20:04,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-07-21 05:20:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2022-07-21 05:20:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-21 05:20:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2022-07-21 05:20:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2022-07-21 05:20:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2022-07-21 05:20:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 366 [2022-07-21 05:20:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 52 proven. 55 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2022-07-21 05:20:04,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:04,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684670998] [2022-07-21 05:20:04,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684670998] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:04,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422161342] [2022-07-21 05:20:04,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:04,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:04,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:04,479 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:04,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 05:20:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:04,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-21 05:20:04,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 274 proven. 269 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2022-07-21 05:20:05,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 996 trivial. 0 not checked. [2022-07-21 05:20:05,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422161342] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:05,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 05:20:05,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 18] total 32 [2022-07-21 05:20:05,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068061601] [2022-07-21 05:20:05,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:05,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:20:05,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:05,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:20:05,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-07-21 05:20:05,316 INFO L87 Difference]: Start difference. First operand 12911 states and 16617 transitions. Second operand has 5 states, 4 states have (on average 28.75) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-21 05:20:06,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:06,127 INFO L93 Difference]: Finished difference Result 23532 states and 30378 transitions. [2022-07-21 05:20:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:20:06,127 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.75) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 381 [2022-07-21 05:20:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:06,155 INFO L225 Difference]: With dead ends: 23532 [2022-07-21 05:20:06,156 INFO L226 Difference]: Without dead ends: 11519 [2022-07-21 05:20:06,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 844 GetRequests, 814 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=918, Unknown=0, NotChecked=0, Total=992 [2022-07-21 05:20:06,176 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 2 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:06,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 740 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:20:06,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11519 states. [2022-07-21 05:20:06,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11519 to 11519. [2022-07-21 05:20:06,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11519 states, 8810 states have (on average 1.2490351872871737) internal successors, (11004), 8984 states have internal predecessors, (11004), 1903 states have call successors, (1903), 805 states have call predecessors, (1903), 805 states have return successors, (1903), 1729 states have call predecessors, (1903), 1903 states have call successors, (1903) [2022-07-21 05:20:06,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11519 states to 11519 states and 14810 transitions. [2022-07-21 05:20:06,943 INFO L78 Accepts]: Start accepts. Automaton has 11519 states and 14810 transitions. Word has length 381 [2022-07-21 05:20:06,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:06,943 INFO L495 AbstractCegarLoop]: Abstraction has 11519 states and 14810 transitions. [2022-07-21 05:20:06,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.75) internal successors, (115), 5 states have internal predecessors, (115), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-21 05:20:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 11519 states and 14810 transitions. [2022-07-21 05:20:06,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-07-21 05:20:06,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:06,958 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:06,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:07,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-07-21 05:20:07,159 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1983640200, now seen corresponding path program 1 times [2022-07-21 05:20:07,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:07,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770683676] [2022-07-21 05:20:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:07,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:20:07,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:20:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:20:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:20:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:20:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:20:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:20:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:20:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:20:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:20:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:20:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:20:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:20:07,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:20:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:20:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:20:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:20:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:20:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-21 05:20:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-21 05:20:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-21 05:20:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-21 05:20:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-21 05:20:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-07-21 05:20:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-21 05:20:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-21 05:20:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-07-21 05:20:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-07-21 05:20:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-07-21 05:20:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-07-21 05:20:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-07-21 05:20:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-07-21 05:20:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-21 05:20:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-07-21 05:20:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-07-21 05:20:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-07-21 05:20:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-07-21 05:20:07,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1036 trivial. 