./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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.06.i.cil-1.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 1fcf2e3f406244358dbdc63025b5201d61a26c4305d0f5c4a6ff65bb76c78282 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 23:51:53,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:51:53,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:51:53,436 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:51:53,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:51:53,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:51:53,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:51:53,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:51:53,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:51:53,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:51:53,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:51:53,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:51:53,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:51:53,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:51:53,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:51:53,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:51:53,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:51:53,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:51:53,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:51:53,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:51:53,465 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:51:53,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:51:53,466 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:51:53,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:51:53,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:51:53,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:51:53,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:51:53,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:51:53,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:51:53,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:51:53,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:51:53,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:51:53,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:51:53,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:51:53,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:51:53,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:51:53,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:51:53,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:51:53,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:51:53,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:51:53,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:51:53,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:51:53,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 23:51:53,498 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:51:53,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:51:53,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:51:53,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:51:53,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:51:53,501 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:51:53,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:51:53,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:51:53,502 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:51:53,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:51:53,503 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:51:53,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 23:51:53,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:51:53,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:51:53,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:51:53,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:51:53,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:51:53,504 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:51:53,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:51:53,504 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:51:53,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:51:53,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:51:53,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:51:53,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:51:53,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:51:53,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:51:53,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:51:53,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:51:53,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 23:51:53,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 23:51:53,507 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:51:53,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:51:53,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:51:53,507 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fcf2e3f406244358dbdc63025b5201d61a26c4305d0f5c4a6ff65bb76c78282 [2022-07-11 23:51:53,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:51:53,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:51:53,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:51:53,707 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:51:53,708 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:51:53,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-1.c [2022-07-11 23:51:53,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1a3503c4/77f9278b2d9b4974b02f6062530f23b8/FLAG676234b23 [2022-07-11 23:51:54,226 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:51:54,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.06.i.cil-1.c [2022-07-11 23:51:54,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1a3503c4/77f9278b2d9b4974b02f6062530f23b8/FLAG676234b23 [2022-07-11 23:51:54,732 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1a3503c4/77f9278b2d9b4974b02f6062530f23b8 [2022-07-11 23:51:54,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:51:54,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:51:54,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:51:54,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:51:54,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:51:54,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:51:54" (1/1) ... [2022-07-11 23:51:54,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69dea05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:54, skipping insertion in model container [2022-07-11 23:51:54,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:51:54" (1/1) ... [2022-07-11 23:51:54,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:51:54,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:51:55,090 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.06.i.cil-1.c[78520,78533] [2022-07-11 23:51:55,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:51:55,107 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:51:55,216 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.06.i.cil-1.c[78520,78533] [2022-07-11 23:51:55,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:51:55,234 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:51:55,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:55 WrapperNode [2022-07-11 23:51:55,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:51:55,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:51:55,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:51:55,237 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:51:55,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:55" (1/1) ... [2022-07-11 23:51:55,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:55" (1/1) ... [2022-07-11 23:51:55,317 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 815 [2022-07-11 23:51:55,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:51:55,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:51:55,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:51:55,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:51:55,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:55" (1/1) ... [2022-07-11 23:51:55,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:55" (1/1) ... [2022-07-11 23:51:55,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:55" (1/1) ... [2022-07-11 23:51:55,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:55" (1/1) ... [2022-07-11 23:51:55,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:55" (1/1) ... [2022-07-11 23:51:55,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:55" (1/1) ... [2022-07-11 23:51:55,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:55" (1/1) ... [2022-07-11 23:51:55,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:51:55,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:51:55,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:51:55,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:51:55,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:55" (1/1) ... [2022-07-11 23:51:55,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:51:55,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:51:55,427 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) [2022-07-11 23:51:55,447 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 [2022-07-11 23:51:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:51:55,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-11 23:51:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 23:51:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 23:51:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-11 23:51:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 23:51:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-11 23:51:55,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:51:55,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:51:55,557 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:51:55,558 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:51:55,569 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:51:57,761 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-11 23:51:57,761 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-11 23:51:57,761 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:51:57,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:51:57,767 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-11 23:51:57,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:51:57 BoogieIcfgContainer [2022-07-11 23:51:57,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:51:57,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:51:57,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:51:57,772 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:51:57,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:51:54" (1/3) ... [2022-07-11 23:51:57,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f888e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:51:57, skipping insertion in model container [2022-07-11 23:51:57,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:51:55" (2/3) ... [2022-07-11 23:51:57,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f888e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:51:57, skipping insertion in model container [2022-07-11 23:51:57,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:51:57" (3/3) ... [2022-07-11 23:51:57,774 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.06.i.cil-1.c [2022-07-11 23:51:57,783 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:51:57,783 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:51:57,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:51:57,818 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@5abfc148, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e8b0623 [2022-07-11 23:51:57,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:51:57,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 159 states have (on average 1.7358490566037736) internal successors, (276), 160 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:51:57,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-11 23:51:57,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:51:57,852 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, 1] [2022-07-11 23:51:57,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:51:57,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:51:57,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2069453275, now seen corresponding path program 1 times [2022-07-11 23:51:57,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:51:57,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689106479] [2022-07-11 23:51:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:51:57,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:51:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:51:58,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:51:58,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:51:58,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689106479] [2022-07-11 23:51:58,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689106479] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:51:58,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:51:58,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:51:58,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415317954] [2022-07-11 23:51:58,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:51:58,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:51:58,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:51:58,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:51:58,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:51:58,322 INFO L87 Difference]: Start difference. First operand has 161 states, 159 states have (on average 1.7358490566037736) internal successors, (276), 160 states have internal predecessors, (276), 0 states have call successors, (0), 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 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:51:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:51:59,043 INFO L93 Difference]: Finished difference Result 452 states and 778 transitions. [2022-07-11 23:51:59,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:51:59,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-07-11 23:51:59,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:51:59,053 INFO L225 Difference]: With dead ends: 452 [2022-07-11 23:51:59,053 INFO L226 Difference]: Without dead ends: 276 [2022-07-11 23:51:59,059 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 [2022-07-11 23:51:59,061 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 174 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:51:59,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 507 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:51:59,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-11 23:51:59,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 188. [2022-07-11 23:51:59,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.6310160427807487) internal successors, (305), 187 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:51:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 305 transitions. [2022-07-11 23:51:59,107 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 305 transitions. Word has length 46 [2022-07-11 23:51:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:51:59,108 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 305 transitions. [2022-07-11 23:51:59,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:51:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 305 transitions. [2022-07-11 23:51:59,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-11 23:51:59,110 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:51:59,110 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, 1, 1] [2022-07-11 23:51:59,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 23:51:59,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:51:59,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:51:59,111 INFO L85 PathProgramCache]: Analyzing trace with hash 413309894, now seen corresponding path program 1 times [2022-07-11 23:51:59,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:51:59,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358276676] [2022-07-11 23:51:59,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:51:59,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:51:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:51:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:51:59,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:51:59,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358276676] [2022-07-11 23:51:59,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358276676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:51:59,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:51:59,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:51:59,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880868072] [2022-07-11 23:51:59,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:51:59,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:51:59,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:51:59,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:51:59,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:51:59,207 INFO L87 Difference]: Start difference. First operand 188 states and 305 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:51:59,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:51:59,867 INFO L93 Difference]: Finished difference Result 394 states and 637 transitions. [2022-07-11 23:51:59,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:51:59,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-07-11 23:51:59,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:51:59,869 INFO L225 Difference]: With dead ends: 394 [2022-07-11 23:51:59,869 INFO L226 Difference]: Without dead ends: 216 [2022-07-11 23:51:59,870 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 [2022-07-11 23:51:59,871 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 22 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 535 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 [2022-07-11 23:51:59,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 535 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:51:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-11 23:51:59,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 199. [2022-07-11 23:51:59,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.6363636363636365) internal successors, (324), 198 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:51:59,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 324 transitions. [2022-07-11 23:51:59,880 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 324 transitions. Word has length 47 [2022-07-11 23:51:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:51:59,880 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 324 transitions. [2022-07-11 23:51:59,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:51:59,881 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 324 transitions. [2022-07-11 23:51:59,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-11 23:51:59,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:51:59,882 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, 1, 1] [2022-07-11 23:51:59,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-11 23:51:59,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:51:59,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:51:59,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1658840653, now seen corresponding path program 1 times [2022-07-11 23:51:59,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:51:59,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989525097] [2022-07-11 23:51:59,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:51:59,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:51:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:51:59,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:51:59,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:51:59,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989525097] [2022-07-11 23:51:59,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989525097] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:51:59,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:51:59,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:51:59,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871491456] [2022-07-11 23:51:59,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:51:59,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:51:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:51:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:51:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:51:59,998 INFO L87 Difference]: Start difference. First operand 199 states and 324 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) [2022-07-11 23:52:00,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:00,555 INFO L93 Difference]: Finished difference Result 543 states and 889 transitions. [2022-07-11 23:52:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:00,555 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 [2022-07-11 23:52:00,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:00,557 INFO L225 Difference]: With dead ends: 543 [2022-07-11 23:52:00,557 INFO L226 