./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.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 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 11:04:43,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 11:04:43,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 11:04:43,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 11:04:43,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 11:04:43,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 11:04:43,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 11:04:43,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 11:04:43,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 11:04:43,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 11:04:43,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 11:04:43,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 11:04:43,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 11:04:43,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 11:04:43,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 11:04:43,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 11:04:43,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 11:04:43,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 11:04:43,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 11:04:43,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 11:04:43,461 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 11:04:43,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 11:04:43,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 11:04:43,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 11:04:43,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 11:04:43,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 11:04:43,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 11:04:43,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 11:04:43,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 11:04:43,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 11:04:43,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 11:04:43,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 11:04:43,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 11:04:43,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 11:04:43,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 11:04:43,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 11:04:43,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 11:04:43,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 11:04:43,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 11:04:43,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 11:04:43,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 11:04:43,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 11:04:43,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 11:04:43,504 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 11:04:43,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 11:04:43,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 11:04:43,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 11:04:43,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 11:04:43,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 11:04:43,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 11:04:43,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 11:04:43,507 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 11:04:43,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 11:04:43,508 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 11:04:43,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 11:04:43,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 11:04:43,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 11:04:43,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 11:04:43,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 11:04:43,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 11:04:43,510 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 11:04:43,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 11:04:43,511 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 11:04:43,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 11:04:43,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 11:04:43,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 11:04:43,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 11:04:43,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:04:43,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 11:04:43,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 11:04:43,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 11:04:43,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 11:04:43,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 11:04:43,513 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 11:04:43,514 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 11:04:43,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 11:04:43,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 [2022-07-19 11:04:43,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 11:04:43,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 11:04:43,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 11:04:43,761 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 11:04:43,761 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 11:04:43,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2022-07-19 11:04:43,829 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3014e0ad/fcbbc6f6d81747cfb132b84bed77bb0a/FLAG52c7654f3 [2022-07-19 11:04:44,335 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 11:04:44,335 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2022-07-19 11:04:44,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3014e0ad/fcbbc6f6d81747cfb132b84bed77bb0a/FLAG52c7654f3 [2022-07-19 11:04:44,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3014e0ad/fcbbc6f6d81747cfb132b84bed77bb0a [2022-07-19 11:04:44,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 11:04:44,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 11:04:44,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 11:04:44,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 11:04:44,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 11:04:44,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:04:44" (1/1) ... [2022-07-19 11:04:44,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@acf7492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:44, skipping insertion in model container [2022-07-19 11:04:44,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:04:44" (1/1) ... [2022-07-19 11:04:44,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 11:04:44,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 11:04:45,274 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/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2022-07-19 11:04:45,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:04:45,317 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 11:04:45,449 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/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2022-07-19 11:04:45,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 11:04:45,467 INFO L208 MainTranslator]: Completed translation [2022-07-19 11:04:45,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:45 WrapperNode [2022-07-19 11:04:45,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 11:04:45,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 11:04:45,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 11:04:45,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 11:04:45,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:45" (1/1) ... [2022-07-19 11:04:45,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:45" (1/1) ... [2022-07-19 11:04:45,551 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 798 [2022-07-19 11:04:45,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 11:04:45,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 11:04:45,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 11:04:45,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 11:04:45,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:45" (1/1) ... [2022-07-19 11:04:45,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:45" (1/1) ... [2022-07-19 11:04:45,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:45" (1/1) ... [2022-07-19 11:04:45,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:45" (1/1) ... [2022-07-19 11:04:45,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:45" (1/1) ... [2022-07-19 11:04:45,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:45" (1/1) ... [2022-07-19 11:04:45,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:45" (1/1) ... [2022-07-19 11:04:45,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 11:04:45,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 11:04:45,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 11:04:45,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 11:04:45,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:45" (1/1) ... [2022-07-19 11:04:45,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 11:04:45,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:04:45,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 11:04:45,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 11:04:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 11:04:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 11:04:45,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 11:04:45,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 11:04:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 11:04:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 11:04:45,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 11:04:45,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 11:04:45,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 11:04:45,949 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 11:04:45,950 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 11:04:45,987 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-19 11:04:48,251 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-19 11:04:48,251 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-19 11:04:48,252 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 11:04:48,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 11:04:48,263 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 11:04:48,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:04:48 BoogieIcfgContainer [2022-07-19 11:04:48,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 11:04:48,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 11:04:48,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 11:04:48,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 11:04:48,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:04:44" (1/3) ... [2022-07-19 11:04:48,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b04dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:04:48, skipping insertion in model container [2022-07-19 11:04:48,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:04:45" (2/3) ... [2022-07-19 11:04:48,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b04dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:04:48, skipping insertion in model container [2022-07-19 11:04:48,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:04:48" (3/3) ... [2022-07-19 11:04:48,273 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.12.i.cil-2.c [2022-07-19 11:04:48,285 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 11:04:48,286 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 11:04:48,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 11:04:48,358 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@f21c8e2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4f5c5213 [2022-07-19 11:04:48,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 11:04:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 151 states have (on average 1.7218543046357615) internal successors, (260), 152 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:48,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 11:04:48,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:48,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:48,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:48,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:48,376 INFO L85 PathProgramCache]: Analyzing trace with hash 918515972, now seen corresponding path program 1 times [2022-07-19 11:04:48,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:48,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183192567] [2022-07-19 11:04:48,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:48,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:48,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:48,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183192567] [2022-07-19 11:04:48,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183192567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:48,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:48,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:48,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193784377] [2022-07-19 11:04:48,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:48,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:48,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:48,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:48,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:48,856 INFO L87 Difference]: Start difference. First operand has 153 states, 151 states have (on average 1.7218543046357615) internal successors, (260), 152 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:50,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:04:51,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:51,140 INFO L93 Difference]: Finished difference Result 431 states and 736 transitions. [2022-07-19 11:04:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:51,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-07-19 11:04:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:51,160 INFO L225 Difference]: With dead ends: 431 [2022-07-19 11:04:51,160 INFO L226 Difference]: Without dead ends: 263 [2022-07-19 11:04:51,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:51,171 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 164 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:51,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 459 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 11:04:51,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-19 11:04:51,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 180. [2022-07-19 11:04:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.6145251396648044) internal successors, (289), 179 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 289 transitions. [2022-07-19 11:04:51,242 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 289 transitions. Word has length 44 [2022-07-19 11:04:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:51,261 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 289 transitions. [2022-07-19 11:04:51,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:51,262 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 289 transitions. [2022-07-19 11:04:51,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 11:04:51,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:51,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:51,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 11:04:51,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:51,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:51,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1831970075, now seen corresponding path program 1 times [2022-07-19 11:04:51,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:51,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490730062] [2022-07-19 11:04:51,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:51,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:51,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:51,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490730062] [2022-07-19 11:04:51,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490730062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:51,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:51,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:51,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775196442] [2022-07-19 11:04:51,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:51,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:51,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:51,426 INFO L87 Difference]: Start difference. First operand 180 states and 289 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:52,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:52,067 INFO L93 Difference]: Finished difference Result 378 states and 605 transitions. [2022-07-19 11:04:52,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:52,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-07-19 11:04:52,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:52,073 INFO L225 Difference]: With dead ends: 378 [2022-07-19 11:04:52,073 INFO L226 Difference]: Without dead ends: 208 [2022-07-19 11:04:52,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:52,075 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 22 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:52,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 487 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:04:52,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-19 11:04:52,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 191. [2022-07-19 11:04:52,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.6210526315789473) internal successors, (308), 190 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 308 transitions. [2022-07-19 11:04:52,085 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 308 transitions. Word has length 45 [2022-07-19 11:04:52,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:52,086 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 308 transitions. [2022-07-19 11:04:52,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:52,086 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 308 transitions. [2022-07-19 11:04:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 11:04:52,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:52,088 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:52,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 11:04:52,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:52,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:52,089 INFO L85 PathProgramCache]: Analyzing trace with hash 265450500, now seen corresponding path program 1 times [2022-07-19 11:04:52,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:52,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187753309] [2022-07-19 11:04:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:52,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:52,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:52,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187753309] [2022-07-19 11:04:52,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187753309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:52,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:52,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:52,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296641888] [2022-07-19 11:04:52,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:52,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:52,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:52,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:52,235 INFO L87 Difference]: Start difference. First operand 191 states and 308 