0 not checked. [2022-07-21 05:20:07,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:07,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770683676] [2022-07-21 05:20:07,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770683676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:20:07,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:20:07,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:20:07,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864456707] [2022-07-21 05:20:07,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:20:07,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:20:07,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:07,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:20:07,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:20:07,286 INFO L87 Difference]: Start difference. First operand 11519 states and 14810 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 5 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-21 05:20:08,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:08,219 INFO L93 Difference]: Finished difference Result 22968 states and 29480 transitions. [2022-07-21 05:20:08,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:20:08,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 5 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 389 [2022-07-21 05:20:08,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:08,248 INFO L225 Difference]: With dead ends: 22968 [2022-07-21 05:20:08,248 INFO L226 Difference]: Without dead ends: 11912 [2022-07-21 05:20:08,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:20:08,266 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 369 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:08,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 504 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:20:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11912 states. [2022-07-21 05:20:08,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11912 to 6296. [2022-07-21 05:20:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6296 states, 4810 states have (on average 1.2291060291060292) internal successors, (5912), 4914 states have internal predecessors, (5912), 1045 states have call successors, (1045), 440 states have call predecessors, (1045), 440 states have return successors, (1045), 941 states have call predecessors, (1045), 1045 states have call successors, (1045) [2022-07-21 05:20:08,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6296 states to 6296 states and 8002 transitions. [2022-07-21 05:20:08,876 INFO L78 Accepts]: Start accepts. Automaton has 6296 states and 8002 transitions. Word has length 389 [2022-07-21 05:20:08,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:08,876 INFO L495 AbstractCegarLoop]: Abstraction has 6296 states and 8002 transitions. [2022-07-21 05:20:08,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 5 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-21 05:20:08,876 INFO L276 IsEmpty]: Start isEmpty. Operand 6296 states and 8002 transitions. [2022-07-21 05:20:08,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-07-21 05:20:08,884 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:08,884 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:08,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-21 05:20:08,885 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:08,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:08,885 INFO L85 PathProgramCache]: Analyzing trace with hash -498617400, now seen corresponding path program 1 times [2022-07-21 05:20:08,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:08,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516780178] [2022-07-21 05:20:08,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:08,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:20:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:20:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:20:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:20:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:20:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:20:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:20:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:20:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:20:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:20:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:20:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:20:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:20:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:20:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:20:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:20:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:20:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:20:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-21 05:20:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-07-21 05:20:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-21 05:20:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-21 05:20:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-21 05:20:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-07-21 05:20:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2022-07-21 05:20:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2022-07-21 05:20:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2022-07-21 05:20:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2022-07-21 05:20:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2022-07-21 05:20:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2022-07-21 05:20:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2022-07-21 05:20:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2022-07-21 05:20:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2022-07-21 05:20:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2022-07-21 05:20:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2022-07-21 05:20:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2022-07-21 05:20:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2022-07-21 05:20:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-07-21 05:20:09,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:09,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516780178] [2022-07-21 05:20:09,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516780178] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:09,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236184079] [2022-07-21 05:20:09,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:09,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:09,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:09,088 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:09,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 05:20:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:09,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 66 conjunts are in the unsatisfiable core [2022-07-21 05:20:09,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 480 proven. 217 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-21 05:20:10,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 112 proven. 189 refuted. 0 times theorem prover too weak. 743 trivial. 