Difference]: Without dead ends: 365 [2022-07-11 23:52:00,558 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 [2022-07-11 23:52:00,558 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 163 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:00,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 720 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:52:00,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2022-07-11 23:52:00,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 231. [2022-07-11 23:52:00,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.6304347826086956) internal successors, (375), 230 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) [2022-07-11 23:52:00,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 375 transitions. [2022-07-11 23:52:00,567 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 375 transitions. Word has length 60 [2022-07-11 23:52:00,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:00,567 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 375 transitions. [2022-07-11 23:52:00,567 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) [2022-07-11 23:52:00,568 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 375 transitions. [2022-07-11 23:52:00,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-11 23:52:00,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:00,569 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, 1, 1] [2022-07-11 23:52:00,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-11 23:52:00,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:00,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:00,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1244365854, now seen corresponding path program 1 times [2022-07-11 23:52:00,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:00,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161293496] [2022-07-11 23:52:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:00,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:00,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:00,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161293496] [2022-07-11 23:52:00,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161293496] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:00,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:00,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:00,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295565758] [2022-07-11 23:52:00,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:00,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:00,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:00,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:00,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:00,647 INFO L87 Difference]: Start difference. First operand 231 states and 375 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) [2022-07-11 23:52:01,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:01,449 INFO L93 Difference]: Finished difference Result 551 states and 892 transitions. [2022-07-11 23:52:01,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:01,450 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 [2022-07-11 23:52:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:01,451 INFO L225 Difference]: With dead ends: 551 [2022-07-11 23:52:01,451 INFO L226 Difference]: Without dead ends: 341 [2022-07-11 23:52:01,452 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 [2022-07-11 23:52:01,452 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 168 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:01,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 400 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-11 23:52:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-07-11 23:52:01,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 231. [2022-07-11 23:52:01,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.6130434782608696) internal successors, (371), 230 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) [2022-07-11 23:52:01,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 371 transitions. [2022-07-11 23:52:01,460 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 371 transitions. Word has length 61 [2022-07-11 23:52:01,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:01,460 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 371 transitions. [2022-07-11 23:52:01,460 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) [2022-07-11 23:52:01,460 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 371 transitions. [2022-07-11 23:52:01,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-11 23:52:01,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:01,462 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, 1, 1] [2022-07-11 23:52:01,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-11 23:52:01,462 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:01,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:01,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2082376626, now seen corresponding path program 1 times [2022-07-11 23:52:01,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:01,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108916561] [2022-07-11 23:52:01,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:01,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:01,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:01,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:01,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108916561] [2022-07-11 23:52:01,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108916561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:01,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:01,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:01,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853973405] [2022-07-11 23:52:01,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:01,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:01,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:01,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:01,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:01,541 INFO L87 Difference]: Start difference. First operand 231 states and 371 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) [2022-07-11 23:52:02,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:02,064 INFO L93 Difference]: Finished difference Result 457 states and 731 transitions. [2022-07-11 23:52:02,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:02,064 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 [2022-07-11 23:52:02,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:02,065 INFO L225 Difference]: With dead ends: 457 [2022-07-11 23:52:02,065 INFO L226 Difference]: Without dead ends: 247 [2022-07-11 23:52:02,066 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 [2022-07-11 23:52:02,066 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 26 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:02,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 539 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:52:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-07-11 23:52:02,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 231. [2022-07-11 23:52:02,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.608695652173913) internal successors, (370), 230 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 370 transitions. [2022-07-11 23:52:02,072 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 370 transitions. Word has length 61 [2022-07-11 23:52:02,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:02,072 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 370 transitions. [2022-07-11 23:52:02,072 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) [2022-07-11 23:52:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 370 transitions. [2022-07-11 23:52:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-11 23:52:02,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:02,073 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, 1, 1] [2022-07-11 23:52:02,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-11 23:52:02,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:02,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:02,073 INFO L85 PathProgramCache]: Analyzing trace with hash -758059831, now seen corresponding path program 1 times [2022-07-11 23:52:02,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:02,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197534581] [2022-07-11 23:52:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:02,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:02,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:02,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197534581] [2022-07-11 23:52:02,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197534581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:02,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:02,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22754267] [2022-07-11 23:52:02,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:02,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:02,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:02,196 INFO L87 Difference]: Start difference. First operand 231 states and 370 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) [2022-07-11 23:52:03,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:03,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:03,910 INFO L93 Difference]: Finished difference Result 456 states and 729 transitions. [2022-07-11 23:52:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:03,911 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 [2022-07-11 23:52:03,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:03,912 INFO L225 Difference]: With dead ends: 456 [2022-07-11 23:52:03,912 INFO L226 Difference]: Without dead ends: 246 [2022-07-11 23:52:03,912 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 [2022-07-11 23:52:03,913 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 19 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:03,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 541 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-11 23:52:03,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-11 23:52:03,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 231. [2022-07-11 23:52:03,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.6043478260869566) internal successors, (369), 230 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:03,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 369 transitions. [2022-07-11 23:52:03,918 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 369 transitions. Word has length 61 [2022-07-11 23:52:03,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:03,918 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 369 transitions. [2022-07-11 23:52:03,919 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) [2022-07-11 23:52:03,919 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 369 transitions. [2022-07-11 23:52:03,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-11 23:52:03,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:03,919 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, 1, 1] [2022-07-11 23:52:03,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-11 23:52:03,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:03,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:03,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1707407991, now seen corresponding path program 1 times [2022-07-11 23:52:03,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:03,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751954116] [2022-07-11 23:52:03,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:03,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:03,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:03,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751954116] [2022-07-11 23:52:03,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751954116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:03,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:03,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:03,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345927847] [2022-07-11 23:52:03,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:03,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:03,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:03,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:03,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:03,991 INFO L87 Difference]: Start difference. First operand 231 states and 369 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) [2022-07-11 23:52:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:04,709 INFO L93 Difference]: Finished difference Result 551 states and 883 transitions. [2022-07-11 23:52:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:04,709 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 [2022-07-11 23:52:04,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:04,711 INFO L225 Difference]: With dead ends: 551 [2022-07-11 23:52:04,711 INFO L226 Difference]: Without dead ends: 341 [2022-07-11 23:52:04,711 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 [2022-07-11 23:52:04,712 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 161 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 400 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 [2022-07-11 23:52:04,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 400 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:52:04,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-07-11 23:52:04,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 232. [2022-07-11 23:52:04,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.593073593073593) internal successors, (368), 231 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 368 transitions. [2022-07-11 23:52:04,717 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 368 transitions. Word has length 61 [2022-07-11 23:52:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:04,717 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 368 transitions. [2022-07-11 23:52:04,718 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) [2022-07-11 23:52:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 368 transitions. [2022-07-11 23:52:04,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-11 23:52:04,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:04,718 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, 1, 1] [2022-07-11 23:52:04,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-11 23:52:04,719 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:04,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:04,719 INFO L85 PathProgramCache]: Analyzing trace with hash 525720246, now seen corresponding path program 1 times [2022-07-11 23:52:04,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:04,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269321802] [2022-07-11 23:52:04,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:04,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:04,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:04,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269321802] [2022-07-11 23:52:04,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269321802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:04,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:04,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:04,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724006418] [2022-07-11 23:52:04,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:04,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:04,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:04,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:04,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:04,799 INFO L87 Difference]: Start difference. First operand 232 states and 368 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) [2022-07-11 23:52:05,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:05,773 INFO L93 Difference]: Finished difference Result 456 states and 725 transitions. [2022-07-11 23:52:05,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:05,774 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 [2022-07-11 23:52:05,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:05,775 INFO L225 Difference]: With dead ends: 456 [2022-07-11 23:52:05,775 INFO L226 Difference]: Without dead ends: 245 [2022-07-11 23:52:05,776 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 [2022-07-11 23:52:05,776 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 22 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:05,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 545 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:52:05,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-11 23:52:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 232. [2022-07-11 23:52:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5887445887445888) internal successors, (367), 231 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) [2022-07-11 23:52:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 367 transitions. [2022-07-11 23:52:05,782 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 367 transitions. Word has length 62 [2022-07-11 23:52:05,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:05,782 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 367 transitions. [2022-07-11 23:52:05,782 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) [2022-07-11 23:52:05,782 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 367 transitions. [2022-07-11 23:52:05,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-11 23:52:05,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:05,783 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, 1, 1] [2022-07-11 23:52:05,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-11 23:52:05,783 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:05,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:05,783 INFO L85 PathProgramCache]: Analyzing trace with hash -524784073, now seen corresponding path program 1 times [2022-07-11 23:52:05,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:05,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858216894] [2022-07-11 23:52:05,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:05,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:05,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:05,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:05,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858216894] [2022-07-11 23:52:05,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858216894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:05,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:05,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:05,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347510100] [2022-07-11 23:52:05,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:05,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:05,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:05,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:05,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:05,870 INFO L87 Difference]: Start difference. First operand 232 states and 367 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:06,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:06,736 INFO L93 Difference]: Finished difference Result 456 states and 724 transitions. [2022-07-11 23:52:06,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:06,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-07-11 23:52:06,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:06,739 INFO L225 Difference]: With dead ends: 456 [2022-07-11 23:52:06,739 INFO L226 Difference]: Without dead ends: 245 [2022-07-11 23:52:06,740 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 [2022-07-11 23:52:06,740 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 20 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 545 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 [2022-07-11 23:52:06,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 545 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-11 23:52:06,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-11 23:52:06,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 232. [2022-07-11 23:52:06,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5844155844155845) internal successors, (366), 231 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 366 transitions. [2022-07-11 23:52:06,745 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 366 transitions. Word has length 63 [2022-07-11 23:52:06,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:06,745 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 366 transitions. [2022-07-11 23:52:06,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:06,746 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 366 transitions. [2022-07-11 23:52:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-11 23:52:06,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:06,746 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, 