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:53,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:53,055 INFO L93 Difference]: Finished difference Result 522 states and 847 transitions. [2022-07-19 11:04:53,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:53,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-19 11:04:53,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:53,061 INFO L225 Difference]: With dead ends: 522 [2022-07-19 11:04:53,061 INFO L226 Difference]: Without dead ends: 352 [2022-07-19 11:04:53,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:53,063 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 153 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:53,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 652 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:04:53,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-07-19 11:04:53,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 223. [2022-07-19 11:04:53,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.617117117117117) internal successors, (359), 222 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:53,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 359 transitions. [2022-07-19 11:04:53,074 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 359 transitions. Word has length 58 [2022-07-19 11:04:53,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:53,074 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 359 transitions. [2022-07-19 11:04:53,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:53,075 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 359 transitions. [2022-07-19 11:04:53,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 11:04:53,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:53,076 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:53,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 11:04:53,077 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:53,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1851609621, now seen corresponding path program 1 times [2022-07-19 11:04:53,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:53,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384805897] [2022-07-19 11:04:53,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:53,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:53,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:53,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:53,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:53,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384805897] [2022-07-19 11:04:53,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384805897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:53,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:53,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:53,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890461723] [2022-07-19 11:04:53,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:53,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:53,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:53,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:53,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:53,195 INFO L87 Difference]: Start difference. First operand 223 states and 359 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:53,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:53,937 INFO L93 Difference]: Finished difference Result 530 states and 850 transitions. [2022-07-19 11:04:53,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:53,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-19 11:04:53,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:53,939 INFO L225 Difference]: With dead ends: 530 [2022-07-19 11:04:53,939 INFO L226 Difference]: Without dead ends: 328 [2022-07-19 11:04:53,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:53,941 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 158 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:53,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 352 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 11:04:53,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-19 11:04:53,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 223. [2022-07-19 11:04:53,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.5990990990990992) internal successors, (355), 222 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:53,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 355 transitions. [2022-07-19 11:04:53,949 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 355 transitions. Word has length 59 [2022-07-19 11:04:53,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:53,949 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 355 transitions. [2022-07-19 11:04:53,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:53,950 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 355 transitions. [2022-07-19 11:04:53,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 11:04:53,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:53,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:53,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 11:04:53,952 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:53,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:53,952 INFO L85 PathProgramCache]: Analyzing trace with hash -556454231, now seen corresponding path program 1 times [2022-07-19 11:04:53,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:53,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110371008] [2022-07-19 11:04:53,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:53,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:54,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:54,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110371008] [2022-07-19 11:04:54,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110371008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:54,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:54,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:54,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012083886] [2022-07-19 11:04:54,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:54,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:54,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:54,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:54,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:54,115 INFO L87 Difference]: Start difference. First operand 223 states and 355 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:55,341 INFO L93 Difference]: Finished difference Result 441 states and 699 transitions. [2022-07-19 11:04:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:55,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-19 11:04:55,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:55,343 INFO L225 Difference]: With dead ends: 441 [2022-07-19 11:04:55,344 INFO L226 Difference]: Without dead ends: 239 [2022-07-19 11:04:55,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:55,345 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 26 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:55,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 491 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 11:04:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-19 11:04:55,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 223. [2022-07-19 11:04:55,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.5945945945945945) internal successors, (354), 222 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 354 transitions. [2022-07-19 11:04:55,352 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 354 transitions. Word has length 59 [2022-07-19 11:04:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:55,352 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 354 transitions. [2022-07-19 11:04:55,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:55,352 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 354 transitions. [2022-07-19 11:04:55,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 11:04:55,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:55,353 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:55,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 11:04:55,354 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:55,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:55,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1408571008, now seen corresponding path program 1 times [2022-07-19 11:04:55,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:55,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525343197] [2022-07-19 11:04:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:55,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:55,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:55,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525343197] [2022-07-19 11:04:55,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525343197] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:55,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:55,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:55,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348647175] [2022-07-19 11:04:55,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:55,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:55,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:55,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:55,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:55,500 INFO L87 Difference]: Start difference. First operand 223 states and 354 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:56,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:56,317 INFO L93 Difference]: Finished difference Result 440 states and 697 transitions. [2022-07-19 11:04:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:56,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-19 11:04:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:56,319 INFO L225 Difference]: With dead ends: 440 [2022-07-19 11:04:56,319 INFO L226 Difference]: Without dead ends: 238 [2022-07-19 11:04:56,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:56,321 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 19 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:56,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 493 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:04:56,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-07-19 11:04:56,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 223. [2022-07-19 11:04:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.59009009009009) internal successors, (353), 222 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 353 transitions. [2022-07-19 11:04:56,326 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 353 transitions. Word has length 59 [2022-07-19 11:04:56,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:56,327 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 353 transitions. [2022-07-19 11:04:56,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 353 transitions. [2022-07-19 11:04:56,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 11:04:56,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:56,331 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:04:56,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 11:04:56,332 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:56,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:56,332 INFO L85 PathProgramCache]: Analyzing trace with hash 883176000, now seen corresponding path program 1 times [2022-07-19 11:04:56,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:56,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911572370] [2022-07-19 11:04:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:56,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:56,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:56,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911572370] [2022-07-19 11:04:56,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911572370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:56,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:56,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:56,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165296564] [2022-07-19 11:04:56,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:56,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:56,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:56,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:56,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:56,468 INFO L87 Difference]: Start difference. First operand 223 states and 353 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:57,356 INFO L93 Difference]: Finished difference Result 530 states and 841 transitions. [2022-07-19 11:04:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:57,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-19 11:04:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:57,358 INFO L225 Difference]: With dead ends: 530 [2022-07-19 11:04:57,358 INFO L226 Difference]: Without dead ends: 328 [2022-07-19 11:04:57,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:57,360 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 151 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:57,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 352 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:04:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-19 11:04:57,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 224. [2022-07-19 11:04:57,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.5784753363228698) internal successors, (352), 223 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 352 transitions. [2022-07-19 11:04:57,366 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 352 transitions. Word has length 59 [2022-07-19 11:04:57,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:57,366 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 352 transitions. [2022-07-19 11:04:57,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:57,366 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 352 transitions. [2022-07-19 11:04:57,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 11:04:57,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:57,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:57,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 11:04:57,368 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:57,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:57,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1725722285, now seen corresponding path program 1 times [2022-07-19 11:04:57,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:57,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494059292] [2022-07-19 11:04:57,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:57,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:57,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494059292] [2022-07-19 11:04:57,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494059292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:57,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:57,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:57,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246224226] [2022-07-19 11:04:57,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:57,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:57,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:57,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:57,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:57,473 INFO L87 Difference]: Start difference. First operand 224 states and 352 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:58,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:04:58,415 INFO L93 Difference]: Finished difference Result 440 states and 693 transitions. [2022-07-19 11:04:58,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:04:58,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-07-19 11:04:58,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:04:58,417 INFO L225 Difference]: With dead ends: 440 [2022-07-19 11:04:58,417 INFO L226 Difference]: Without dead ends: 237 [2022-07-19 11:04:58,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:04:58,421 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 22 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:04:58,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 497 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:04:58,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-19 11:04:58,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 224. [2022-07-19 11:04:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.5739910313901346) internal successors, (351), 223 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:58,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 351 transitions. [2022-07-19 11:04:58,434 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 351 transitions. Word has length 60 [2022-07-19 11:04:58,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:04:58,435 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 351 transitions. [2022-07-19 11:04:58,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:04:58,435 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 351 transitions. [2022-07-19 11:04:58,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 11:04:58,436 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:04:58,438 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:04:58,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 11:04:58,438 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:04:58,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:04:58,439 INFO L85 PathProgramCache]: Analyzing trace with hash 723512942, now seen corresponding path program 1 times [2022-07-19 11:04:58,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:04:58,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954697632] [2022-07-19 11:04:58,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:04:58,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:04:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:04:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:04:58,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:04:58,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954697632] [2022-07-19 11:04:58,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954697632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:04:58,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:04:58,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:04:58,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417197335] [2022-07-19 11:04:58,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:04:58,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:04:58,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:04:58,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:04:58,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:04:58,562 INFO L87 Difference]: Start difference. First operand 224 states and 351 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:00,569 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:05:00,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:00,795 INFO L93 Difference]: Finished difference Result 440 states and 692 transitions. [2022-07-19 11:05:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:00,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-19 11:05:00,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:00,797 INFO L225 Difference]: With dead ends: 440 [2022-07-19 11:05:00,797 INFO L226 Difference]: Without dead ends: 237 [2022-07-19 11:05:00,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:00,798 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 20 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:00,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 