./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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.07.i.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c6f82e874e2f980b653c53fa0437dd3390b1771d726d8f345336fe56afb2bb6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:38:06,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:38:06,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:38:06,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:38:06,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:38:06,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:38:06,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:38:06,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:38:06,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:38:06,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:38:06,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:38:06,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:38:06,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:38:06,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:38:06,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:38:06,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:38:06,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:38:06,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:38:06,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:38:06,415 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:38:06,416 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:38:06,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:38:06,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:38:06,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:38:06,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:38:06,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:38:06,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:38:06,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:38:06,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:38:06,426 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:38:06,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:38:06,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:38:06,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:38:06,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:38:06,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:38:06,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:38:06,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:38:06,431 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:38:06,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:38:06,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:38:06,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:38:06,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:38:06,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:38:06,458 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:38:06,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:38:06,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:38:06,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:38:06,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:38:06,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:38:06,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:38:06,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:38:06,461 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:38:06,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:38:06,462 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:38:06,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:38:06,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:38:06,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:38:06,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:38:06,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:38:06,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:38:06,463 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:38:06,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:38:06,463 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:38:06,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:38:06,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:38:06,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:38:06,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:38:06,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:38:06,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:38:06,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:38:06,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:38:06,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:38:06,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:38:06,465 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:38:06,465 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:38:06,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:38:06,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c6f82e874e2f980b653c53fa0437dd3390b1771d726d8f345336fe56afb2bb6 [2022-07-13 11:38:06,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:38:06,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:38:06,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:38:06,696 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:38:06,696 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:38:06,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c [2022-07-13 11:38:06,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73821d37b/bfc5433fc3144cd082c57459929291f8/FLAGe648e105e [2022-07-13 11:38:07,188 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:38:07,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.07.i.cil-2.c [2022-07-13 11:38:07,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73821d37b/bfc5433fc3144cd082c57459929291f8/FLAGe648e105e [2022-07-13 11:38:07,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73821d37b/bfc5433fc3144cd082c57459929291f8 [2022-07-13 11:38:07,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:38:07,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:38:07,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:38:07,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:38:07,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:38:07,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:38:07" (1/1) ... [2022-07-13 11:38:07,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11eb8465 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07, skipping insertion in model container [2022-07-13 11:38:07,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:38:07" (1/1) ... [2022-07-13 11:38:07,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:38:07,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:38:07,849 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.07.i.cil-2.c[74369,74382] [2022-07-13 11:38:07,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:38:07,878 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:38:07,963 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.07.i.cil-2.c[74369,74382] [2022-07-13 11:38:07,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:38:07,974 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:38:07,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07 WrapperNode [2022-07-13 11:38:07,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:38:07,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:38:07,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:38:07,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:38:07,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07" (1/1) ... [2022-07-13 11:38:08,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07" (1/1) ... [2022-07-13 11:38:08,056 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 792 [2022-07-13 11:38:08,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:38:08,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:38:08,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:38:08,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:38:08,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07" (1/1) ... [2022-07-13 11:38:08,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07" (1/1) ... [2022-07-13 11:38:08,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07" (1/1) ... [2022-07-13 11:38:08,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07" (1/1) ... [2022-07-13 11:38:08,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07" (1/1) ... [2022-07-13 11:38:08,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07" (1/1) ... [2022-07-13 11:38:08,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07" (1/1) ... [2022-07-13 11:38:08,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:38:08,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:38:08,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:38:08,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:38:08,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07" (1/1) ... [2022-07-13 11:38:08,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:38:08,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:38:08,147 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) [2022-07-13 11:38:08,195 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 [2022-07-13 11:38:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:38:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 11:38:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 11:38:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 11:38:08,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 11:38:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:38:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:38:08,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:38:08,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:38:08,384 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:38:08,385 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:38:08,396 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:38:09,284 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-13 11:38:09,285 