1, 1] [2022-07-11 23:52:06,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-11 23:52:06,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:06,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:06,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1230523611, now seen corresponding path program 1 times [2022-07-11 23:52:06,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:06,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215113786] [2022-07-11 23:52:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:06,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:06,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:06,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215113786] [2022-07-11 23:52:06,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215113786] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:06,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:06,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:06,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398664240] [2022-07-11 23:52:06,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:06,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:06,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:06,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:06,815 INFO L87 Difference]: Start difference. First operand 232 states and 366 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:07,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:07,334 INFO L93 Difference]: Finished difference Result 446 states and 710 transitions. [2022-07-11 23:52:07,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:07,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-07-11 23:52:07,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:07,336 INFO L225 Difference]: With dead ends: 446 [2022-07-11 23:52:07,336 INFO L226 Difference]: Without dead ends: 235 [2022-07-11 23:52:07,336 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 [2022-07-11 23:52:07,337 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 11 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:07,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 559 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:52:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-07-11 23:52:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 232. [2022-07-11 23:52:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.58008658008658) internal successors, (365), 231 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 365 transitions. [2022-07-11 23:52:07,341 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 365 transitions. Word has length 64 [2022-07-11 23:52:07,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:07,341 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 365 transitions. [2022-07-11 23:52:07,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 365 transitions. [2022-07-11 23:52:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-11 23:52:07,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:07,341 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, 1, 1] [2022-07-11 23:52:07,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-11 23:52:07,341 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:07,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:07,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1630675011, now seen corresponding path program 1 times [2022-07-11 23:52:07,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:07,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057117863] [2022-07-11 23:52:07,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:07,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:07,430 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:07,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:07,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057117863] [2022-07-11 23:52:07,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057117863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:07,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:07,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:07,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732694597] [2022-07-11 23:52:07,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:07,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:07,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:07,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:07,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:07,432 INFO L87 Difference]: Start difference. First operand 232 states and 365 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:08,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:08,565 INFO L93 Difference]: Finished difference Result 483 states and 765 transitions. [2022-07-11 23:52:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:08,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-07-11 23:52:08,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:08,567 INFO L225 Difference]: With dead ends: 483 [2022-07-11 23:52:08,567 INFO L226 Difference]: Without dead ends: 272 [2022-07-11 23:52:08,567 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 [2022-07-11 23:52:08,567 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 31 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:08,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 563 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-11 23:52:08,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-07-11 23:52:08,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 254. [2022-07-11 23:52:08,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5810276679841897) internal successors, (400), 253 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:08,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 400 transitions. [2022-07-11 23:52:08,572 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 400 transitions. Word has length 64 [2022-07-11 23:52:08,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:08,572 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 400 transitions. [2022-07-11 23:52:08,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:08,572 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 400 transitions. [2022-07-11 23:52:08,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-11 23:52:08,573 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:08,573 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, 1, 1] [2022-07-11 23:52:08,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-11 23:52:08,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:08,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:08,573 INFO L85 PathProgramCache]: Analyzing trace with hash 559542639, now seen corresponding path program 1 times [2022-07-11 23:52:08,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:08,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661663871] [2022-07-11 23:52:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:08,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:08,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:08,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661663871] [2022-07-11 23:52:08,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661663871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:08,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:08,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:08,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954771386] [2022-07-11 23:52:08,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:08,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:08,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:08,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:08,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:08,642 INFO L87 Difference]: Start difference. First operand 254 states and 400 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) [2022-07-11 23:52:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:09,377 INFO L93 Difference]: Finished difference Result 596 states and 947 transitions. [2022-07-11 23:52:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:09,378 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 [2022-07-11 23:52:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:09,379 INFO L225 Difference]: With dead ends: 596 [2022-07-11 23:52:09,379 INFO L226 Difference]: Without dead ends: 363 [2022-07-11 23:52:09,379 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 [2022-07-11 23:52:09,380 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 166 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 400 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 [2022-07-11 23:52:09,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 400 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:52:09,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-07-11 23:52:09,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 254. [2022-07-11 23:52:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.565217391304348) internal successors, (396), 253 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 396 transitions. [2022-07-11 23:52:09,388 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 396 transitions. Word has length 78 [2022-07-11 23:52:09,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:09,388 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 396 transitions. [2022-07-11 23:52:09,389 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) [2022-07-11 23:52:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 396 transitions. [2022-07-11 23:52:09,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-11 23:52:09,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:09,389 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, 1, 1] [2022-07-11 23:52:09,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-11 23:52:09,390 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:09,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:09,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2014073478, now seen corresponding path program 1 times [2022-07-11 23:52:09,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:09,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015412375] [2022-07-11 23:52:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:09,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:09,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:09,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015412375] [2022-07-11 23:52:09,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015412375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:09,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:09,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:09,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106138] [2022-07-11 23:52:09,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:09,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:09,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:09,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:09,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:09,494 INFO L87 Difference]: Start difference. First operand 254 states and 396 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) [2022-07-11 23:52:10,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:10,136 INFO L93 Difference]: Finished difference Result 504 states and 790 transitions. [2022-07-11 23:52:10,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:10,136 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 [2022-07-11 23:52:10,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:10,137 INFO L225 Difference]: With dead ends: 504 [2022-07-11 23:52:10,137 INFO L226 Difference]: Without dead ends: 271 [2022-07-11 23:52:10,138 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 [2022-07-11 23:52:10,138 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 33 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:10,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 565 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:52:10,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-11 23:52:10,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 254. [2022-07-11 23:52:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5612648221343874) internal successors, (395), 253 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:10,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 395 transitions. [2022-07-11 23:52:10,143 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 395 transitions. Word has length 78 [2022-07-11 23:52:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:10,143 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 395 transitions. [2022-07-11 23:52:10,143 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) [2022-07-11 23:52:10,143 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 395 transitions. [2022-07-11 23:52:10,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-11 23:52:10,143 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:10,143 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, 1, 1] [2022-07-11 23:52:10,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-11 23:52:10,144 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:10,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:10,144 INFO L85 PathProgramCache]: Analyzing trace with hash 562506905, now seen corresponding path program 1 times [2022-07-11 23:52:10,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:10,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806776234] [2022-07-11 23:52:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:10,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:10,216 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:10,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:10,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806776234] [2022-07-11 23:52:10,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806776234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:10,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:10,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:10,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914964983] [2022-07-11 23:52:10,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:10,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:10,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:10,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:10,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:10,218 INFO L87 Difference]: Start difference. First operand 254 states and 395 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) [2022-07-11 23:52:11,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:12,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:12,038 INFO L93 Difference]: Finished difference Result 596 states and 937 transitions. [2022-07-11 23:52:12,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:12,039 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 [2022-07-11 23:52:12,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:12,040 INFO L225 Difference]: With dead ends: 596 [2022-07-11 23:52:12,040 INFO L226 Difference]: Without dead ends: 363 [2022-07-11 23:52:12,040 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 [2022-07-11 23:52:12,041 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 164 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:12,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 400 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-11 23:52:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-07-11 23:52:12,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 254. [2022-07-11 23:52:12,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5454545454545454) internal successors, (391), 253 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 391 transitions. [2022-07-11 23:52:12,046 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 391 transitions. Word has length 79 [2022-07-11 23:52:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:12,046 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 391 transitions. [2022-07-11 23:52:12,046 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) [2022-07-11 23:52:12,046 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 391 transitions. [2022-07-11 23:52:12,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-11 23:52:12,046 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:12,047 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, 1, 1] [2022-07-11 23:52:12,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-11 23:52:12,047 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:12,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:12,047 INFO L85 PathProgramCache]: Analyzing trace with hash 615602356, now seen corresponding path program 1 times [2022-07-11 23:52:12,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:12,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757201306] [2022-07-11 23:52:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:12,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:12,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:12,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757201306] [2022-07-11 23:52:12,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757201306] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:12,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:12,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:12,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317231416] [2022-07-11 23:52:12,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:12,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:12,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:12,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:12,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:12,139 INFO L87 Difference]: Start difference. First operand 254 states and 391 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:12,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:12,902 INFO L93 Difference]: Finished difference Result 596 states and 929 transitions. [2022-07-11 23:52:12,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:12,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-07-11 23:52:12,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:12,903 INFO L225 Difference]: With dead ends: 596 [2022-07-11 23:52:12,903 INFO L226 Difference]: Without dead ends: 363 [2022-07-11 23:52:12,904 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 [2022-07-11 23:52:12,904 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 162 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 400 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 [2022-07-11 23:52:12,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 400 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:52:12,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-07-11 23:52:12,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 254. [2022-07-11 23:52:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5296442687747036) internal successors, (387), 253 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 387 transitions. [2022-07-11 23:52:12,909 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 387 transitions. Word has length 80 [2022-07-11 23:52:12,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:12,909 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 387 transitions. [2022-07-11 23:52:12,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:12,909 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 387 transitions. [2022-07-11 23:52:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-11 23:52:12,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:12,910 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, 1, 1] [2022-07-11 23:52:12,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-11 23:52:12,910 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:12,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:12,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2072202754, now seen corresponding path program 1 times [2022-07-11 23:52:12,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:12,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703777358] [2022-07-11 23:52:12,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:12,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:52:12,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:12,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703777358] [2022-07-11 23:52:12,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703777358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:12,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:12,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:12,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243452178] [2022-07-11 23:52:12,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:12,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:12,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:12,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:12,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:12,980 INFO L87 Difference]: Start difference. First operand 254 states and 387 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:13,506 INFO L93 Difference]: Finished difference Result 586 states and 908 