497 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 11:05:00,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-19 11:05:00,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 224. [2022-07-19 11:05:00,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.5695067264573992) internal successors, (350), 223 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:00,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 350 transitions. [2022-07-19 11:05:00,804 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 350 transitions. Word has length 61 [2022-07-19 11:05:00,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:00,804 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 350 transitions. [2022-07-19 11:05:00,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:00,804 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 350 transitions. [2022-07-19 11:05:00,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 11:05:00,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:00,805 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:05:00,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 11:05:00,805 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:00,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:00,805 INFO L85 PathProgramCache]: Analyzing trace with hash 984557074, now seen corresponding path program 1 times [2022-07-19 11:05:00,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:00,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650723709] [2022-07-19 11:05:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:00,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:05:00,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:00,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650723709] [2022-07-19 11:05:00,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650723709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:00,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:00,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:00,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777768782] [2022-07-19 11:05:00,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:00,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:00,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:00,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:00,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:00,898 INFO L87 Difference]: Start difference. First operand 224 states and 350 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:01,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:01,922 INFO L93 Difference]: Finished difference Result 430 states and 678 transitions. [2022-07-19 11:05:01,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:01,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-19 11:05:01,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:01,924 INFO L225 Difference]: With dead ends: 430 [2022-07-19 11:05:01,924 INFO L226 Difference]: Without dead ends: 227 [2022-07-19 11:05:01,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:01,925 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 11 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:01,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 511 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:05:01,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-07-19 11:05:01,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 224. [2022-07-19 11:05:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.5650224215246638) internal successors, (349), 223 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:01,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 349 transitions. [2022-07-19 11:05:01,955 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 349 transitions. Word has length 62 [2022-07-19 11:05:01,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:01,956 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 349 transitions. [2022-07-19 11:05:01,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:01,957 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 349 transitions. [2022-07-19 11:05:01,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 11:05:01,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:01,957 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:05:01,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 11:05:01,958 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:01,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:01,959 INFO L85 PathProgramCache]: Analyzing trace with hash 372683642, now seen corresponding path program 1 times [2022-07-19 11:05:01,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:01,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544800299] [2022-07-19 11:05:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:01,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:02,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:05:02,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:02,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544800299] [2022-07-19 11:05:02,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544800299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:02,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:02,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:02,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289080475] [2022-07-19 11:05:02,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:02,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:02,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:02,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:02,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:02,059 INFO L87 Difference]: Start difference. First operand 224 states and 349 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:03,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:05:03,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:03,809 INFO L93 Difference]: Finished difference Result 467 states and 733 transitions. [2022-07-19 11:05:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:03,810 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-19 11:05:03,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:03,811 INFO L225 Difference]: With dead ends: 467 [2022-07-19 11:05:03,811 INFO L226 Difference]: Without dead ends: 264 [2022-07-19 11:05:03,812 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 [2022-07-19 11:05:03,813 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 31 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:03,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 515 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 11:05:03,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-19 11:05:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 246. [2022-07-19 11:05:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.5673469387755101) internal successors, (384), 245 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 384 transitions. [2022-07-19 11:05:03,818 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 384 transitions. Word has length 62 [2022-07-19 11:05:03,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:03,818 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 384 transitions. [2022-07-19 11:05:03,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:03,819 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 384 transitions. [2022-07-19 11:05:03,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-19 11:05:03,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:03,821 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-07-19 11:05:03,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 11:05:03,821 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:03,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:03,822 INFO L85 PathProgramCache]: Analyzing trace with hash 91774590, now seen corresponding path program 1 times [2022-07-19 11:05:03,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:03,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863648733] [2022-07-19 11:05:03,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:03,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:05:03,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:03,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863648733] [2022-07-19 11:05:03,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863648733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:03,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:03,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:03,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112339569] [2022-07-19 11:05:03,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:03,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:03,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:03,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:03,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:03,926 INFO L87 Difference]: Start difference. First operand 246 states and 384 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:04,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:04,976 INFO L93 Difference]: Finished difference Result 575 states and 905 transitions. [2022-07-19 11:05:04,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:04,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-07-19 11:05:04,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:04,979 INFO L225 Difference]: With dead ends: 575 [2022-07-19 11:05:04,979 INFO L226 Difference]: Without dead ends: 350 [2022-07-19 11:05:04,979 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 [2022-07-19 11:05:04,980 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 156 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:04,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 352 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:05:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-19 11:05:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 246. [2022-07-19 11:05:04,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.5510204081632653) internal successors, (380), 245 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 380 transitions. [2022-07-19 11:05:04,987 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 380 transitions. Word has length 76 [2022-07-19 11:05:04,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:04,988 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 380 transitions. [2022-07-19 11:05:04,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:04,988 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 380 transitions. [2022-07-19 11:05:04,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-19 11:05:04,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:04,989 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:05:04,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 11:05:04,990 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:04,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:04,990 INFO L85 PathProgramCache]: Analyzing trace with hash -760342187, now seen corresponding path program 1 times [2022-07-19 11:05:04,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:04,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636415734] [2022-07-19 11:05:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:04,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:05:05,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:05,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636415734] [2022-07-19 11:05:05,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636415734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:05,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:05,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:05,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885136205] [2022-07-19 11:05:05,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:05,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:05,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:05,101 INFO L87 Difference]: Start difference. First operand 246 states and 380 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:05,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:05,660 INFO L93 Difference]: Finished difference Result 488 states and 758 transitions. [2022-07-19 11:05:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:05,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-07-19 11:05:05,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:05,661 INFO L225 Difference]: With dead ends: 488 [2022-07-19 11:05:05,662 INFO L226 Difference]: Without dead ends: 263 [2022-07-19 11:05:05,662 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 [2022-07-19 11:05:05,663 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 33 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:05,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 517 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:05,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-19 11:05:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 246. [2022-07-19 11:05:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.546938775510204) internal successors, (379), 245 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 379 transitions. [2022-07-19 11:05:05,670 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 379 transitions. Word has length 76 [2022-07-19 11:05:05,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:05,670 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 379 transitions. [2022-07-19 11:05:05,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:05,670 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 379 transitions. [2022-07-19 11:05:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-19 11:05:05,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:05,671 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-07-19 11:05:05,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 11:05:05,672 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:05,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash 345979256, now seen corresponding path program 1 times [2022-07-19 11:05:05,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:05,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812083737] [2022-07-19 11:05:05,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:05,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:05,794 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:05:05,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:05,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812083737] [2022-07-19 11:05:05,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812083737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:05,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:05,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:05,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006797904] [2022-07-19 11:05:05,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:05,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:05,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:05,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:05,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:05,798 INFO L87 Difference]: Start difference. First operand 246 states and 379 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:06,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:06,933 INFO L93 Difference]: Finished difference Result 575 states and 895 transitions. [2022-07-19 11:05:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:06,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-19 11:05:06,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:06,935 INFO L225 Difference]: With dead ends: 575 [2022-07-19 11:05:06,936 INFO L226 Difference]: Without dead ends: 350 [2022-07-19 11:05:06,936 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 [2022-07-19 11:05:06,937 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 154 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:06,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 352 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:05:06,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-19 11:05:06,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 246. [2022-07-19 11:05:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.530612244897959) internal successors, (375), 245 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 375 transitions. [2022-07-19 11:05:06,943 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 375 transitions. Word has length 77 [2022-07-19 11:05:06,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:06,943 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 375 transitions. [2022-07-19 11:05:06,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:06,944 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 375 transitions. [2022-07-19 11:05:06,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-19 11:05:06,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:06,945 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-07-19 11:05:06,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 11:05:06,945 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:06,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:06,946 INFO L85 PathProgramCache]: Analyzing trace with hash 901152003, now seen corresponding path program 1 times [2022-07-19 11:05:06,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:06,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586888560] [2022-07-19 11:05:06,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:06,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:05:07,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:07,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586888560] [2022-07-19 11:05:07,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586888560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:07,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:07,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:07,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332578053] [2022-07-19 11:05:07,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:07,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:07,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:07,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:07,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:07,053 INFO L87 Difference]: Start difference. First operand 246 states and 375 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:08,338 INFO L93 Difference]: Finished difference Result 575 states and 887 transitions. [2022-07-19 11:05:08,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:08,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-07-19 11:05:08,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:08,340 INFO L225 Difference]: With dead ends: 575 [2022-07-19 11:05:08,340 INFO L226 Difference]: Without dead ends: 350 [2022-07-19 11:05:08,341 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 [2022-07-19 11:05:08,341 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 152 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:08,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 352 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 11:05:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-19 11:05:08,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 246. [2022-07-19 11:05:08,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.5142857142857142) internal successors, (371), 245 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 371 transitions. [2022-07-19 11:05:08,347 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 371 transitions. Word has length 78 [2022-07-19 11:05:08,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:08,348 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 