0 not checked. [2022-07-21 05:20:11,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236184079] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:11,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:11,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27, 21] total 56 [2022-07-21 05:20:11,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111090133] [2022-07-21 05:20:11,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:11,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-21 05:20:11,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:11,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-21 05:20:11,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2866, Unknown=0, NotChecked=0, Total=3080 [2022-07-21 05:20:11,324 INFO L87 Difference]: Start difference. First operand 6296 states and 8002 transitions. Second operand has 56 states, 56 states have (on average 6.910714285714286) internal successors, (387), 48 states have internal predecessors, (387), 18 states have call successors, (83), 14 states have call predecessors, (83), 21 states have return successors, (85), 22 states have call predecessors, (85), 18 states have call successors, (85) [2022-07-21 05:20:41,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:20:41,783 INFO L93 Difference]: Finished difference Result 35785 states and 49882 transitions. [2022-07-21 05:20:41,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2022-07-21 05:20:41,783 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 6.910714285714286) internal successors, (387), 48 states have internal predecessors, (387), 18 states have call successors, (83), 14 states have call predecessors, (83), 21 states have return successors, (85), 22 states have call predecessors, (85), 18 states have call successors, (85) Word has length 389 [2022-07-21 05:20:41,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:20:41,846 INFO L225 Difference]: With dead ends: 35785 [2022-07-21 05:20:41,846 INFO L226 Difference]: Without dead ends: 29999 [2022-07-21 05:20:41,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 831 SyntacticMatches, 0 SemanticMatches, 372 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53692 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=7961, Invalid=131541, Unknown=0, NotChecked=0, Total=139502 [2022-07-21 05:20:41,870 INFO L413 NwaCegarLoop]: 1254 mSDtfsCounter, 5165 mSDsluCounter, 27725 mSDsCounter, 0 mSdLazyCounter, 33433 mSolverCounterSat, 4071 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5183 SdHoareTripleChecker+Valid, 28979 SdHoareTripleChecker+Invalid, 37504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4071 IncrementalHoareTripleChecker+Valid, 33433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-07-21 05:20:41,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5183 Valid, 28979 Invalid, 37504 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4071 Valid, 33433 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2022-07-21 05:20:41,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29999 states. [2022-07-21 05:20:43,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29999 to 10312. [2022-07-21 05:20:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10312 states, 7899 states have (on average 1.2245853905557667) internal successors, (9673), 8082 states have internal predecessors, (9673), 1654 states have call successors, (1654), 758 states have call predecessors, (1654), 758 states have return successors, (1654), 1471 states have call predecessors, (1654), 1654 states have call successors, (1654) [2022-07-21 05:20:43,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10312 states to 10312 states and 12981 transitions. [2022-07-21 05:20:43,225 INFO L78 Accepts]: Start accepts. Automaton has 10312 states and 12981 transitions. Word has length 389 [2022-07-21 05:20:43,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:20:43,225 INFO L495 AbstractCegarLoop]: Abstraction has 10312 states and 12981 transitions. [2022-07-21 05:20:43,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 6.910714285714286) internal successors, (387), 48 states have internal predecessors, (387), 18 states have call successors, (83), 14 states have call predecessors, (83), 21 states have return successors, (85), 22 states have call predecessors, (85), 18 states have call successors, (85) [2022-07-21 05:20:43,226 INFO L276 IsEmpty]: Start isEmpty. Operand 10312 states and 12981 transitions. [2022-07-21 05:20:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2022-07-21 05:20:43,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:20:43,239 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:20:43,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 05:20:43,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:43,448 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:20:43,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:20:43,448 INFO L85 PathProgramCache]: Analyzing trace with hash 649695719, now seen corresponding path program 1 times [2022-07-21 05:20:43,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:20:43,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297529968] [2022-07-21 05:20:43,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:43,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:20:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:20:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:20:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:20:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:20:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:20:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:20:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:20:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:20:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:20:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:20:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:20:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:20:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:20:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:20:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:20:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:20:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:20:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:20:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:20:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-21 05:20:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-21 05:20:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:20:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-21 05:20:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-21 05:20:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-21 05:20:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-21 05:20:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-21 05:20:43,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2022-07-21 05:20:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2022-07-21 05:20:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2022-07-21 05:20:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2022-07-21 05:20:43,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2022-07-21 05:20:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-07-21 05:20:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2022-07-21 05:20:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2022-07-21 05:20:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2022-07-21 05:20:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-07-21 05:20:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-07-21 05:20:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2022-07-21 05:20:43,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:20:43,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297529968] [2022-07-21 05:20:43,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297529968] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:20:43,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499233132] [2022-07-21 05:20:43,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:20:43,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:20:43,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:20:43,712 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:20:43,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 05:20:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:20:43,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1393 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-21 05:20:43,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:20:44,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 573 proven. 261 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-07-21 05:20:44,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:20:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 157 proven. 