transitions. [2022-07-11 23:52:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:13,507 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-07-11 23:52:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:13,508 INFO L225 Difference]: With dead ends: 586 [2022-07-11 23:52:13,508 INFO L226 Difference]: Without dead ends: 353 [2022-07-11 23:52:13,508 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 [2022-07-11 23:52:13,509 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 153 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 420 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 [2022-07-11 23:52:13,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 420 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:52:13,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-07-11 23:52:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 254. [2022-07-11 23:52:13,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 1.5138339920948616) internal successors, (383), 253 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 383 transitions. [2022-07-11 23:52:13,514 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 383 transitions. Word has length 81 [2022-07-11 23:52:13,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:13,514 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 383 transitions. [2022-07-11 23:52:13,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 383 transitions. [2022-07-11 23:52:13,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-11 23:52:13,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:13,515 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, 1, 1] [2022-07-11 23:52:13,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-11 23:52:13,515 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:13,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:13,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1218231285, now seen corresponding path program 1 times [2022-07-11 23:52:13,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:13,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695222482] [2022-07-11 23:52:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:13,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:52:13,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:13,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695222482] [2022-07-11 23:52:13,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695222482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:13,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:13,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:13,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742684944] [2022-07-11 23:52:13,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:13,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:13,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:13,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:13,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:13,595 INFO L87 Difference]: Start difference. First operand 254 states and 383 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) [2022-07-11 23:52:14,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:14,524 INFO L93 Difference]: Finished difference Result 586 states and 900 transitions. [2022-07-11 23:52:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:14,525 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 86 [2022-07-11 23:52:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:14,526 INFO L225 Difference]: With dead ends: 586 [2022-07-11 23:52:14,526 INFO L226 Difference]: Without dead ends: 353 [2022-07-11 23:52:14,526 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 [2022-07-11 23:52:14,527 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 127 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:14,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 446 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-11 23:52:14,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-07-11 23:52:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 277. [2022-07-11 23:52:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.5507246376811594) internal successors, (428), 276 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 428 transitions. [2022-07-11 23:52:14,532 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 428 transitions. Word has length 86 [2022-07-11 23:52:14,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:14,532 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 428 transitions. [2022-07-11 23:52:14,532 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) [2022-07-11 23:52:14,533 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 428 transitions. [2022-07-11 23:52:14,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-11 23:52:14,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:14,533 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, 1, 1] [2022-07-11 23:52:14,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-11 23:52:14,534 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:14,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:14,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1323743922, now seen corresponding path program 1 times [2022-07-11 23:52:14,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:14,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147170595] [2022-07-11 23:52:14,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:14,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:52:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:14,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147170595] [2022-07-11 23:52:14,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147170595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:14,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:14,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:14,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482610370] [2022-07-11 23:52:14,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:14,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:14,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:14,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:14,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:14,608 INFO L87 Difference]: Start difference. First operand 277 states and 428 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) [2022-07-11 23:52:16,151 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:16,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:16,366 INFO L93 Difference]: Finished difference Result 623 states and 970 transitions. [2022-07-11 23:52:16,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:16,367 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 114 [2022-07-11 23:52:16,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:16,368 INFO L225 Difference]: With dead ends: 623 [2022-07-11 23:52:16,368 INFO L226 Difference]: Without dead ends: 367 [2022-07-11 23:52:16,368 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 [2022-07-11 23:52:16,369 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 90 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:16,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 541 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-11 23:52:16,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-07-11 23:52:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 311. [2022-07-11 23:52:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.5516129032258064) internal successors, (481), 310 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:16,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 481 transitions. [2022-07-11 23:52:16,374 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 481 transitions. Word has length 114 [2022-07-11 23:52:16,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:16,374 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 481 transitions. [2022-07-11 23:52:16,374 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) [2022-07-11 23:52:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 481 transitions. [2022-07-11 23:52:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-11 23:52:16,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:16,375 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, 1, 1] [2022-07-11 23:52:16,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-11 23:52:16,375 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:16,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash 356393268, now seen corresponding path program 1 times [2022-07-11 23:52:16,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:16,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030441188] [2022-07-11 23:52:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:16,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:16,481 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:52:16,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:16,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030441188] [2022-07-11 23:52:16,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030441188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:16,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:16,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:16,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740900942] [2022-07-11 23:52:16,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:16,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:16,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:16,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:16,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:16,483 INFO L87 Difference]: Start difference. First operand 311 states and 481 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) [2022-07-11 23:52:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:17,070 INFO L93 Difference]: Finished difference Result 753 states and 1178 transitions. [2022-07-11 23:52:17,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:17,071 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 114 [2022-07-11 23:52:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:17,073 INFO L225 Difference]: With dead ends: 753 [2022-07-11 23:52:17,073 INFO L226 Difference]: Without dead ends: 463 [2022-07-11 23:52:17,073 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 [2022-07-11 23:52:17,074 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 133 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:17,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 430 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:52:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-07-11 23:52:17,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 341. [2022-07-11 23:52:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.5588235294117647) internal successors, (530), 340 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 530 transitions. [2022-07-11 23:52:17,080 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 530 transitions. Word has length 114 [2022-07-11 23:52:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:17,080 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 530 transitions. [2022-07-11 23:52:17,080 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) [2022-07-11 23:52:17,080 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 530 transitions. [2022-07-11 23:52:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-11 23:52:17,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:17,081 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, 1, 1] [2022-07-11 23:52:17,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-11 23:52:17,082 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:17,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:17,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1153570057, now seen corresponding path program 1 times [2022-07-11 23:52:17,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:17,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567781459] [2022-07-11 23:52:17,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:17,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:17,153 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:52:17,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:17,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567781459] [2022-07-11 23:52:17,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567781459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:17,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:17,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325450510] [2022-07-11 23:52:17,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:17,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:17,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:17,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:17,155 INFO L87 Difference]: Start difference. First operand 341 states and 530 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) [2022-07-11 23:52:18,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:18,418 INFO L93 Difference]: Finished difference Result 777 states and 1213 transitions. [2022-07-11 23:52:18,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:18,418 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 120 [2022-07-11 23:52:18,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:18,419 INFO L225 Difference]: With dead ends: 777 [2022-07-11 23:52:18,419 INFO L226 Difference]: Without dead ends: 457 [2022-07-11 23:52:18,420 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 [2022-07-11 23:52:18,420 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 129 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:18,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 418 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:52:18,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-07-11 23:52:18,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 378. [2022-07-11 23:52:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 377 states have (on average 1.5623342175066313) internal successors, (589), 377 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:18,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 589 transitions. [2022-07-11 23:52:18,426 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 589 transitions. Word has length 120 [2022-07-11 23:52:18,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:18,426 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 589 transitions. [2022-07-11 23:52:18,426 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) [2022-07-11 23:52:18,426 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 589 transitions. [2022-07-11 23:52:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-11 23:52:18,427 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:18,427 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, 1, 1] [2022-07-11 23:52:18,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-11 23:52:18,428 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:18,428 INFO L85 PathProgramCache]: Analyzing trace with hash 629876074, now seen corresponding path program 1 times [2022-07-11 23:52:18,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:18,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553615604] [2022-07-11 23:52:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:18,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:52:18,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:18,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553615604] [2022-07-11 23:52:18,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553615604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:18,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:18,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:18,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063874243] [2022-07-11 23:52:18,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:18,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:18,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:18,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:18,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:18,525 INFO L87 Difference]: Start difference. First operand 378 states and 589 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:18,980 INFO L93 Difference]: Finished difference Result 822 states and 1286 transitions. [2022-07-11 23:52:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:18,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 121 [2022-07-11 23:52:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:18,982 INFO L225 Difference]: With dead ends: 822 [2022-07-11 23:52:18,982 INFO L226 Difference]: Without dead ends: 465 [2022-07-11 23:52:18,982 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 [2022-07-11 23:52:18,983 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 79 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:18,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 543 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:52:18,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2022-07-11 23:52:18,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 418. [2022-07-11 23:52:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 1.5635491606714629) internal successors, (652), 417 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 652 transitions. [2022-07-11 23:52:18,989 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 652 transitions. Word has length 121 [2022-07-11 23:52:18,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:18,989 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 652 transitions. [2022-07-11 23:52:18,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 652 transitions. [2022-07-11 23:52:18,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-11 23:52:18,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:18,990 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, 1, 1] [2022-07-11 23:52:18,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-11 23:52:18,991 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:18,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:18,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1468909736, now seen corresponding path program 1 times [2022-07-11 23:52:18,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:18,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473388755] [2022-07-11 23:52:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:18,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-11 23:52:19,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:19,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473388755] [2022-07-11 23:52:19,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473388755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:19,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:19,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:19,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138535325] [2022-07-11 23:52:19,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:19,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:19,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:19,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:19,084 INFO L87 Difference]: Start difference. First operand 418 states and 652 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:19,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:19,672 INFO L93 Difference]: Finished difference Result 852 states and 1333 transitions. [2022-07-11 23:52:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:19,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 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 121 [2022-07-11 23:52:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:19,674 INFO L225 Difference]: With dead ends: 852 [2022-07-11 23:52:19,674 INFO L226 Difference]: Without dead ends: 455 [2022-07-11 23:52:19,674 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 [2022-07-11 23:52:19,675 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 28 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:19,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 643 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:52:19,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-07-11 23:52:19,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 442. [2022-07-11 23:52:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.5578231292517006) internal successors, (687), 441 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:19,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 687 transitions. [2022-07-11 23:52:19,681 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 687 transitions. Word has length 121 [2022-07-11 23:52:19,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:19,682 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 687 transitions. [2022-07-11 23:52:19,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:19,682 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 687 transitions. [2022-07-11 23:52:19,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-11 23:52:19,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:19,683 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, 1, 1] [2022-07-11 23:52:19,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-11 23:52:19,683 