371 transitions. [2022-07-19 11:05:08,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:08,348 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 371 transitions. [2022-07-19 11:05:08,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-19 11:05:08,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:08,349 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:05:08,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 11:05:08,349 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:08,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:08,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2098566627, now seen corresponding path program 1 times [2022-07-19 11:05:08,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:08,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209464912] [2022-07-19 11:05:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:08,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 11:05:08,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:08,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209464912] [2022-07-19 11:05:08,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209464912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:08,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:08,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:08,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36163565] [2022-07-19 11:05:08,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:08,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:08,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:08,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:08,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:08,440 INFO L87 Difference]: Start difference. First operand 246 states and 371 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:09,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:09,002 INFO L93 Difference]: Finished difference Result 565 states and 866 transitions. [2022-07-19 11:05:09,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:09,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-07-19 11:05:09,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:09,004 INFO L225 Difference]: With dead ends: 565 [2022-07-19 11:05:09,004 INFO L226 Difference]: Without dead ends: 340 [2022-07-19 11:05:09,004 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 [2022-07-19 11:05:09,005 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 143 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:09,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 372 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 11:05:09,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-07-19 11:05:09,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 246. [2022-07-19 11:05:09,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.4979591836734694) internal successors, (367), 245 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 367 transitions. [2022-07-19 11:05:09,012 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 367 transitions. Word has length 79 [2022-07-19 11:05:09,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:09,012 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 367 transitions. [2022-07-19 11:05:09,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:09,012 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 367 transitions. [2022-07-19 11:05:09,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-19 11:05:09,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:09,013 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 11:05:09,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 11:05:09,013 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:09,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:09,014 INFO L85 PathProgramCache]: Analyzing trace with hash -549995900, now seen corresponding path program 1 times [2022-07-19 11:05:09,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:09,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559638120] [2022-07-19 11:05:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:09,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:05:09,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:09,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559638120] [2022-07-19 11:05:09,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559638120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:09,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:09,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:09,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139959753] [2022-07-19 11:05:09,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:09,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:09,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:09,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:09,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:09,154 INFO L87 Difference]: Start difference. First operand 246 states and 367 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:10,505 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:05:10,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:10,792 INFO L93 Difference]: Finished difference Result 565 states and 858 transitions. [2022-07-19 11:05:10,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:10,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-07-19 11:05:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:10,794 INFO L225 Difference]: With dead ends: 565 [2022-07-19 11:05:10,794 INFO L226 Difference]: Without dead ends: 340 [2022-07-19 11:05:10,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:10,795 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 117 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:10,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 390 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-19 11:05:10,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-07-19 11:05:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 269. [2022-07-19 11:05:10,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.537313432835821) internal successors, (412), 268 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:10,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 412 transitions. [2022-07-19 11:05:10,802 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 412 transitions. Word has length 84 [2022-07-19 11:05:10,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:10,802 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 412 transitions. [2022-07-19 11:05:10,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:10,803 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 412 transitions. [2022-07-19 11:05:10,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 11:05:10,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:10,804 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:05:10,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 11:05:10,804 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:10,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:10,805 INFO L85 PathProgramCache]: Analyzing trace with hash -234714967, now seen corresponding path program 1 times [2022-07-19 11:05:10,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:10,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133589160] [2022-07-19 11:05:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:10,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:05:10,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:10,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133589160] [2022-07-19 11:05:10,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133589160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:10,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:10,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:10,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790128572] [2022-07-19 11:05:10,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:10,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:10,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:10,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:10,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:10,929 INFO L87 Difference]: Start difference. First operand 269 states and 412 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:12,152 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:05:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:12,419 INFO L93 Difference]: Finished difference Result 604 states and 932 transitions. [2022-07-19 11:05:12,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:12,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-19 11:05:12,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:12,421 INFO L225 Difference]: With dead ends: 604 [2022-07-19 11:05:12,421 INFO L226 Difference]: Without dead ends: 356 [2022-07-19 11:05:12,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:12,422 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 84 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:12,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 493 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-19 11:05:12,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-07-19 11:05:12,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 303. [2022-07-19 11:05:12,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.5397350993377483) internal successors, (465), 302 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 465 transitions. [2022-07-19 11:05:12,429 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 465 transitions. Word has length 112 [2022-07-19 11:05:12,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:12,430 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 465 transitions. [2022-07-19 11:05:12,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:12,430 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 465 transitions. [2022-07-19 11:05:12,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 11:05:12,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:12,431 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:05:12,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 11:05:12,431 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:12,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:12,432 INFO L85 PathProgramCache]: Analyzing trace with hash -727341141, now seen corresponding path program 1 times [2022-07-19 11:05:12,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:12,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35656575] [2022-07-19 11:05:12,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:12,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:12,530 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:05:12,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:12,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35656575] [2022-07-19 11:05:12,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35656575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:12,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:12,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:12,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147594988] [2022-07-19 11:05:12,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:12,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:12,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:12,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:12,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:12,533 INFO L87 Difference]: Start difference. First operand 303 states and 465 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:13,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:13,728 INFO L93 Difference]: Finished difference Result 732 states and 1136 transitions. [2022-07-19 11:05:13,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:13,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-19 11:05:13,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:13,731 INFO L225 Difference]: With dead ends: 732 [2022-07-19 11:05:13,731 INFO L226 Difference]: Without dead ends: 450 [2022-07-19 11:05:13,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:13,732 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 123 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:13,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 382 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 11:05:13,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-07-19 11:05:13,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 333. [2022-07-19 11:05:13,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.5481927710843373) internal successors, (514), 332 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:13,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 514 transitions. [2022-07-19 11:05:13,741 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 514 transitions. Word has length 112 [2022-07-19 11:05:13,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:13,741 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 514 transitions. [2022-07-19 11:05:13,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:13,741 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 514 transitions. [2022-07-19 11:05:13,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 11:05:13,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:13,743 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:05:13,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 11:05:13,743 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:13,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:13,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1925843136, now seen corresponding path program 1 times [2022-07-19 11:05:13,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:13,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259525273] [2022-07-19 11:05:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:13,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:05:13,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:13,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259525273] [2022-07-19 11:05:13,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259525273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:13,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:13,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:13,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250125770] [2022-07-19 11:05:13,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:13,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:13,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:13,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:13,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:13,849 INFO L87 Difference]: Start difference. First operand 333 states and 514 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:14,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:14,835 INFO L93 Difference]: Finished difference Result 756 states and 1171 transitions. [2022-07-19 11:05:14,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:14,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-07-19 11:05:14,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:14,837 INFO L225 Difference]: With dead ends: 756 [2022-07-19 11:05:14,837 INFO L226 Difference]: Without dead ends: 444 [2022-07-19 11:05:14,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:14,838 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 119 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:14,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 370 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:05:14,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-19 11:05:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 370. [2022-07-19 11:05:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.5528455284552845) internal successors, (573), 369 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 573 transitions. [2022-07-19 11:05:14,847 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 573 transitions. Word has length 118 [2022-07-19 11:05:14,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:14,847 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 573 transitions. [2022-07-19 11:05:14,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:14,847 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 573 transitions. [2022-07-19 11:05:14,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-19 11:05:14,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:14,849 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:05:14,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 11:05:14,849 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:14,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:14,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1453716479, now seen corresponding path program 1 times [2022-07-19 11:05:14,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:14,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216917345] [2022-07-19 11:05:14,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:05:14,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:14,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216917345] [2022-07-19 11:05:14,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216917345] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:14,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:14,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:14,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924694759] [2022-07-19 11:05:14,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:14,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:14,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:14,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:14,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:14,951 INFO L87 Difference]: Start difference. First operand 370 states and 573 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:15,542 INFO L93 Difference]: Finished difference Result 803 states and 1248 transitions. [2022-07-19 11:05:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:15,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-07-19 11:05:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:15,544 INFO L225 Difference]: With dead ends: 803 [2022-07-19 11:05:15,544 INFO L226 Difference]: Without dead ends: 454 [2022-07-19 11:05:15,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:15,545 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 73 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:15,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 495 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:05:15,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-19 11:05:15,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 410. [2022-07-19 11:05:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 1.5550122249388754) internal successors, (636), 409 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 636 transitions. [2022-07-19 11:05:15,554 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 636 transitions. Word has length 119 [2022-07-19 11:05:15,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:15,555 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 636 transitions. [2022-07-19 11:05:15,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:15,555 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 636 transitions. [2022-07-19 11:05:15,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-19 11:05:15,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:15,557 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:05:15,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 11:05:15,557 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:15,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:15,558 INFO L85 PathProgramCache]: Analyzing trace with hash 