154 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked. [2022-07-21 05:20:45,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499233132] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:20:45,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:20:45,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27, 21] total 58 [2022-07-21 05:20:45,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846929160] [2022-07-21 05:20:45,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:20:45,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-07-21 05:20:45,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:20:45,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-07-21 05:20:45,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3082, Unknown=0, NotChecked=0, Total=3306 [2022-07-21 05:20:45,949 INFO L87 Difference]: Start difference. First operand 10312 states and 12981 transitions. Second operand has 58 states, 58 states have (on average 7.0344827586206895) internal successors, (408), 50 states have internal predecessors, (408), 19 states have call successors, (85), 12 states have call predecessors, (85), 22 states have return successors, (89), 26 states have call predecessors, (89), 19 states have call successors, (89) [2022-07-21 05:21:26,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:26,752 INFO L93 Difference]: Finished difference Result 83618 states and 118794 transitions. [2022-07-21 05:21:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 270 states. [2022-07-21 05:21:26,753 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 7.0344827586206895) internal successors, (408), 50 states have internal predecessors, (408), 19 states have call successors, (85), 12 states have call predecessors, (85), 22 states have return successors, (89), 26 states have call predecessors, (89), 19 states have call successors, (89) Word has length 401 [2022-07-21 05:21:26,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:26,980 INFO L225 Difference]: With dead ends: 83618 [2022-07-21 05:21:26,980 INFO L226 Difference]: Without dead ends: 73991 [2022-07-21 05:21:27,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 852 SyntacticMatches, 1 SemanticMatches, 323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38531 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=6939, Invalid=98361, Unknown=0, NotChecked=0, Total=105300 [2022-07-21 05:21:27,021 INFO L413 NwaCegarLoop]: 1469 mSDtfsCounter, 3725 mSDsluCounter, 31463 mSDsCounter, 0 mSdLazyCounter, 38686 mSolverCounterSat, 3461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3744 SdHoareTripleChecker+Valid, 32932 SdHoareTripleChecker+Invalid, 42147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3461 IncrementalHoareTripleChecker+Valid, 38686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:27,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3744 Valid, 32932 Invalid, 42147 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3461 Valid, 38686 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2022-07-21 05:21:27,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73991 states. [2022-07-21 05:21:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73991 to 13059. [2022-07-21 05:21:29,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13059 states, 10030 states have (on average 1.2182452642073778) internal successors, (12219), 10284 states have internal predecessors, (12219), 2026 states have call successors, (2026), 1002 states have call predecessors, (2026), 1002 states have return successors, (2026), 1772 states have call predecessors, (2026), 2026 states have call successors, (2026) [2022-07-21 05:21:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13059 states to 13059 states and 16271 transitions. [2022-07-21 05:21:29,800 INFO L78 Accepts]: Start accepts. Automaton has 13059 states and 16271 transitions. Word has length 401 [2022-07-21 05:21:29,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:29,801 INFO L495 AbstractCegarLoop]: Abstraction has 13059 states and 16271 transitions. [2022-07-21 05:21:29,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 7.0344827586206895) internal successors, (408), 50 states have internal predecessors, (408), 19 states have call successors, (85), 12 states have call predecessors, (85), 22 states have return successors, (89), 26 states have call predecessors, (89), 19 states have call successors, (89) [2022-07-21 05:21:29,801 INFO L276 IsEmpty]: Start isEmpty. Operand 13059 states and 16271 transitions. [2022-07-21 05:21:29,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-07-21 05:21:29,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:29,817 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:21:29,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-21 05:21:30,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:30,018 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1134196924, now seen corresponding path program 1 times [2022-07-21 05:21:30,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:30,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292652563] [2022-07-21 05:21:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:30,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:21:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:21:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:21:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:21:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:21:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:21:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:21:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:21:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:21:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:21:30,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:21:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:21:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:21:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:21:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:21:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:21:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:21:30,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:21:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:21:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-21 05:21:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-07-21 05:21:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:21:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-21 05:21:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-21 05:21:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-21 05:21:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-21 05:21:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-21 05:21:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-21 05:21:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-07-21 05:21:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-07-21 05:21:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-21 05:21:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-21 05:21:30,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-07-21 05:21:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-07-21 05:21:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-07-21 05:21:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-07-21 05:21:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-07-21 05:21:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-07-21 05:21:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2022-07-21 05:21:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2022-07-21 05:21:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2022-07-21 05:21:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1217 trivial. 