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:19,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash -191058589, now seen corresponding path program 1 times [2022-07-11 23:52:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:19,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951884231] [2022-07-11 23:52:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:19,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:52:19,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:19,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951884231] [2022-07-11 23:52:19,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951884231] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:19,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:19,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:19,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461873533] [2022-07-11 23:52:19,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:19,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:19,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:19,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:19,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:19,757 INFO L87 Difference]: Start difference. First operand 442 states and 687 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:20,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:20,726 INFO L93 Difference]: Finished difference Result 901 states and 1403 transitions. [2022-07-11 23:52:20,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:20,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 128 [2022-07-11 23:52:20,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:20,728 INFO L225 Difference]: With dead ends: 901 [2022-07-11 23:52:20,728 INFO L226 Difference]: Without dead ends: 480 [2022-07-11 23:52:20,728 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 [2022-07-11 23:52:20,729 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 61 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:20,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 549 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:52:20,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-07-11 23:52:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 445. [2022-07-11 23:52:20,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.554054054054054) internal successors, (690), 444 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:20,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 690 transitions. [2022-07-11 23:52:20,736 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 690 transitions. Word has length 128 [2022-07-11 23:52:20,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:20,736 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 690 transitions. [2022-07-11 23:52:20,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:20,736 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 690 transitions. [2022-07-11 23:52:20,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-11 23:52:20,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:20,738 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, 1, 1] [2022-07-11 23:52:20,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-11 23:52:20,739 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:20,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:20,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1811088327, now seen corresponding path program 1 times [2022-07-11 23:52:20,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:20,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573484173] [2022-07-11 23:52:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:20,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:20,835 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:52:20,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:20,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573484173] [2022-07-11 23:52:20,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573484173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:20,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:20,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:20,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336583176] [2022-07-11 23:52:20,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:20,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:20,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:20,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:20,837 INFO L87 Difference]: Start difference. First operand 445 states and 690 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:21,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:21,965 INFO L93 Difference]: Finished difference Result 903 states and 1404 transitions. [2022-07-11 23:52:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:21,971 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 135 [2022-07-11 23:52:21,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:21,974 INFO L225 Difference]: With dead ends: 903 [2022-07-11 23:52:21,974 INFO L226 Difference]: Without dead ends: 479 [2022-07-11 23:52:21,975 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 [2022-07-11 23:52:21,976 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 83 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 551 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 [2022-07-11 23:52:21,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 551 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-11 23:52:21,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-07-11 23:52:21,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 445. [2022-07-11 23:52:21,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.5518018018018018) internal successors, (689), 444 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 689 transitions. [2022-07-11 23:52:21,989 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 689 transitions. Word has length 135 [2022-07-11 23:52:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:21,989 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 689 transitions. [2022-07-11 23:52:21,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 689 transitions. [2022-07-11 23:52:21,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-11 23:52:21,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:21,990 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, 1, 1] [2022-07-11 23:52:21,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-11 23:52:21,991 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:21,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:21,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1782588037, now seen corresponding path program 1 times [2022-07-11 23:52:21,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:21,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352766349] [2022-07-11 23:52:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:21,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:52:22,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:22,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352766349] [2022-07-11 23:52:22,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352766349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:22,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:22,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:22,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615356570] [2022-07-11 23:52:22,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:22,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:22,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:22,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:22,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:22,101 INFO L87 Difference]: Start difference. First operand 445 states and 689 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:22,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:22,673 INFO L93 Difference]: Finished difference Result 881 states and 1370 transitions. [2022-07-11 23:52:22,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:22,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 135 [2022-07-11 23:52:22,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:22,674 INFO L225 Difference]: With dead ends: 881 [2022-07-11 23:52:22,674 INFO L226 Difference]: Without dead ends: 457 [2022-07-11 23:52:22,675 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 [2022-07-11 23:52:22,675 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 33 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 643 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 [2022-07-11 23:52:22,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 643 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:52:22,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2022-07-11 23:52:22,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 445. [2022-07-11 23:52:22,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.5495495495495495) internal successors, (688), 444 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 688 transitions. [2022-07-11 23:52:22,682 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 688 transitions. Word has length 135 [2022-07-11 23:52:22,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:22,682 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 688 transitions. [2022-07-11 23:52:22,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:22,682 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 688 transitions. [2022-07-11 23:52:22,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-11 23:52:22,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:22,684 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, 1, 1] [2022-07-11 23:52:22,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-11 23:52:22,684 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:22,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:22,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2007273000, now seen corresponding path program 1 times [2022-07-11 23:52:22,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:22,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451483192] [2022-07-11 23:52:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:22,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:22,759 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:52:22,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:22,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451483192] [2022-07-11 23:52:22,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451483192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:22,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:22,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:22,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222837976] [2022-07-11 23:52:22,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:22,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:22,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:22,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:22,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:22,761 INFO L87 Difference]: Start difference. First operand 445 states and 688 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:23,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:23,730 INFO L93 Difference]: Finished difference Result 985 states and 1528 transitions. [2022-07-11 23:52:23,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:23,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 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 [2022-07-11 23:52:23,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:23,732 INFO L225 Difference]: With dead ends: 985 [2022-07-11 23:52:23,732 INFO L226 Difference]: Without dead ends: 561 [2022-07-11 23:52:23,733 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 [2022-07-11 23:52:23,733 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 136 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:23,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 446 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:52:23,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-07-11 23:52:23,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 475. [2022-07-11 23:52:23,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 1.540084388185654) internal successors, (730), 474 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:23,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 730 transitions. [2022-07-11 23:52:23,746 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 730 transitions. Word has length 141 [2022-07-11 23:52:23,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:23,746 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 730 transitions. [2022-07-11 23:52:23,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:23,747 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 730 transitions. [2022-07-11 23:52:23,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-11 23:52:23,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:23,748 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, 1, 1] [2022-07-11 23:52:23,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-11 23:52:23,748 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:23,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:23,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1343983090, now seen corresponding path program 1 times [2022-07-11 23:52:23,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:23,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904707400] [2022-07-11 23:52:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:23,822 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:52:23,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:23,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904707400] [2022-07-11 23:52:23,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904707400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:23,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:23,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:23,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484520451] [2022-07-11 23:52:23,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:23,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:23,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:23,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:23,825 INFO L87 Difference]: Start difference. First operand 475 states and 730 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 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) [2022-07-11 23:52:25,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:25,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:25,806 INFO L93 Difference]: Finished difference Result 1005 states and 1548 transitions. [2022-07-11 23:52:25,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:25,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 142 [2022-07-11 23:52:25,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:25,813 INFO L225 Difference]: With dead ends: 1005 [2022-07-11 23:52:25,813 INFO L226 Difference]: Without dead ends: 551 [2022-07-11 23:52:25,813 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 [2022-07-11 23:52:25,814 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 135 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:25,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 418 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-11 23:52:25,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-07-11 23:52:25,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 475. [2022-07-11 23:52:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 1.5274261603375527) internal successors, (724), 474 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:25,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 724 transitions. [2022-07-11 23:52:25,821 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 724 transitions. Word has length 142 [2022-07-11 23:52:25,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:25,821 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 724 transitions. [2022-07-11 23:52:25,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:25,821 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 724 transitions. [2022-07-11 23:52:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-11 23:52:25,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:25,822 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] [2022-07-11 23:52:25,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-11 23:52:25,823 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:25,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1434371574, now seen corresponding path program 1 times [2022-07-11 23:52:25,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:25,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278412289] [2022-07-11 23:52:25,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:25,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:52:25,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:25,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278412289] [2022-07-11 23:52:25,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278412289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:25,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:25,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:25,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509323209] [2022-07-11 23:52:25,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:25,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:25,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:25,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:25,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:25,893 INFO L87 Difference]: Start difference. First operand 475 states and 724 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:26,972 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:27,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:27,176 INFO L93 Difference]: Finished difference Result 961 states and 1470 transitions. [2022-07-11 23:52:27,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:27,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 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 [2022-07-11 23:52:27,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:27,178 INFO L225 Difference]: With dead ends: 961 [2022-07-11 23:52:27,178 INFO L226 Difference]: Without dead ends: 507 [2022-07-11 23:52:27,178 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 [2022-07-11 23:52:27,179 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 73 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:27,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 569 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-11 23:52:27,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-07-11 23:52:27,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 475. [2022-07-11 23:52:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 474 states have (on average 1.5253164556962024) internal successors, (723), 474 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 723 transitions. [2022-07-11 23:52:27,186 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 723 transitions. Word has length 143 [2022-07-11 23:52:27,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:27,186 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 723 transitions. [2022-07-11 23:52:27,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:27,186 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 723 transitions. [2022-07-11 23:52:27,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-11 23:52:27,187 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:27,187 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] [2022-07-11 23:52:27,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-11 23:52:27,188 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:27,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:27,188 INFO L85 PathProgramCache]: Analyzing trace with hash 463125192, now seen corresponding path program 1 times [2022-07-11 23:52:27,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:27,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874312341] [2022-07-11 23:52:27,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:27,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-11 23:52:27,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:27,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874312341] [2022-07-11 23:52:27,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874312341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:27,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:27,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:52:27,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320930177] [2022-07-11 23:52:27,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:27,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:52:27,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:27,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:52:27,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:52:27,277 INFO L87 Difference]: Start difference. First operand 475 states and 723 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:27,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:27,336 