763913919, now seen corresponding path program 1 times [2022-07-19 11:05:15,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:15,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754381904] [2022-07-19 11:05:15,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:15,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 11:05:15,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:15,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754381904] [2022-07-19 11:05:15,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754381904] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:15,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:15,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:15,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349611037] [2022-07-19 11:05:15,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:15,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:15,682 INFO L87 Difference]: Start difference. First operand 410 states and 636 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:16,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:16,104 INFO L93 Difference]: Finished difference Result 836 states and 1301 transitions. [2022-07-19 11:05:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:16,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-07-19 11:05:16,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:16,107 INFO L225 Difference]: With dead ends: 836 [2022-07-19 11:05:16,107 INFO L226 Difference]: Without dead ends: 447 [2022-07-19 11:05:16,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:16,108 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 28 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:16,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 595 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 11:05:16,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-07-19 11:05:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 434. [2022-07-19 11:05:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.5496535796766744) internal successors, (671), 433 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 671 transitions. [2022-07-19 11:05:16,116 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 671 transitions. Word has length 119 [2022-07-19 11:05:16,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:16,117 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 671 transitions. [2022-07-19 11:05:16,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 671 transitions. [2022-07-19 11:05:16,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 11:05:16,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:16,118 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 11:05:16,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 11:05:16,118 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:16,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:16,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1150598766, now seen corresponding path program 1 times [2022-07-19 11:05:16,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:16,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549648742] [2022-07-19 11:05:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:16,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:16,228 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 11:05:16,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:16,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549648742] [2022-07-19 11:05:16,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549648742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:16,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:16,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:16,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094482499] [2022-07-19 11:05:16,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:16,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:16,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:16,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:16,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:16,230 INFO L87 Difference]: Start difference. First operand 434 states and 671 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:16,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:16,861 INFO L93 Difference]: Finished difference Result 885 states and 1371 transitions. [2022-07-19 11:05:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:16,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-07-19 11:05:16,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:16,863 INFO L225 Difference]: With dead ends: 885 [2022-07-19 11:05:16,864 INFO L226 Difference]: Without dead ends: 472 [2022-07-19 11:05:16,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:16,865 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 61 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:16,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 501 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:05:16,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-07-19 11:05:16,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 437. [2022-07-19 11:05:16,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.5458715596330275) internal successors, (674), 436 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 674 transitions. [2022-07-19 11:05:16,874 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 674 transitions. Word has length 126 [2022-07-19 11:05:16,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:16,874 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 674 transitions. [2022-07-19 11:05:16,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:16,875 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 674 transitions. [2022-07-19 11:05:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-19 11:05:16,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:16,876 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-19 11:05:16,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 11:05:16,877 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:16,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:16,877 INFO L85 PathProgramCache]: Analyzing trace with hash 29247942, now seen corresponding path program 1 times [2022-07-19 11:05:16,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:16,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220962298] [2022-07-19 11:05:16,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:16,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:05:16,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:16,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220962298] [2022-07-19 11:05:16,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220962298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:16,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:16,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:16,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367912641] [2022-07-19 11:05:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:16,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:16,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:16,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:16,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:16,985 INFO L87 Difference]: Start difference. First operand 437 states and 674 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:18,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:18,081 INFO L93 Difference]: Finished difference Result 887 states and 1372 transitions. [2022-07-19 11:05:18,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:18,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-07-19 11:05:18,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:18,084 INFO L225 Difference]: With dead ends: 887 [2022-07-19 11:05:18,084 INFO L226 Difference]: Without dead ends: 471 [2022-07-19 11:05:18,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:18,085 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 83 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:18,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 503 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 11:05:18,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-07-19 11:05:18,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 437. [2022-07-19 11:05:18,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.5435779816513762) internal successors, (673), 436 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 673 transitions. [2022-07-19 11:05:18,094 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 673 transitions. Word has length 133 [2022-07-19 11:05:18,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:18,094 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 673 transitions. [2022-07-19 11:05:18,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:18,095 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 673 transitions. [2022-07-19 11:05:18,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-19 11:05:18,096 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:18,096 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-19 11:05:18,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 11:05:18,096 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:18,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:18,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1906311172, now seen corresponding path program 1 times [2022-07-19 11:05:18,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:18,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817875068] [2022-07-19 11:05:18,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:18,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:05:18,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:18,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817875068] [2022-07-19 11:05:18,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817875068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:18,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:18,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:18,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523474169] [2022-07-19 11:05:18,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:18,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:18,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:18,187 INFO L87 Difference]: Start difference. First operand 437 states and 673 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:18,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:18,846 INFO L93 Difference]: Finished difference Result 865 states and 1338 transitions. [2022-07-19 11:05:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:18,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-07-19 11:05:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:18,849 INFO L225 Difference]: With dead ends: 865 [2022-07-19 11:05:18,849 INFO L226 Difference]: Without dead ends: 449 [2022-07-19 11:05:18,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:18,850 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 33 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:18,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 595 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 11:05:18,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-07-19 11:05:18,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 437. [2022-07-19 11:05:18,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 1.5412844036697249) internal successors, (672), 436 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:18,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 672 transitions. [2022-07-19 11:05:18,859 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 672 transitions. Word has length 133 [2022-07-19 11:05:18,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:18,859 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 672 transitions. [2022-07-19 11:05:18,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 672 transitions. [2022-07-19 11:05:18,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-19 11:05:18,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:18,861 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 11:05:18,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 11:05:18,861 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:18,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:18,862 INFO L85 PathProgramCache]: Analyzing trace with hash 130218183, now seen corresponding path program 1 times [2022-07-19 11:05:18,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:18,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608665469] [2022-07-19 11:05:18,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:18,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:05:18,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:18,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608665469] [2022-07-19 11:05:18,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608665469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:18,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:18,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:18,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307991992] [2022-07-19 11:05:18,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:18,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:18,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:18,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:18,962 INFO L87 Difference]: Start difference. First operand 437 states and 672 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:19,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:19,825 INFO L93 Difference]: Finished difference Result 964 states and 1486 transitions. [2022-07-19 11:05:19,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:19,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-07-19 11:05:19,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:19,827 INFO L225 Difference]: With dead ends: 964 [2022-07-19 11:05:19,827 INFO L226 Difference]: Without dead ends: 548 [2022-07-19 11:05:19,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:19,829 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 126 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:19,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 390 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:05:19,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-07-19 11:05:19,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 467. [2022-07-19 11:05:19,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.5321888412017168) internal successors, (714), 466 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:19,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 714 transitions. [2022-07-19 11:05:19,847 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 714 transitions. Word has length 139 [2022-07-19 11:05:19,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:19,847 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 714 transitions. [2022-07-19 11:05:19,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:19,848 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 714 transitions. [2022-07-19 11:05:19,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 11:05:19,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:19,849 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:05:19,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 11:05:19,849 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:19,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:19,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1668573377, now seen corresponding path program 1 times [2022-07-19 11:05:19,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:19,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310856511] [2022-07-19 11:05:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:19,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:19,945 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 11:05:19,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:19,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310856511] [2022-07-19 11:05:19,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310856511] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:19,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:19,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:19,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813951481] [2022-07-19 11:05:19,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:19,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:19,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:19,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:19,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:19,948 INFO L87 Difference]: Start difference. First operand 467 states and 714 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:20,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:20,715 INFO L93 Difference]: Finished difference Result 984 states and 1506 transitions. [2022-07-19 11:05:20,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:20,716 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-19 11:05:20,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:20,718 INFO L225 Difference]: With dead ends: 984 [2022-07-19 11:05:20,718 INFO L226 Difference]: Without dead ends: 538 [2022-07-19 11:05:20,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:20,719 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 125 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:20,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 370 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 11:05:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-07-19 11:05:20,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 467. [2022-07-19 11:05:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.51931330472103) internal successors, (708), 466 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:20,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 708 transitions. [2022-07-19 11:05:20,729 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 708 transitions. Word has length 140 [2022-07-19 11:05:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:20,729 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 708 transitions. [2022-07-19 11:05:20,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 708 transitions. [2022-07-19 11:05:20,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 11:05:20,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:20,731 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-19 11:05:20,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 11:05:20,731 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:20,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash 902292681, now seen corresponding path program 1 times [2022-07-19 11:05:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:20,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112472109] [2022-07-19 11:05:20,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:20,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 11:05:20,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:20,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112472109] [2022-07-19 11:05:20,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112472109] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:20,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:20,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:20,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306430760] [2022-07-19 11:05:20,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:20,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:20,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:20,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:20,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:20,840 INFO L87 