0 not checked. [2022-07-21 05:21:30,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:30,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292652563] [2022-07-21 05:21:30,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292652563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:21:30,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:21:30,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:21:30,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768279341] [2022-07-21 05:21:30,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:21:30,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:21:30,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:30,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:21:30,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:21:30,162 INFO L87 Difference]: Start difference. First operand 13059 states and 16271 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 5 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2022-07-21 05:21:32,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:32,290 INFO L93 Difference]: Finished difference Result 25682 states and 32025 transitions. [2022-07-21 05:21:32,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:21:32,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 5 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 427 [2022-07-21 05:21:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:32,317 INFO L225 Difference]: With dead ends: 25682 [2022-07-21 05:21:32,318 INFO L226 Difference]: Without dead ends: 13122 [2022-07-21 05:21:32,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:21:32,334 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 282 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:32,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 460 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:21:32,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13122 states. [2022-07-21 05:21:33,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13122 to 7580. [2022-07-21 05:21:33,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7580 states, 5925 states have (on average 1.210632911392405) internal successors, (7173), 6035 states have internal predecessors, (7173), 1089 states have call successors, (1089), 565 states have call predecessors, (1089), 565 states have return successors, (1089), 979 states have call predecessors, (1089), 1089 states have call successors, (1089) [2022-07-21 05:21:33,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7580 states to 7580 states and 9351 transitions. [2022-07-21 05:21:33,890 INFO L78 Accepts]: Start accepts. Automaton has 7580 states and 9351 transitions. Word has length 427 [2022-07-21 05:21:33,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:33,891 INFO L495 AbstractCegarLoop]: Abstraction has 7580 states and 9351 transitions. [2022-07-21 05:21:33,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 5 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2022-07-21 05:21:33,891 INFO L276 IsEmpty]: Start isEmpty. Operand 7580 states and 9351 transitions. [2022-07-21 05:21:33,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-07-21 05:21:33,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:33,901 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 05:21:33,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-21 05:21:33,901 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:33,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash -331001835, now seen corresponding path program 1 times [2022-07-21 05:21:33,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:33,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218154096] [2022-07-21 05:21:33,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:33,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:21:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:21:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:21:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:21:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:21:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:21:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:21:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:21:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:21:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:21:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:21:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:21:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:21:33,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:21:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:21:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:21:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:33,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:21:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:21:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-21 05:21:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-21 05:21:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-21 05:21:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:21:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-21 05:21:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-21 05:21:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-21 05:21:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-21 05:21:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-21 05:21:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-21 05:21:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-07-21 05:21:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-07-21 05:21:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-21 05:21:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-21 05:21:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-07-21 05:21:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-07-21 05:21:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-07-21 05:21:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-07-21 05:21:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-07-21 05:21:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-07-21 05:21:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-07-21 05:21:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-07-21 05:21:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-07-21 05:21:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1226 trivial. 0 not checked. [2022-07-21 05:21:34,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:34,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218154096] [2022-07-21 05:21:34,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218154096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:21:34,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:21:34,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:21:34,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099003800] [2022-07-21 05:21:34,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:21:34,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:21:34,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:34,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:21:34,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:21:34,040 INFO L87 Difference]: Start difference. First operand 7580 states and 9351 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 5 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-21 05:21:35,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:21:35,981 INFO L93 Difference]: Finished difference Result 14618 states and 18125 transitions. [2022-07-21 05:21:35,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:21:35,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 5 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 427 [2022-07-21 05:21:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:21:35,995 INFO L225 Difference]: With dead ends: 14618 [2022-07-21 05:21:35,995 INFO L226 Difference]: Without dead ends: 7628 [2022-07-21 05:21:36,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 05:21:36,002 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 279 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:21:36,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 507 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:21:36,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7628 states. [2022-07-21 05:21:37,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7628 to 7622. [2022-07-21 05:21:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7622 states, 5931 states have (on average 1.210419828022256) internal successors, (7179), 6071 states have internal predecessors, (7179), 1125 states have call successors, (1125), 565 states have call predecessors, (1125), 565 states have return successors, (1125), 985 states have call predecessors, (1125), 1125 states have call successors, (1125) [2022-07-21 