INFO L93 Difference]: Finished difference Result 1378 states and 2113 transitions. [2022-07-11 23:52:27,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:52:27,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 [2022-07-11 23:52:27,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:27,339 INFO L225 Difference]: With dead ends: 1378 [2022-07-11 23:52:27,339 INFO L226 Difference]: Without dead ends: 924 [2022-07-11 23:52:27,340 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 [2022-07-11 23:52:27,340 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:27,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 441 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:52:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2022-07-11 23:52:27,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 922. [2022-07-11 23:52:27,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 921 states have (on average 1.512486427795874) internal successors, (1393), 921 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:27,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1393 transitions. [2022-07-11 23:52:27,352 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1393 transitions. Word has length 143 [2022-07-11 23:52:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:27,352 INFO L495 AbstractCegarLoop]: Abstraction has 922 states and 1393 transitions. [2022-07-11 23:52:27,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:27,352 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1393 transitions. [2022-07-11 23:52:27,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-11 23:52:27,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:27,354 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] [2022-07-11 23:52:27,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-11 23:52:27,354 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:27,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:27,355 INFO L85 PathProgramCache]: Analyzing trace with hash 711271686, now seen corresponding path program 1 times [2022-07-11 23:52:27,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:27,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340116810] [2022-07-11 23:52:27,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:27,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-11 23:52:27,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:27,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340116810] [2022-07-11 23:52:27,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340116810] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:27,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:27,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:27,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396176238] [2022-07-11 23:52:27,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:27,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:27,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:27,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:27,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:27,430 INFO L87 Difference]: Start difference. First operand 922 states and 1393 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 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) [2022-07-11 23:52:27,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:27,830 INFO L93 Difference]: Finished difference Result 1904 states and 2879 transitions. [2022-07-11 23:52:27,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:27,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 [2022-07-11 23:52:27,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:27,832 INFO L225 Difference]: With dead ends: 1904 [2022-07-11 23:52:27,832 INFO L226 Difference]: Without dead ends: 1003 [2022-07-11 23:52:27,842 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 [2022-07-11 23:52:27,843 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 31 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:27,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 643 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:52:27,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2022-07-11 23:52:27,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 974. [2022-07-11 23:52:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 1.5118191161356629) internal successors, (1471), 973 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1471 transitions. [2022-07-11 23:52:27,856 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1471 transitions. Word has length 143 [2022-07-11 23:52:27,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:27,856 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1471 transitions. [2022-07-11 23:52:27,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:27,856 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1471 transitions. [2022-07-11 23:52:27,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-11 23:52:27,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:27,858 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, 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] [2022-07-11 23:52:27,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-11 23:52:27,858 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:27,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:27,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1152410645, now seen corresponding path program 1 times [2022-07-11 23:52:27,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:27,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766960797] [2022-07-11 23:52:27,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:27,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:52:27,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:27,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766960797] [2022-07-11 23:52:27,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766960797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:27,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:27,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147694812] [2022-07-11 23:52:27,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:27,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:27,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:27,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:27,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:27,937 INFO L87 Difference]: Start difference. First operand 974 states and 1471 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) [2022-07-11 23:52:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:28,993 INFO L93 Difference]: Finished difference Result 2154 states and 3245 transitions. [2022-07-11 23:52:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:28,994 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 145 [2022-07-11 23:52:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:28,996 INFO L225 Difference]: With dead ends: 2154 [2022-07-11 23:52:28,997 INFO L226 Difference]: Without dead ends: 1201 [2022-07-11 23:52:28,997 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 [2022-07-11 23:52:28,998 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 137 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:28,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 446 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:52:28,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2022-07-11 23:52:29,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1030. [2022-07-11 23:52:29,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 1.501457725947522) internal successors, (1545), 1029 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1545 transitions. [2022-07-11 23:52:29,011 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1545 transitions. Word has length 145 [2022-07-11 23:52:29,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:29,012 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1545 transitions. [2022-07-11 23:52:29,012 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) [2022-07-11 23:52:29,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1545 transitions. [2022-07-11 23:52:29,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-11 23:52:29,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:29,013 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, 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] [2022-07-11 23:52:29,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-11 23:52:29,014 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:29,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:29,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1777633231, now seen corresponding path program 1 times [2022-07-11 23:52:29,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:29,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734577167] [2022-07-11 23:52:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:29,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:52:29,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:29,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734577167] [2022-07-11 23:52:29,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734577167] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:29,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:29,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:29,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506502782] [2022-07-11 23:52:29,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:29,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:29,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:29,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:29,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:29,094 INFO L87 Difference]: Start difference. First operand 1030 states and 1545 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) [2022-07-11 23:52:30,725 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:52:30,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:30,941 INFO L93 Difference]: Finished difference Result 2086 states and 3126 transitions. [2022-07-11 23:52:30,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:30,942 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 146 [2022-07-11 23:52:30,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:30,944 INFO L225 Difference]: With dead ends: 2086 [2022-07-11 23:52:30,944 INFO L226 Difference]: Without dead ends: 1077 [2022-07-11 23:52:30,945 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 [2022-07-11 23:52:30,946 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 57 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:30,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 587 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-11 23:52:30,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2022-07-11 23:52:30,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1030. [2022-07-11 23:52:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 1.499514091350826) internal successors, (1543), 1029 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:30,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1543 transitions. [2022-07-11 23:52:30,959 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1543 transitions. Word has length 146 [2022-07-11 23:52:30,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:30,959 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1543 transitions. [2022-07-11 23:52:30,960 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) [2022-07-11 23:52:30,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1543 transitions. [2022-07-11 23:52:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-11 23:52:30,961 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:30,961 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, 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] [2022-07-11 23:52:30,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-11 23:52:30,962 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:30,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:30,962 INFO L85 PathProgramCache]: Analyzing trace with hash 560911027, now seen corresponding path program 1 times [2022-07-11 23:52:30,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:30,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536022301] [2022-07-11 23:52:30,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:30,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:52:31,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:31,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536022301] [2022-07-11 23:52:31,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536022301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:31,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:31,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:31,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693649447] [2022-07-11 23:52:31,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:31,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:31,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:31,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:31,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:31,049 INFO L87 Difference]: Start difference. First operand 1030 states and 1543 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:31,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:31,723 INFO L93 Difference]: Finished difference Result 2186 states and 3265 transitions. [2022-07-11 23:52:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:31,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 149 [2022-07-11 23:52:31,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:31,726 INFO L225 Difference]: With dead ends: 2186 [2022-07-11 23:52:31,726 INFO L226 Difference]: Without dead ends: 1177 [2022-07-11 23:52:31,727 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 [2022-07-11 23:52:31,727 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 139 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:31,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 422 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:52:31,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-07-11 23:52:31,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1030. [2022-07-11 23:52:31,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 1.4839650145772594) internal successors, (1527), 1029 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:31,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1527 transitions. [2022-07-11 23:52:31,741 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1527 transitions. Word has length 149 [2022-07-11 23:52:31,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:31,741 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1527 transitions. [2022-07-11 23:52:31,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:31,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1527 transitions. [2022-07-11 23:52:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-11 23:52:31,744 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:31,744 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, 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] [2022-07-11 23:52:31,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-11 23:52:31,744 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:31,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash -851167731, now seen corresponding path program 1 times [2022-07-11 23:52:31,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:31,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407493778] [2022-07-11 23:52:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:31,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:31,823 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:52:31,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:31,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407493778] [2022-07-11 23:52:31,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407493778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:31,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:31,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:31,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334979118] [2022-07-11 23:52:31,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:31,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:31,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:31,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:31,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:31,825 INFO L87 Difference]: Start difference. First operand 1030 states and 1527 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) [2022-07-11 23:52:32,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:32,921 INFO L93 Difference]: Finished difference Result 2186 states and 3233 transitions. [2022-07-11 23:52:32,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:32,922 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 150 [2022-07-11 23:52:32,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:32,924 INFO L225 Difference]: With dead ends: 2186 [2022-07-11 23:52:32,924 INFO L226 Difference]: Without dead ends: 1177 [2022-07-11 23:52:32,925 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 [2022-07-11 23:52:32,925 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 138 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:32,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 418 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-11 23:52:32,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-07-11 23:52:32,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1030. [2022-07-11 23:52:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 1029 states have (on average 1.468415937803693) internal successors, (1511), 1029 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1511 transitions. [2022-07-11 23:52:32,939 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1511 transitions. Word has length 150 [2022-07-11 23:52:32,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:32,939 INFO L495 AbstractCegarLoop]: Abstraction has 1030 states and 1511 transitions. [2022-07-11 23:52:32,939 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) [2022-07-11 23:52:32,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1511 transitions. [2022-07-11 23:52:32,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-11 23:52:32,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:32,941 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, 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] [2022-07-11 23:52:32,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-11 23:52:32,941 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:32,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1383399458, now seen corresponding path program 1 times [2022-07-11 23:52:32,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:32,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482420896] [2022-07-11 23:52:32,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:32,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-11 23:52:33,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:33,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482420896] [2022-07-11 23:52:33,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482420896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:33,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:33,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:33,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255509023] [2022-07-11 23:52:33,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:33,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:33,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:33,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:33,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:33,020 INFO L87 Difference]: Start difference. First operand 1030 states and 1511 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:34,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:34,261 INFO L93 Difference]: Finished difference Result 2266 states and 3319 transitions. [2022-07-11 23:52:34,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:34,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 153 [2022-07-11 23:52:34,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:34,265 INFO L225 Difference]: With dead ends: 2266 [2022-07-11 23:52:34,265 INFO L226 Difference]: Without dead ends: 1257 [2022-07-11 23:52:34,266 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 [2022-07-11 23:52:34,266 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 129 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:34,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 418 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:52:34,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2022-07-11 23:52:34,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1100. [2022-07-11 23:52:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1099 states have (on average 1.462238398544131) internal successors, (1607), 1099 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1607 transitions. [2022-07-11 23:52:34,291 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1607 transitions. Word has length 