Difference]: Start difference. First operand 467 states and 708 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:22,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:05:22,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:22,568 INFO L93 Difference]: Finished difference Result 945 states and 1438 transitions. [2022-07-19 11:05:22,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:22,569 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-07-19 11:05:22,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:22,570 INFO L225 Difference]: With dead ends: 945 [2022-07-19 11:05:22,570 INFO L226 Difference]: Without dead ends: 499 [2022-07-19 11:05:22,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:22,571 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 73 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:22,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 521 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-19 11:05:22,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-07-19 11:05:22,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 467. [2022-07-19 11:05:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 466 states have (on average 1.5171673819742488) internal successors, (707), 466 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:22,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 707 transitions. [2022-07-19 11:05:22,582 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 707 transitions. Word has length 141 [2022-07-19 11:05:22,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:22,583 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 707 transitions. [2022-07-19 11:05:22,583 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:22,583 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 707 transitions. [2022-07-19 11:05:22,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 11:05:22,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:22,585 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-19 11:05:22,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 11:05:22,585 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:22,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1004110585, now seen corresponding path program 1 times [2022-07-19 11:05:22,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:22,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600468138] [2022-07-19 11:05:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:22,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 11:05:22,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:22,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600468138] [2022-07-19 11:05:22,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600468138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:22,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:22,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:05:22,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153437551] [2022-07-19 11:05:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:22,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:05:22,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:05:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:22,682 INFO L87 Difference]: Start difference. First operand 467 states and 707 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:22,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:22,727 INFO L93 Difference]: Finished difference Result 1356 states and 2069 transitions. [2022-07-19 11:05:22,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:05:22,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-07-19 11:05:22,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:22,731 INFO L225 Difference]: With dead ends: 1356 [2022-07-19 11:05:22,731 INFO L226 Difference]: Without dead ends: 910 [2022-07-19 11:05:22,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:22,733 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 145 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:22,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 431 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:05:22,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 910 states. [2022-07-19 11:05:22,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 910 to 910. [2022-07-19 11:05:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 909 states have (on average 1.5115511551155116) internal successors, (1374), 909 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1374 transitions. [2022-07-19 11:05:22,750 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1374 transitions. Word has length 141 [2022-07-19 11:05:22,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:22,750 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1374 transitions. [2022-07-19 11:05:22,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:22,751 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1374 transitions. [2022-07-19 11:05:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 11:05:22,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:22,753 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-19 11:05:22,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 11:05:22,753 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:22,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:22,753 INFO L85 PathProgramCache]: Analyzing trace with hash 893386181, now seen corresponding path program 1 times [2022-07-19 11:05:22,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:22,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16184959] [2022-07-19 11:05:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:22,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-19 11:05:22,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:22,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16184959] [2022-07-19 11:05:22,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16184959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:22,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:22,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:05:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897815228] [2022-07-19 11:05:22,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:22,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:05:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:05:22,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:22,860 INFO L87 Difference]: Start difference. First operand 910 states and 1374 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:22,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:22,896 INFO L93 Difference]: Finished difference Result 1826 states and 2760 transitions. [2022-07-19 11:05:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:05:22,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-07-19 11:05:22,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:22,900 INFO L225 Difference]: With dead ends: 1826 [2022-07-19 11:05:22,900 INFO L226 Difference]: Without dead ends: 937 [2022-07-19 11:05:22,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:22,902 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:22,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 416 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:05:22,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2022-07-19 11:05:22,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 937. [2022-07-19 11:05:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 936 states have (on average 1.5053418803418803) internal successors, (1409), 936 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:22,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1409 transitions. [2022-07-19 11:05:22,919 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1409 transitions. Word has length 141 [2022-07-19 11:05:22,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:22,919 INFO L495 AbstractCegarLoop]: Abstraction has 937 states and 1409 transitions. [2022-07-19 11:05:22,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:22,921 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1409 transitions. [2022-07-19 11:05:22,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 11:05:22,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:22,923 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-19 11:05:22,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 11:05:22,924 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:22,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:22,925 INFO L85 PathProgramCache]: Analyzing trace with hash -199249021, now seen corresponding path program 1 times [2022-07-19 11:05:22,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:22,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903812776] [2022-07-19 11:05:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:22,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:23,004 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-19 11:05:23,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:23,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903812776] [2022-07-19 11:05:23,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903812776] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:23,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:23,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:05:23,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526151814] [2022-07-19 11:05:23,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:23,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:05:23,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:23,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:05:23,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:23,006 INFO L87 Difference]: Start difference. First operand 937 states and 1409 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:23,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:23,045 INFO L93 Difference]: Finished difference Result 1855 states and 2796 transitions. [2022-07-19 11:05:23,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:05:23,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-07-19 11:05:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:23,048 INFO L225 Difference]: With dead ends: 1855 [2022-07-19 11:05:23,048 INFO L226 Difference]: Without dead ends: 939 [2022-07-19 11:05:23,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:23,049 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:23,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 395 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:05:23,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-07-19 11:05:23,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 939. [2022-07-19 11:05:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 938 states have (on average 1.504264392324094) internal successors, (1411), 938 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:23,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1411 transitions. [2022-07-19 11:05:23,066 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1411 transitions. Word has length 141 [2022-07-19 11:05:23,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:23,066 INFO L495 AbstractCegarLoop]: Abstraction has 939 states and 1411 transitions. [2022-07-19 11:05:23,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:23,066 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1411 transitions. [2022-07-19 11:05:23,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-19 11:05:23,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:23,068 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-19 11:05:23,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 11:05:23,069 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:23,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:23,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1694375453, now seen corresponding path program 1 times [2022-07-19 11:05:23,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:23,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694487314] [2022-07-19 11:05:23,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:23,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 11:05:23,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:23,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694487314] [2022-07-19 11:05:23,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694487314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:23,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:23,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:05:23,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000140863] [2022-07-19 11:05:23,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:23,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:05:23,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:23,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:05:23,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:23,166 INFO L87 Difference]: Start difference. First operand 939 states and 1411 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:23,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:23,220 INFO L93 Difference]: Finished difference Result 2298 states and 3475 transitions. [2022-07-19 11:05:23,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:05:23,221 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-07-19 11:05:23,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:23,225 INFO L225 Difference]: With dead ends: 2298 [2022-07-19 11:05:23,225 INFO L226 Difference]: Without dead ends: 1382 [2022-07-19 11:05:23,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:23,227 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:23,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 576 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:05:23,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2022-07-19 11:05:23,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1382. [2022-07-19 11:05:23,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1381 states have (on average 1.5047067342505431) internal successors, (2078), 1381 states have internal predecessors, (2078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:23,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 2078 transitions. [2022-07-19 11:05:23,263 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 2078 transitions. Word has length 143 [2022-07-19 11:05:23,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:23,264 INFO L495 AbstractCegarLoop]: Abstraction has 1382 states and 2078 transitions. [2022-07-19 11:05:23,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:23,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 2078 transitions. [2022-07-19 11:05:23,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-19 11:05:23,267 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:23,267 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 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] [2022-07-19 11:05:23,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 11:05:23,267 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:23,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:23,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1592335477, now seen corresponding path program 1 times [2022-07-19 11:05:23,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:23,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567542210] [2022-07-19 11:05:23,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:23,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-19 11:05:23,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:23,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567542210] [2022-07-19 11:05:23,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567542210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:23,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:23,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:23,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957984798] [2022-07-19 11:05:23,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:23,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:23,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:23,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:23,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:23,373 INFO L87 Difference]: Start difference. First operand 1382 states and 2078 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:24,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:24,288 INFO L93 Difference]: Finished difference Result 2894 states and 4357 transitions. [2022-07-19 11:05:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:24,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2022-07-19 11:05:24,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:24,294 INFO L225 Difference]: With dead ends: 2894 [2022-07-19 11:05:24,294 INFO L226 Difference]: Without dead ends: 1535 [2022-07-19 11:05:24,295 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 [2022-07-19 11:05:24,296 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 42 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:24,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 611 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 11:05:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2022-07-19 11:05:24,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1466. [2022-07-19 11:05:24,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 1.5064846416382252) internal successors, (2207), 1465 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:24,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2207 transitions. [2022-07-19 11:05:24,322 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2207 transitions. Word has length 172 [2022-07-19 11:05:24,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:24,322 INFO L495 AbstractCegarLoop]: Abstraction has 1466 states and 2207 transitions. [2022-07-19 11:05:24,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:24,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2207 transitions. [2022-07-19 11:05:24,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-19 11:05:24,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:24,325 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 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] [2022-07-19 11:05:24,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 11:05:24,326 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:24,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:24,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1996367824, now seen corresponding path program 1 times [2022-07-19 11:05:24,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:24,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682577259] [2022-07-19 11:05:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:24,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-19 11:05:24,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:24,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682577259] [2022-07-19 11:05:24,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682577259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:24,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:24,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:24,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984135375] [2022-07-19 11:05:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:24,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:24,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:24,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:24,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:24,455 INFO L87 Difference]: Start difference. First operand 1466 states and 2207 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:25,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:25,493 INFO L93 Difference]: Finished difference Result 3114 states and 4666 transitions. [2022-07-19 11:05:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:25,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2022-07-19 11:05:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:25,499 INFO L225 Difference]: With dead ends: 3114 [2022-07-19 11:05:25,499 INFO L226 Difference]: Without dead ends: 1671 [2022-07-19 11:05:25,500 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 [2022-07-19 11:05:25,501 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 137 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:25,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 372 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:05:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2022-07-19 11:05:25,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1466. [2022-07-19 11:05:25,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1465 states have (on average 1.4921501706484641) internal successors, (2186), 1465 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:25,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2186 transitions. [2022-07-19 11:05:25,547 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2186 transitions. Word has length 186 [2022-07-19 11:05:25,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:25,548 INFO L495 AbstractCegarLoop]: Abstraction has 1466 states and 2186 transitions. [2022-07-19 11:05:25,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:25,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2186 transitions. [2022-07-19 11:05:25,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-19 11:05:25,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:25,551 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 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] [2022-07-19 11:05:25,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 11:05:25,551 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:25,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:25,552 INFO L85 PathProgramCache]: Analyzing trace with hash 519444691, now seen corresponding path program 1 times [2022-07-19 11:05:25,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:25,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134643201] [2022-07-19 11:05:25,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:25,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 252 proven. 