05:21:37,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7622 states to 7622 states and 9429 transitions. [2022-07-21 05:21:37,505 INFO L78 Accepts]: Start accepts. Automaton has 7622 states and 9429 transitions. Word has length 427 [2022-07-21 05:21:37,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:21:37,505 INFO L495 AbstractCegarLoop]: Abstraction has 7622 states and 9429 transitions. [2022-07-21 05:21:37,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 5 states have internal predecessors, (122), 5 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2022-07-21 05:21:37,506 INFO L276 IsEmpty]: Start isEmpty. Operand 7622 states and 9429 transitions. [2022-07-21 05:21:37,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2022-07-21 05:21:37,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:21:37,516 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 05:21:37,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-21 05:21:37,516 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:21:37,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:21:37,517 INFO L85 PathProgramCache]: Analyzing trace with hash -576809709, now seen corresponding path program 1 times [2022-07-21 05:21:37,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:21:37,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865582515] [2022-07-21 05:21:37,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:37,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:21:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:21:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:21:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:21:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:21:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:21:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:21:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:21:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:21:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:21:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:21:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:21:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:21:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:21:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:21:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:21:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:21:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:21:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:21:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-21 05:21:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-21 05:21:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-21 05:21:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2022-07-21 05:21:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-07-21 05:21:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2022-07-21 05:21:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-21 05:21:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2022-07-21 05:21:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-21 05:21:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2022-07-21 05:21:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2022-07-21 05:21:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2022-07-21 05:21:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2022-07-21 05:21:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2022-07-21 05:21:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2022-07-21 05:21:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2022-07-21 05:21:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2022-07-21 05:21:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2022-07-21 05:21:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2022-07-21 05:21:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2022-07-21 05:21:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-07-21 05:21:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2022-07-21 05:21:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-07-21 05:21:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2022-07-21 05:21:37,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:21:37,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865582515] [2022-07-21 05:21:37,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865582515] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:21:37,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056704933] [2022-07-21 05:21:37,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:21:37,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:21:37,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:21:37,712 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:21:37,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 05:21:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:21:37,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-21 05:21:37,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:21:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 438 proven. 148 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2022-07-21 05:21:38,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:21:39,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1234 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2022-07-21 05:21:39,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056704933] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:21:39,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:21:39,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 38 [2022-07-21 05:21:39,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249116238] [2022-07-21 05:21:39,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:21:39,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-07-21 05:21:39,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:21:39,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-07-21 05:21:39,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1236, Unknown=0, NotChecked=0, Total=1406 [2022-07-21 05:21:39,073 INFO L87 Difference]: Start difference. First operand 7622 states and 9429 transitions. Second operand has 38 states, 36 states have (on average 9.833333333333334) internal successors, (354), 35 states have internal predecessors, (354), 16 states have call successors, (80), 7 states have call predecessors, (80), 11 states have return successors, (75), 16 states have call predecessors, (75), 16 states have call successors, (75) [2022-07-21 05:22:40,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:22:40,238 INFO L93 Difference]: Finished difference Result 80489 states and 110009 transitions. [2022-07-21 05:22:40,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 663 states. [2022-07-21 05:22:40,239 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 9.833333333333334) internal successors, (354), 35 states have internal predecessors, (354), 16 states have call successors, (80), 7 states have call predecessors, (80), 11 states have return successors, (75), 16 states have call predecessors, (75), 16 states have call successors, (75) Word has length 427 [2022-07-21 05:22:40,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:22:40,428 INFO L225 Difference]: With dead ends: 80489 [2022-07-21 05:22:40,429 INFO L226 Difference]: Without dead ends: 73683 [2022-07-21 05:22:40,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1660 GetRequests, 965 SyntacticMatches, 5 SemanticMatches, 690 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217760 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=42310, Invalid=435862, Unknown=0, NotChecked=0, Total=478172 [2022-07-21 05:22:40,478 INFO L413 NwaCegarLoop]: 1858 mSDtfsCounter, 5956 mSDsluCounter, 25899 mSDsCounter, 0 mSdLazyCounter, 42339 mSolverCounterSat, 9814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5978 SdHoareTripleChecker+Valid, 27757 SdHoareTripleChecker+Invalid, 52153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 9814 IncrementalHoareTripleChecker+Valid, 42339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2022-07-21 05:22:40,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5978 Valid, 27757 