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-13 11:38:09,285 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:38:09,293 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:38:09,293 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 11:38:09,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:38:09 BoogieIcfgContainer [2022-07-13 11:38:09,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:38:09,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:38:09,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:38:09,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:38:09,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:38:07" (1/3) ... [2022-07-13 11:38:09,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8230b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:38:09, skipping insertion in model container [2022-07-13 11:38:09,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:38:07" (2/3) ... [2022-07-13 11:38:09,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8230b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:38:09, skipping insertion in model container [2022-07-13 11:38:09,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:38:09" (3/3) ... [2022-07-13 11:38:09,303 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.07.i.cil-2.c [2022-07-13 11:38:09,313 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:38:09,314 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:38:09,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:38:09,376 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@4bb408ed, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@43b69012 [2022-07-13 11:38:09,376 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:38:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:09,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-13 11:38:09,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:09,398 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] [2022-07-13 11:38:09,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:09,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:09,403 INFO L85 PathProgramCache]: Analyzing trace with hash -442385418, now seen corresponding path program 1 times [2022-07-13 11:38:09,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:09,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832642955] [2022-07-13 11:38:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:09,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:09,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:09,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832642955] [2022-07-13 11:38:09,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832642955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:09,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:09,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:09,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726371818] [2022-07-13 11:38:09,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:09,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:09,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:09,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:09,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:09,796 INFO L87 Difference]: Start difference. First operand has 150 states, 148 states have (on average 1.7162162162162162) internal successors, (254), 149 states have internal predecessors, (254), 0 states have call successors, (0), 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 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:10,521 INFO L93 Difference]: Finished difference Result 419 states and 713 transitions. [2022-07-13 11:38:10,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:10,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-07-13 11:38:10,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:10,530 INFO L225 Difference]: With dead ends: 419 [2022-07-13 11:38:10,531 INFO L226 Difference]: Without dead ends: 254 [2022-07-13 11:38:10,533 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 [2022-07-13 11:38:10,535 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 165 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:10,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 439 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:38:10,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-13 11:38:10,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 165. [2022-07-13 11:38:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5853658536585367) internal successors, (260), 164 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:10,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 260 transitions. [2022-07-13 11:38:10,566 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 260 transitions. Word has length 37 [2022-07-13 11:38:10,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:10,566 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 260 transitions. [2022-07-13 11:38:10,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:10,567 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 260 transitions. [2022-07-13 11:38:10,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 11:38:10,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:10,568 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] [2022-07-13 11:38:10,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:38:10,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:10,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:10,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1559591930, now seen corresponding path program 1 times [2022-07-13 11:38:10,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:10,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706866889] [2022-07-13 11:38:10,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:10,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:10,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:10,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706866889] [2022-07-13 11:38:10,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706866889] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:10,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:10,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:10,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400876547] [2022-07-13 11:38:10,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:10,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:10,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:10,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:10,670 INFO L87 Difference]: Start difference. First operand 165 states and 260 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:11,088 INFO L93 Difference]: Finished difference Result 348 states and 547 transitions. [2022-07-13 11:38:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:11,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-07-13 11:38:11,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:11,090 INFO L225 Difference]: With dead ends: 348 [2022-07-13 11:38:11,090 INFO L226 Difference]: Without dead ends: 193 [2022-07-13 11:38:11,091 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 [2022-07-13 11:38:11,092 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 22 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:11,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 469 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:38:11,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-13 11:38:11,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 176. [2022-07-13 11:38:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.5942857142857143) internal successors, (279), 175 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:11,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 279 transitions. [2022-07-13 11:38:11,100 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 279 transitions. Word has length 38 [2022-07-13 11:38:11,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:11,101 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 279 transitions. [2022-07-13 11:38:11,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 279 transitions. [2022-07-13 11:38:11,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-13 11:38:11,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:11,103 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] [2022-07-13 11:38:11,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:38:11,103 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:11,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:11,104 INFO L85 PathProgramCache]: Analyzing trace with hash 103815440, now seen corresponding path program 1 times [2022-07-13 11:38:11,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:11,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230284461] [2022-07-13 11:38:11,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:11,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:11,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:11,196 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:11,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:11,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230284461] [2022-07-13 11:38:11,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230284461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:11,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:11,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:11,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793556393] [2022-07-13 11:38:11,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:11,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:11,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:11,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:11,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:11,198 INFO L87 Difference]: Start difference. First operand 176 states and 279 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:11,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:11,814 