153 [2022-07-11 23:52:34,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:34,291 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1607 transitions. [2022-07-11 23:52:34,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:34,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1607 transitions. [2022-07-11 23:52:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-11 23:52:34,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:34,293 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, 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] [2022-07-11 23:52:34,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-11 23:52:34,293 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:34,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:34,294 INFO L85 PathProgramCache]: Analyzing trace with hash 451529456, now seen corresponding path program 1 times [2022-07-11 23:52:34,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:34,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039011683] [2022-07-11 23:52:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:34,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:34,371 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:52:34,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:34,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039011683] [2022-07-11 23:52:34,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039011683] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:34,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:34,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:34,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432716623] [2022-07-11 23:52:34,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:34,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:34,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:34,373 INFO L87 Difference]: Start difference. First operand 1100 states and 1607 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:35,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:35,592 INFO L93 Difference]: Finished difference Result 2406 states and 3511 transitions. [2022-07-11 23:52:35,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:35,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 153 [2022-07-11 23:52:35,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:35,596 INFO L225 Difference]: With dead ends: 2406 [2022-07-11 23:52:35,596 INFO L226 Difference]: Without dead ends: 1327 [2022-07-11 23:52:35,597 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 [2022-07-11 23:52:35,598 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 131 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:35,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 428 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:52:35,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2022-07-11 23:52:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1166. [2022-07-11 23:52:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 1.4549356223175967) internal successors, (1695), 1165 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:35,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1695 transitions. [2022-07-11 23:52:35,614 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1695 transitions. Word has length 153 [2022-07-11 23:52:35,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:35,614 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1695 transitions. [2022-07-11 23:52:35,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:35,614 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1695 transitions. [2022-07-11 23:52:35,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-11 23:52:35,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:35,616 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, 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] [2022-07-11 23:52:35,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-11 23:52:35,616 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:35,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:35,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1643090287, now seen corresponding path program 1 times [2022-07-11 23:52:35,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:35,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576272036] [2022-07-11 23:52:35,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:35,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:52:35,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:35,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576272036] [2022-07-11 23:52:35,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576272036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:35,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:35,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:35,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153957831] [2022-07-11 23:52:35,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:35,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:35,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:35,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:35,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:35,722 INFO L87 Difference]: Start difference. First operand 1166 states and 1695 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:36,190 INFO L93 Difference]: Finished difference Result 2342 states and 3404 transitions. [2022-07-11 23:52:36,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:36,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 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 154 [2022-07-11 23:52:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:36,193 INFO L225 Difference]: With dead ends: 2342 [2022-07-11 23:52:36,193 INFO L226 Difference]: Without dead ends: 1197 [2022-07-11 23:52:36,194 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 [2022-07-11 23:52:36,194 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 39 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:36,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 597 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:52:36,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-07-11 23:52:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1166. [2022-07-11 23:52:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 1.4532188841201716) internal successors, (1693), 1165 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1693 transitions. [2022-07-11 23:52:36,209 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1693 transitions. Word has length 154 [2022-07-11 23:52:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:36,209 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1693 transitions. [2022-07-11 23:52:36,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:36,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1693 transitions. [2022-07-11 23:52:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-11 23:52:36,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:36,210 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, 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] [2022-07-11 23:52:36,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-11 23:52:36,211 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:36,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1847471869, now seen corresponding path program 1 times [2022-07-11 23:52:36,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:36,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411016229] [2022-07-11 23:52:36,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:36,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-11 23:52:36,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:36,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411016229] [2022-07-11 23:52:36,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411016229] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:36,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:36,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:36,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129592192] [2022-07-11 23:52:36,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:36,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:36,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:36,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:36,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:36,307 INFO L87 Difference]: Start difference. First operand 1166 states and 1693 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 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) [2022-07-11 23:52:36,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:36,858 INFO L93 Difference]: Finished difference Result 2336 states and 3393 transitions. [2022-07-11 23:52:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:36,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 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 154 [2022-07-11 23:52:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:36,861 INFO L225 Difference]: With dead ends: 2336 [2022-07-11 23:52:36,861 INFO L226 Difference]: Without dead ends: 1191 [2022-07-11 23:52:36,862 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 [2022-07-11 23:52:36,862 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 33 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:36,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 599 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:52:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-07-11 23:52:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1166. [2022-07-11 23:52:36,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 1.4515021459227468) internal successors, (1691), 1165 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:36,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1691 transitions. [2022-07-11 23:52:36,877 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1691 transitions. Word has length 154 [2022-07-11 23:52:36,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:36,877 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 1691 transitions. [2022-07-11 23:52:36,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 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) [2022-07-11 23:52:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1691 transitions. [2022-07-11 23:52:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-11 23:52:36,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:36,879 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 1, 1] [2022-07-11 23:52:36,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-11 23:52:36,879 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:36,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:36,879 INFO L85 PathProgramCache]: Analyzing trace with hash -571128093, now seen corresponding path program 1 times [2022-07-11 23:52:36,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:36,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998563041] [2022-07-11 23:52:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:36,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 153 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-11 23:52:36,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:36,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998563041] [2022-07-11 23:52:36,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998563041] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:36,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:36,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:36,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095875810] [2022-07-11 23:52:36,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:36,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:36,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:36,959 INFO L87 Difference]: Start difference. First operand 1166 states and 1691 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) [2022-07-11 23:52:37,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:37,464 INFO L93 Difference]: Finished difference Result 2472 states and 3584 transitions. [2022-07-11 23:52:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:37,465 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 157 [2022-07-11 23:52:37,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:37,468 INFO L225 Difference]: With dead ends: 2472 [2022-07-11 23:52:37,468 INFO L226 Difference]: Without dead ends: 1327 [2022-07-11 23:52:37,469 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 [2022-07-11 23:52:37,469 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 70 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:37,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 615 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:52:37,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2022-07-11 23:52:37,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1242. [2022-07-11 23:52:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 1.4496373892022563) internal successors, (1799), 1241 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1799 transitions. [2022-07-11 23:52:37,485 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1799 transitions. Word has length 157 [2022-07-11 23:52:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:37,485 INFO L495 AbstractCegarLoop]: Abstraction has 1242 states and 1799 transitions. [2022-07-11 23:52:37,485 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) [2022-07-11 23:52:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1799 transitions. [2022-07-11 23:52:37,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-11 23:52:37,487 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:37,487 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, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:52:37,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-11 23:52:37,487 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:37,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:37,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1373471685, now seen corresponding path program 1 times [2022-07-11 23:52:37,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:37,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423009153] [2022-07-11 23:52:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:37,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:37,549 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-11 23:52:37,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:37,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423009153] [2022-07-11 23:52:37,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423009153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:37,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:37,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:52:37,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727334527] [2022-07-11 23:52:37,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:37,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:52:37,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:37,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:52:37,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:52:37,550 INFO L87 Difference]: Start difference. First operand 1242 states and 1799 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:37,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:37,588 INFO L93 Difference]: Finished difference Result 2490 states and 3610 transitions. [2022-07-11 23:52:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:52:37,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 162 [2022-07-11 23:52:37,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:37,592 INFO L225 Difference]: With dead ends: 2490 [2022-07-11 23:52:37,592 INFO L226 Difference]: Without dead ends: 1269 [2022-07-11 23:52:37,593 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 [2022-07-11 23:52:37,596 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:37,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 432 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:52:37,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-07-11 23:52:37,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1269. [2022-07-11 23:52:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1268 states have (on average 1.446372239747634) internal successors, (1834), 1268 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:37,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1834 transitions. [2022-07-11 23:52:37,622 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1834 transitions. Word has length 162 [2022-07-11 23:52:37,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:37,622 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1834 transitions. [2022-07-11 23:52:37,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:37,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1834 transitions. [2022-07-11 23:52:37,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-11 23:52:37,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:37,624 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, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:52:37,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-11 23:52:37,624 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:37,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1217491143, now seen corresponding path program 1 times [2022-07-11 23:52:37,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:37,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301265723] [2022-07-11 23:52:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:37,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:37,684 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-11 23:52:37,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:37,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301265723] [2022-07-11 23:52:37,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301265723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:37,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:37,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:52:37,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101286514] [2022-07-11 23:52:37,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:37,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:52:37,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:37,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:52:37,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:52:37,686 INFO L87 Difference]: Start difference. First operand 1269 states and 1834 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:37,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:37,721 INFO L93 Difference]: Finished difference Result 2519 states and 3646 transitions. [2022-07-11 23:52:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:52:37,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 162 [2022-07-11 23:52:37,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:37,724 INFO L225 Difference]: With dead ends: 2519 [2022-07-11 23:52:37,724 INFO L226 Difference]: Without dead ends: 1271 [2022-07-11 23:52:37,725 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 [2022-07-11 23:52:37,725 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:37,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 411 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:52:37,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2022-07-11 23:52:37,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1271. [2022-07-11 23:52:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1270 states have (on average 1.4456692913385827) internal successors, (1836), 1270 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1836 transitions. [2022-07-11 23:52:37,741 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1836 transitions. Word has length 162 [2022-07-11 23:52:37,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:37,741 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 1836 transitions. [2022-07-11 23:52:37,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1836 transitions. [2022-07-11 23:52:37,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-11 23:52:37,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:37,742 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, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:52:37,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-11 23:52:37,743 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:37,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:37,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1975010672, now seen corresponding path program 1 times [2022-07-11 23:52:37,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:37,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718935001] [2022-07-11 23:52:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:37,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-11 23:52:37,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:37,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718935001] [2022-07-11 23:52:37,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718935001] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:37,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:37,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:37,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134830401] [2022-07-11 