38 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-19 11:05:25,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:25,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134643201] [2022-07-19 11:05:25,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134643201] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:25,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885516552] [2022-07-19 11:05:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:25,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:25,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:05:25,703 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) [2022-07-19 11:05:25,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 11:05:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:26,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1183 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 11:05:26,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:05:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-19 11:05:26,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 11:05:26,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885516552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:26,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 11:05:26,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-19 11:05:26,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658906262] [2022-07-19 11:05:26,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:26,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:05:26,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:05:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:05:26,508 INFO L87 Difference]: Start difference. First operand 1466 states and 2186 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:26,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:26,578 INFO L93 Difference]: Finished difference Result 3381 states and 5062 transitions. [2022-07-19 11:05:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:05:26,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2022-07-19 11:05:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:26,585 INFO L225 Difference]: With dead ends: 3381 [2022-07-19 11:05:26,585 INFO L226 Difference]: Without dead ends: 1938 [2022-07-19 11:05:26,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:05:26,588 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 157 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:26,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 378 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:05:26,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2022-07-19 11:05:26,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1938. [2022-07-19 11:05:26,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1938 states, 1937 states have (on average 1.4945792462570986) internal successors, (2895), 1937 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 2895 transitions. [2022-07-19 11:05:26,639 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 2895 transitions. Word has length 194 [2022-07-19 11:05:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:26,640 INFO L495 AbstractCegarLoop]: Abstraction has 1938 states and 2895 transitions. [2022-07-19 11:05:26,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 2895 transitions. [2022-07-19 11:05:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-19 11:05:26,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:26,644 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 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] [2022-07-19 11:05:26,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 11:05:26,859 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,SelfDestructingSolverStorable34 [2022-07-19 11:05:26,859 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:26,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:26,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1867638988, now seen corresponding path program 1 times [2022-07-19 11:05:26,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:26,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5456997] [2022-07-19 11:05:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:26,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-19 11:05:26,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:26,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5456997] [2022-07-19 11:05:26,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5456997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:26,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:26,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:05:26,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110329634] [2022-07-19 11:05:26,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:26,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:05:26,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:26,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:05:26,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:26,996 INFO L87 Difference]: Start difference. First operand 1938 states and 2895 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:27,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:27,092 INFO L93 Difference]: Finished difference Result 4325 states and 6480 transitions. [2022-07-19 11:05:27,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:05:27,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2022-07-19 11:05:27,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:27,100 INFO L225 Difference]: With dead ends: 4325 [2022-07-19 11:05:27,100 INFO L226 Difference]: Without dead ends: 2410 [2022-07-19 11:05:27,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:27,103 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 157 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:27,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 377 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 11:05:27,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2022-07-19 11:05:27,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 2410. [2022-07-19 11:05:27,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2410 states, 2409 states have (on average 1.4964715649647156) internal successors, (3605), 2409 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:27,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 3605 transitions. [2022-07-19 11:05:27,150 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 3605 transitions. Word has length 196 [2022-07-19 11:05:27,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:27,150 INFO L495 AbstractCegarLoop]: Abstraction has 2410 states and 3605 transitions. [2022-07-19 11:05:27,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:27,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 3605 transitions. [2022-07-19 11:05:27,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-19 11:05:27,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:27,156 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-19 11:05:27,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 11:05:27,156 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:27,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:27,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1420264172, now seen corresponding path program 1 times [2022-07-19 11:05:27,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:27,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289158962] [2022-07-19 11:05:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:27,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:27,309 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-19 11:05:27,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:27,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289158962] [2022-07-19 11:05:27,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289158962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:27,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:27,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:05:27,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362231780] [2022-07-19 11:05:27,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:27,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:05:27,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:27,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:05:27,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:27,315 INFO L87 Difference]: Start difference. First operand 2410 states and 3605 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:27,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:27,396 INFO L93 Difference]: Finished difference Result 5269 states and 7900 transitions. [2022-07-19 11:05:27,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:05:27,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2022-07-19 11:05:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:27,421 INFO L225 Difference]: With dead ends: 5269 [2022-07-19 11:05:27,421 INFO L226 Difference]: Without dead ends: 2882 [2022-07-19 11:05:27,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:27,425 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 161 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:27,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 376 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:05:27,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2022-07-19 11:05:27,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2882. [2022-07-19 11:05:27,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2881 states have (on average 1.498090940645609) internal successors, (4316), 2881 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:27,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4316 transitions. [2022-07-19 11:05:27,508 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4316 transitions. Word has length 235 [2022-07-19 11:05:27,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:27,508 INFO L495 AbstractCegarLoop]: Abstraction has 2882 states and 4316 transitions. [2022-07-19 11:05:27,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:27,509 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4316 transitions. [2022-07-19 11:05:27,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-19 11:05:27,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:27,514 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-19 11:05:27,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 11:05:27,515 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:27,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:27,518 INFO L85 PathProgramCache]: Analyzing trace with hash -390648618, now seen corresponding path program 1 times [2022-07-19 11:05:27,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:27,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292840862] [2022-07-19 11:05:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:27,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:27,658 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-19 11:05:27,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:27,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292840862] [2022-07-19 11:05:27,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292840862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:27,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:27,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:05:27,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129810942] [2022-07-19 11:05:27,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:27,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:05:27,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:27,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:05:27,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:27,661 INFO L87 Difference]: Start difference. First operand 2882 states and 4316 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:27,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:27,766 INFO L93 Difference]: Finished difference Result 6213 states and 9322 transitions. [2022-07-19 11:05:27,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:05:27,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2022-07-19 11:05:27,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:27,772 INFO L225 Difference]: With dead ends: 6213 [2022-07-19 11:05:27,772 INFO L226 Difference]: Without dead ends: 3354 [2022-07-19 11:05:27,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:27,775 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 162 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:27,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 375 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:05:27,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3354 states. [2022-07-19 11:05:27,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3354 to 3354. [2022-07-19 11:05:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3353 states have (on average 1.4995526394273784) internal successors, (5028), 3353 states have internal predecessors, (5028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:27,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 5028 transitions. [2022-07-19 11:05:27,844 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 5028 transitions. Word has length 237 [2022-07-19 11:05:27,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:27,844 INFO L495 AbstractCegarLoop]: Abstraction has 3354 states and 5028 transitions. [2022-07-19 11:05:27,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:27,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 5028 transitions. [2022-07-19 11:05:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-19 11:05:27,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:27,852 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:05:27,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-19 11:05:27,852 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:27,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:27,852 INFO L85 PathProgramCache]: Analyzing trace with hash -746542110, now seen corresponding path program 1 times [2022-07-19 11:05:27,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:27,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004754110] [2022-07-19 11:05:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:27,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-07-19 11:05:28,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:28,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004754110] [2022-07-19 11:05:28,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004754110] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:28,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:28,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:05:28,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521868286] [2022-07-19 11:05:28,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:28,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:05:28,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:28,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:05:28,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:28,038 INFO L87 Difference]: Start difference. First operand 3354 states and 5028 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:28,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:28,123 INFO L93 Difference]: Finished difference Result 7152 states and 10739 transitions. [2022-07-19 11:05:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:05:28,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2022-07-19 11:05:28,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:28,129 INFO L225 Difference]: With dead ends: 7152 [2022-07-19 11:05:28,130 INFO L226 Difference]: Without dead ends: 3821 [2022-07-19 11:05:28,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:28,133 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 146 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:28,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 575 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:05:28,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3821 states. [2022-07-19 11:05:28,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3821 to 3821. [2022-07-19 11:05:28,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3821 states, 3820 states have (on average 1.4989528795811518) internal successors, (5726), 3820 states have internal predecessors, (5726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:28,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3821 states to 3821 states and 5726 transitions. [2022-07-19 11:05:28,233 INFO L78 Accepts]: Start accepts. Automaton has 3821 states and 5726 transitions. Word has length 269 [2022-07-19 11:05:28,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:28,233 INFO L495 AbstractCegarLoop]: Abstraction has 3821 states and 5726 transitions. [2022-07-19 11:05:28,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:28,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3821 states and 5726 transitions. [2022-07-19 11:05:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-19 11:05:28,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:28,241 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 11:05:28,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-19 11:05:28,241 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:28,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:28,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2118349408, now