Invalid, 52153 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [9814 Valid, 42339 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time] [2022-07-21 05:22:40,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73683 states. [2022-07-21 05:22:43,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73683 to 9532. [2022-07-21 05:22:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9532 states, 7382 states have (on average 1.2138986724464915) internal successors, (8961), 7588 states have internal predecessors, (8961), 1447 states have call successors, (1447), 702 states have call predecessors, (1447), 702 states have return successors, (1447), 1241 states have call predecessors, (1447), 1447 states have call successors, (1447) [2022-07-21 05:22:43,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9532 states to 9532 states and 11855 transitions. [2022-07-21 05:22:43,554 INFO L78 Accepts]: Start accepts. Automaton has 9532 states and 11855 transitions. Word has length 427 [2022-07-21 05:22:43,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:22:43,555 INFO L495 AbstractCegarLoop]: Abstraction has 9532 states and 11855 transitions. [2022-07-21 05:22:43,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 9.833333333333334) internal successors, (354), 35 states have internal predecessors, (354), 16 states have call successors, (80), 7 states have call predecessors, (80), 11 states have return successors, (75), 16 states have call predecessors, (75), 16 states have call successors, (75) [2022-07-21 05:22:43,555 INFO L276 IsEmpty]: Start isEmpty. Operand 9532 states and 11855 transitions. [2022-07-21 05:22:43,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-07-21 05:22:43,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:22:43,584 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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 05:22:43,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-21 05:22:43,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:22:43,804 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:22:43,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:22:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash -835368998, now seen corresponding path program 1 times [2022-07-21 05:22:43,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:22:43,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330079166] [2022-07-21 05:22:43,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:43,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:22:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:43,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 05:22:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:22:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:43,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:22:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:43,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 05:22:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:43,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 05:22:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:43,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:22:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:43,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 05:22:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:43,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 05:22:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:43,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 05:22:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:43,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:22:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:22:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:22:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 05:22:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 05:22:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 05:22:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:22:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 05:22:44,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-21 05:22:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 05:22:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-21 05:22:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-21 05:22:44,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2022-07-21 05:22:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2022-07-21 05:22:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-21 05:22:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2022-07-21 05:22:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2022-07-21 05:22:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2022-07-21 05:22:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2022-07-21 05:22:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2022-07-21 05:22:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2022-07-21 05:22:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2022-07-21 05:22:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2022-07-21 05:22:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2022-07-21 05:22:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2022-07-21 05:22:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2022-07-21 05:22:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2022-07-21 05:22:44,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2022-07-21 05:22:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2022-07-21 05:22:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 396 [2022-07-21 05:22:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2022-07-21 05:22:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 413 [2022-07-21 05:22:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2022-07-21 05:22:44,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:22:44,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330079166] [2022-07-21 05:22:44,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330079166] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:22:44,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314821219] [2022-07-21 05:22:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:22:44,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:22:44,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:22:44,081 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 05:22:44,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-21 05:22:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:22:44,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-21 05:22:44,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:22:45,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 471 proven. 107 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2022-07-21 05:22:45,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:22:45,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 22 proven. 25 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2022-07-21 05:22:45,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314821219] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:22:45,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:22:45,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 43 [2022-07-21 05:22:45,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749957633] [2022-07-21 05:22:45,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:22:45,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-21 05:22:45,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:22:45,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-21 05:22:45,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1585, Unknown=0, NotChecked=0, Total=1806 [2022-07-21 05:22:45,509 INFO L87 Difference]: Start difference. First operand 9532 states and 11855 transitions. Second operand has 43 states, 41 states have (on average 9.878048780487806) internal successors, (405), 40 states have internal predecessors, (405), 19 states have call successors, (90), 7 states have call predecessors, (90), 11 states have return successors, (90), 19 states have call predecessors, (90), 19 states have call successors, (90)