23:52:37,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:37,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:37,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:37,837 INFO L87 Difference]: Start difference. First operand 1271 states and 1836 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 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) [2022-07-11 23:52:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:38,831 INFO L93 Difference]: Finished difference Result 2681 states and 3873 transitions. [2022-07-11 23:52:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:38,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 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 165 [2022-07-11 23:52:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:38,834 INFO L225 Difference]: With dead ends: 2681 [2022-07-11 23:52:38,834 INFO L226 Difference]: Without dead ends: 1433 [2022-07-11 23:52:38,835 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 [2022-07-11 23:52:38,835 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 70 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:38,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 706 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:52:38,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2022-07-11 23:52:38,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1271. [2022-07-11 23:52:38,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1270 states have (on average 1.4456692913385827) internal successors, (1836), 1270 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:38,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1836 transitions. [2022-07-11 23:52:38,852 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1836 transitions. Word has length 165 [2022-07-11 23:52:38,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:38,852 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 1836 transitions. [2022-07-11 23:52:38,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 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) [2022-07-11 23:52:38,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1836 transitions. [2022-07-11 23:52:38,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-11 23:52:38,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:38,854 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1] [2022-07-11 23:52:38,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-11 23:52:38,854 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:38,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:38,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1662705678, now seen corresponding path program 1 times [2022-07-11 23:52:38,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:38,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349147269] [2022-07-11 23:52:38,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:38,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-11 23:52:38,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:38,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349147269] [2022-07-11 23:52:38,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349147269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:38,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:38,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:52:38,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270074758] [2022-07-11 23:52:38,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:38,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:52:38,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:38,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:52:38,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:52:38,944 INFO L87 Difference]: Start difference. First operand 1271 states and 1836 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:39,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:39,013 INFO L93 Difference]: Finished difference Result 3128 states and 4540 transitions. [2022-07-11 23:52:39,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:52:39,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 166 [2022-07-11 23:52:39,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:39,016 INFO L225 Difference]: With dead ends: 3128 [2022-07-11 23:52:39,016 INFO L226 Difference]: Without dead ends: 1880 [2022-07-11 23:52:39,017 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 [2022-07-11 23:52:39,018 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 148 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:39,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 589 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:52:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2022-07-11 23:52:39,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1873. [2022-07-11 23:52:39,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 1.4444444444444444) internal successors, (2704), 1872 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:39,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 2704 transitions. [2022-07-11 23:52:39,042 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 2704 transitions. Word has length 166 [2022-07-11 23:52:39,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:39,042 INFO L495 AbstractCegarLoop]: Abstraction has 1873 states and 2704 transitions. [2022-07-11 23:52:39,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:39,042 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 2704 transitions. [2022-07-11 23:52:39,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-11 23:52:39,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:39,045 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1] [2022-07-11 23:52:39,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-11 23:52:39,045 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:39,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:39,045 INFO L85 PathProgramCache]: Analyzing trace with hash -215669538, now seen corresponding path program 1 times [2022-07-11 23:52:39,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:39,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918861948] [2022-07-11 23:52:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:39,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-11 23:52:39,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:39,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918861948] [2022-07-11 23:52:39,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918861948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:39,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:39,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:39,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847840862] [2022-07-11 23:52:39,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:39,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:39,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:39,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:39,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:39,124 INFO L87 Difference]: Start difference. First operand 1873 states and 2704 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:40,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:40,261 INFO L93 Difference]: Finished difference Result 3966 states and 5715 transitions. [2022-07-11 23:52:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:40,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 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 167 [2022-07-11 23:52:40,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:40,264 INFO L225 Difference]: With dead ends: 3966 [2022-07-11 23:52:40,264 INFO L226 Difference]: Without dead ends: 2116 [2022-07-11 23:52:40,265 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 [2022-07-11 23:52:40,265 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 64 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:40,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 631 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-11 23:52:40,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2022-07-11 23:52:40,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2002. [2022-07-11 23:52:40,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 2001 states have (on average 1.4427786106946527) internal successors, (2887), 2001 states have internal predecessors, (2887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:40,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 2887 transitions. [2022-07-11 23:52:40,292 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 2887 transitions. Word has length 167 [2022-07-11 23:52:40,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:40,292 INFO L495 AbstractCegarLoop]: Abstraction has 2002 states and 2887 transitions. [2022-07-11 23:52:40,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:40,292 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 2887 transitions. [2022-07-11 23:52:40,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-11 23:52:40,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:40,295 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1] [2022-07-11 23:52:40,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-11 23:52:40,295 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:40,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:40,296 INFO L85 PathProgramCache]: Analyzing trace with hash 365978663, now seen corresponding path program 1 times [2022-07-11 23:52:40,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:40,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852287818] [2022-07-11 23:52:40,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:40,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-11 23:52:40,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:40,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852287818] [2022-07-11 23:52:40,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852287818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:40,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:40,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:40,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105636956] [2022-07-11 23:52:40,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:40,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:40,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:40,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:40,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:40,377 INFO L87 Difference]: Start difference. First operand 2002 states and 2887 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:41,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:41,397 INFO L93 Difference]: Finished difference Result 4077 states and 5873 transitions. [2022-07-11 23:52:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:41,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 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 168 [2022-07-11 23:52:41,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:41,400 INFO L225 Difference]: With dead ends: 4077 [2022-07-11 23:52:41,400 INFO L226 Difference]: Without dead ends: 2092 [2022-07-11 23:52:41,401 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 [2022-07-11 23:52:41,402 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 54 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:41,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 625 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:52:41,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2022-07-11 23:52:41,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 1999. [2022-07-11 23:52:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1999 states, 1998 states have (on average 1.441941941941942) internal successors, (2881), 1998 states have internal predecessors, (2881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 2881 transitions. [2022-07-11 23:52:41,437 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 2881 transitions. Word has length 168 [2022-07-11 23:52:41,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:41,437 INFO L495 AbstractCegarLoop]: Abstraction has 1999 states and 2881 transitions. [2022-07-11 23:52:41,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:41,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 2881 transitions. [2022-07-11 23:52:41,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-11 23:52:41,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:41,440 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] [2022-07-11 23:52:41,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-11 23:52:41,440 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:41,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:41,441 INFO L85 PathProgramCache]: Analyzing trace with hash 642961169, now seen corresponding path program 1 times [2022-07-11 23:52:41,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:41,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312376395] [2022-07-11 23:52:41,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:41,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-11 23:52:41,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:41,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312376395] [2022-07-11 23:52:41,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312376395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:41,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:41,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:52:41,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914253884] [2022-07-11 23:52:41,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:41,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:52:41,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:52:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:52:41,517 INFO L87 Difference]: Start difference. First operand 1999 states and 2881 transitions. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:42,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:42,004 INFO L93 Difference]: Finished difference Result 4038 states and 5822 transitions. [2022-07-11 23:52:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:52:42,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 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 171 [2022-07-11 23:52:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:42,007 INFO L225 Difference]: With dead ends: 4038 [2022-07-11 23:52:42,007 INFO L226 Difference]: Without dead ends: 2062 [2022-07-11 23:52:42,009 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 [2022-07-11 23:52:42,009 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 39 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:42,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 654 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:52:42,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2022-07-11 23:52:42,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1999. [2022-07-11 23:52:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1999 states, 1998 states have (on average 1.4404404404404405) internal successors, (2878), 1998 states have internal predecessors, (2878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 2878 transitions. [2022-07-11 23:52:42,031 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 2878 transitions. Word has length 171 [2022-07-11 23:52:42,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:42,032 INFO L495 AbstractCegarLoop]: Abstraction has 1999 states and 2878 transitions. [2022-07-11 23:52:42,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 2878 transitions. [2022-07-11 23:52:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-11 23:52:42,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:42,034 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:52:42,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-11 23:52:42,034 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:42,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1003529291, now seen corresponding path program 1 times [2022-07-11 23:52:42,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:42,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699049799] [2022-07-11 23:52:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:42,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:42,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:42,272 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-11 23:52:42,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:42,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699049799] [2022-07-11 23:52:42,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699049799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:52:42,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:52:42,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:52:42,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341076229] [2022-07-11 23:52:42,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:52:42,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:52:42,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:52:42,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:52:42,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:52:42,274 INFO L87 Difference]: Start difference. First operand 1999 states and 2878 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:43,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:52:43,008 INFO L93 Difference]: Finished difference Result 3995 states and 5752 transitions. [2022-07-11 23:52:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:52:43,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 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 175 [2022-07-11 23:52:43,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:52:43,011 INFO L225 Difference]: With dead ends: 3995 [2022-07-11 23:52:43,011 INFO L226 Difference]: Without dead ends: 1999 [2022-07-11 23:52:43,013 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 [2022-07-11 23:52:43,024 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 7 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:52:43,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 759 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:52:43,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2022-07-11 23:52:43,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1999. [2022-07-11 23:52:43,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1999 states, 1998 states have (on average 1.43993993993994) internal successors, (2877), 1998 states have internal predecessors, (2877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:43,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 2877 transitions. [2022-07-11 23:52:43,050 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 2877 transitions. Word has length 175 [2022-07-11 23:52:43,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:52:43,050 INFO L495 AbstractCegarLoop]: Abstraction has 1999 states and 2877 transitions. [2022-07-11 23:52:43,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:52:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 2877 transitions. [2022-07-11 23:52:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-11 23:52:43,053 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:52:43,053 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:52:43,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-11 23:52:43,053 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:52:43,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:52:43,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1530923341, now seen corresponding path program 1 times [2022-07-11 23:52:43,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:52:43,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590479295] [2022-07-11 23:52:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:43,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:52:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:43,708 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 14 proven. 146 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-11 23:52:43,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:52:43,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590479295] [2022-07-11 23:52:43,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590479295] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:52:43,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332177803] [2022-07-11 23:52:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:52:43,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:52:43,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:52:43,711 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) [2022-07-11 23:52:43,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 23:52:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:52:44,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 180 conjunts are in the unsatisfiable core [2022-07-11 23:52:44,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:52:45,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:52:48,398 INFO L190 IndexEqualityManager]: detected not equals via solver