seen corresponding path program 1 times [2022-07-19 11:05:28,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:28,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270899797] [2022-07-19 11:05:28,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:28,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 330 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-19 11:05:28,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:28,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270899797] [2022-07-19 11:05:28,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270899797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:28,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:28,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:05:28,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344319735] [2022-07-19 11:05:28,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:28,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:05:28,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:28,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:05:28,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:28,420 INFO L87 Difference]: Start difference. First operand 3821 states and 5726 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:28,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:28,535 INFO L93 Difference]: Finished difference Result 8058 states and 12093 transitions. [2022-07-19 11:05:28,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:05:28,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2022-07-19 11:05:28,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:28,543 INFO L225 Difference]: With dead ends: 8058 [2022-07-19 11:05:28,543 INFO L226 Difference]: Without dead ends: 4260 [2022-07-19 11:05:28,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:28,549 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 152 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:28,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 578 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 11:05:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states. [2022-07-19 11:05:28,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 4260. [2022-07-19 11:05:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4260 states, 4259 states have (on average 1.4982390232448932) internal successors, (6381), 4259 states have internal predecessors, (6381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:28,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4260 states to 4260 states and 6381 transitions. [2022-07-19 11:05:28,643 INFO L78 Accepts]: Start accepts. Automaton has 4260 states and 6381 transitions. Word has length 269 [2022-07-19 11:05:28,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:28,644 INFO L495 AbstractCegarLoop]: Abstraction has 4260 states and 6381 transitions. [2022-07-19 11:05:28,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:28,644 INFO L276 IsEmpty]: Start isEmpty. Operand 4260 states and 6381 transitions. [2022-07-19 11:05:28,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-07-19 11:05:28,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:28,654 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 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] [2022-07-19 11:05:28,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-19 11:05:28,654 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:28,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:28,655 INFO L85 PathProgramCache]: Analyzing trace with hash -113807666, now seen corresponding path program 1 times [2022-07-19 11:05:28,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:28,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028490152] [2022-07-19 11:05:28,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:28,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2022-07-19 11:05:28,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:28,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028490152] [2022-07-19 11:05:28,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028490152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:28,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:28,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:05:28,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288184226] [2022-07-19 11:05:28,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:28,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:05:28,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:28,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:05:28,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:28,888 INFO L87 Difference]: Start difference. First operand 4260 states and 6381 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:28,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:28,986 INFO L93 Difference]: Finished difference Result 8969 states and 13452 transitions. [2022-07-19 11:05:28,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:05:28,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-07-19 11:05:28,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:28,994 INFO L225 Difference]: With dead ends: 8969 [2022-07-19 11:05:28,994 INFO L226 Difference]: Without dead ends: 4732 [2022-07-19 11:05:28,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:29,000 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 154 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:29,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 372 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:05:29,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2022-07-19 11:05:29,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4732. [2022-07-19 11:05:29,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4732 states, 4731 states have (on average 1.4998943140984993) internal successors, (7096), 4731 states have internal predecessors, (7096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4732 states to 4732 states and 7096 transitions. [2022-07-19 11:05:29,083 INFO L78 Accepts]: Start accepts. Automaton has 4732 states and 7096 transitions. Word has length 344 [2022-07-19 11:05:29,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:29,084 INFO L495 AbstractCegarLoop]: Abstraction has 4732 states and 7096 transitions. [2022-07-19 11:05:29,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand 4732 states and 7096 transitions. [2022-07-19 11:05:29,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-07-19 11:05:29,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:29,095 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 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] [2022-07-19 11:05:29,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-19 11:05:29,096 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:29,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:29,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1102282041, now seen corresponding path program 1 times [2022-07-19 11:05:29,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:29,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828659964] [2022-07-19 11:05:29,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:29,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1443 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 942 trivial. 0 not checked. [2022-07-19 11:05:29,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:29,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828659964] [2022-07-19 11:05:29,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828659964] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:29,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:29,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 11:05:29,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216555384] [2022-07-19 11:05:29,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:29,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 11:05:29,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:29,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 11:05:29,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:29,344 INFO L87 Difference]: Start difference. First operand 4732 states and 7096 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:29,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:29,437 INFO L93 Difference]: Finished difference Result 5206 states and 7814 transitions. [2022-07-19 11:05:29,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 11:05:29,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 385 [2022-07-19 11:05:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:29,447 INFO L225 Difference]: With dead ends: 5206 [2022-07-19 11:05:29,447 INFO L226 Difference]: Without dead ends: 5204 [2022-07-19 11:05:29,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 11:05:29,455 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 155 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:29,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 371 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 11:05:29,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2022-07-19 11:05:29,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 5204. [2022-07-19 11:05:29,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 5203 states have (on average 1.5014414760714971) internal successors, (7812), 5203 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 7812 transitions. [2022-07-19 11:05:29,588 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 7812 transitions. Word has length 385 [2022-07-19 11:05:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:29,588 INFO L495 AbstractCegarLoop]: Abstraction has 5204 states and 7812 transitions. [2022-07-19 11:05:29,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:29,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 7812 transitions. [2022-07-19 11:05:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-07-19 11:05:29,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:29,598 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2022-07-19 11:05:29,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-19 11:05:29,599 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:29,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:29,599 INFO L85 PathProgramCache]: Analyzing trace with hash -904105078, now seen corresponding path program 1 times [2022-07-19 11:05:29,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:29,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219936899] [2022-07-19 11:05:29,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:29,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 717 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2022-07-19 11:05:29,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:29,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219936899] [2022-07-19 11:05:29,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219936899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:29,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:29,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 11:05:29,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264959781] [2022-07-19 11:05:29,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:29,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 11:05:29,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:29,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 11:05:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 11:05:29,807 INFO L87 Difference]: Start difference. First operand 5204 states and 7812 transitions. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:30,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:30,920 INFO L93 Difference]: Finished difference Result 11286 states and 16902 transitions. [2022-07-19 11:05:30,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 11:05:30,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 392 [2022-07-19 11:05:30,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:30,931 INFO L225 Difference]: With dead ends: 11286 [2022-07-19 11:05:30,932 INFO L226 Difference]: Without dead ends: 6105 [2022-07-19 11:05:30,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:30,938 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 69 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:30,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 659 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 11:05:30,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2022-07-19 11:05:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 5655. [2022-07-19 11:05:31,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5655 states, 5654 states have (on average 1.5022992571630704) internal successors, (8494), 5654 states have internal predecessors, (8494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:31,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5655 states to 5655 states and 8494 transitions. [2022-07-19 11:05:31,073 INFO L78 Accepts]: Start accepts. Automaton has 5655 states and 8494 transitions. Word has length 392 [2022-07-19 11:05:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:31,075 INFO L495 AbstractCegarLoop]: Abstraction has 5655 states and 8494 transitions. [2022-07-19 11:05:31,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:31,075 INFO L276 IsEmpty]: Start isEmpty. Operand 5655 states and 8494 transitions. [2022-07-19 11:05:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-07-19 11:05:31,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:31,086 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2022-07-19 11:05:31,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-19 11:05:31,087 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:31,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:31,087 INFO L85 PathProgramCache]: Analyzing trace with hash 42932808, now seen corresponding path program 1 times [2022-07-19 11:05:31,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:31,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106436219] [2022-07-19 11:05:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:31,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2022-07-19 11:05:31,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:31,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106436219] [2022-07-19 11:05:31,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106436219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 11:05:31,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 11:05:31,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 11:05:31,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628183026] [2022-07-19 11:05:31,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 11:05:31,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 11:05:31,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 11:05:31,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 11:05:31,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 11:05:31,737 INFO L87 Difference]: Start difference. First operand 5655 states and 8494 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:33,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:05:34,608 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 11:05:34,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 11:05:34,937 INFO L93 Difference]: Finished difference Result 11307 states and 16984 transitions. [2022-07-19 11:05:34,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 11:05:34,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 392 [2022-07-19 11:05:34,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 11:05:34,949 INFO L225 Difference]: With dead ends: 11307 [2022-07-19 11:05:34,949 INFO L226 Difference]: Without dead ends: 5655 [2022-07-19 11:05:34,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-19 11:05:34,956 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 7 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 11:05:34,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 695 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 11:05:34,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5655 states. [2022-07-19 11:05:35,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5655 to 5655. [2022-07-19 11:05:35,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5655 states, 5654 states have (on average 1.5021223912274495) internal successors, (8493), 5654 states have internal predecessors, (8493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:35,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5655 states to 5655 states and 8493 transitions. [2022-07-19 11:05:35,063 INFO L78 Accepts]: Start accepts. Automaton has 5655 states and 8493 transitions. Word has length 392 [2022-07-19 11:05:35,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 11:05:35,063 INFO L495 AbstractCegarLoop]: Abstraction has 5655 states and 8493 transitions. [2022-07-19 11:05:35,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 11:05:35,064 INFO L276 IsEmpty]: Start isEmpty. Operand 5655 states and 8493 transitions. [2022-07-19 11:05:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2022-07-19 11:05:35,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 11:05:35,073 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 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] [2022-07-19 11:05:35,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-19 11:05:35,074 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 11:05:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 11:05:35,075 INFO L85 PathProgramCache]: Analyzing trace with hash -729601146, now seen corresponding path program 1 times [2022-07-19 11:05:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 11:05:35,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233929435] [2022-07-19 11:05:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:35,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 11:05:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 737 proven. 556 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-19 11:05:36,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 11:05:36,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233929435] [2022-07-19 11:05:36,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233929435] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 11:05:36,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371659591] [2022-07-19 11:05:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 11:05:36,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 11:05:36,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 11:05:36,923 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) [2022-07-19 11:05:36,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 11:05:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 11:05:38,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 1966 conjuncts, 199 conjunts are in the unsatisfiable core [2022-07-19 11:05:38,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 11:05:38,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:38,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:41,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:05:41,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:00,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:00,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:00,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:00,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:00,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:00,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:00,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:00,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:00,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:00,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 11:06:00,824 INFO L244 Elim1Store]: Index analysis took 216 ms