INFO L93 Difference]: Finished difference Result 476 states and 757 transitions. [2022-07-13 11:38:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:11,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-07-13 11:38:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:11,816 INFO L225 Difference]: With dead ends: 476 [2022-07-13 11:38:11,816 INFO L226 Difference]: Without dead ends: 321 [2022-07-13 11:38:11,817 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 [2022-07-13 11:38:11,818 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 143 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:11,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 612 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:38:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-07-13 11:38:11,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 208. [2022-07-13 11:38:11,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.5942028985507246) internal successors, (330), 207 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:11,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 330 transitions. [2022-07-13 11:38:11,826 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 330 transitions. Word has length 51 [2022-07-13 11:38:11,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:11,827 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 330 transitions. [2022-07-13 11:38:11,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:11,827 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 330 transitions. [2022-07-13 11:38:11,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 11:38:11,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:11,828 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] [2022-07-13 11:38:11,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 11:38:11,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:11,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:11,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1022264289, now seen corresponding path program 1 times [2022-07-13 11:38:11,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:11,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31306803] [2022-07-13 11:38:11,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:11,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:11,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:11,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31306803] [2022-07-13 11:38:11,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31306803] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:11,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:11,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:11,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118498016] [2022-07-13 11:38:11,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:11,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:11,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:11,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:11,921 INFO L87 Difference]: Start difference. First operand 208 states and 330 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:12,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:12,706 INFO L93 Difference]: Finished difference Result 495 states and 782 transitions. [2022-07-13 11:38:12,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:12,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-13 11:38:12,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:12,708 INFO L225 Difference]: With dead ends: 495 [2022-07-13 11:38:12,708 INFO L226 Difference]: Without dead ends: 308 [2022-07-13 11:38:12,709 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 [2022-07-13 11:38:12,709 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 148 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 332 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 [2022-07-13 11:38:12,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:38:12,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-13 11:38:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 208. [2022-07-13 11:38:12,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.5748792270531402) internal successors, (326), 207 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:12,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 326 transitions. [2022-07-13 11:38:12,726 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 326 transitions. Word has length 52 [2022-07-13 11:38:12,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:12,727 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 326 transitions. [2022-07-13 11:38:12,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:12,728 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 326 transitions. [2022-07-13 11:38:12,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 11:38:12,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:12,730 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] [2022-07-13 11:38:12,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 11:38:12,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:12,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:12,731 INFO L85 PathProgramCache]: Analyzing trace with hash 40885771, now seen corresponding path program 1 times [2022-07-13 11:38:12,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:12,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250896725] [2022-07-13 11:38:12,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:12,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:12,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:12,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:12,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250896725] [2022-07-13 11:38:12,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250896725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:12,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:12,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:12,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843753518] [2022-07-13 11:38:12,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:12,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:12,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:12,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:12,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:12,844 INFO L87 Difference]: Start difference. First operand 208 states and 326 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:13,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:13,463 INFO L93 Difference]: Finished difference Result 411 states and 641 transitions. [2022-07-13 11:38:13,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:13,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-13 11:38:13,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:13,465 INFO L225 Difference]: With dead ends: 411 [2022-07-13 11:38:13,465 INFO L226 Difference]: Without dead ends: 224 [2022-07-13 11:38:13,465 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 [2022-07-13 11:38:13,466 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 26 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:13,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 473 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:38:13,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-13 11:38:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 208. [2022-07-13 11:38:13,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.570048309178744) internal successors, (325), 207 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 325 transitions. [2022-07-13 11:38:13,478 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 325 transitions. Word has length 52 [2022-07-13 11:38:13,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:13,479 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 325 transitions. [2022-07-13 11:38:13,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 325 transitions. [2022-07-13 11:38:13,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 11:38:13,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:13,485 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] [2022-07-13 11:38:13,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:38:13,485 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:13,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash 861050644, now seen corresponding path program 1 times [2022-07-13 11:38:13,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:13,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595102004] [2022-07-13 11:38:13,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:13,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:13,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:13,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595102004] [2022-07-13 11:38:13,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595102004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:13,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:13,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:13,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717888134] [2022-07-13 11:38:13,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:13,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:13,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:13,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:13,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:13,615 INFO L87 Difference]: Start difference. First operand 208 states and 325 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:14,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:14,078 INFO L93 Difference]: Finished difference Result 410 states and 639 transitions. [2022-07-13 11:38:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:14,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-13 11:38:14,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:14,079 INFO L225 Difference]: With dead ends: 410 [2022-07-13 11:38:14,079 INFO L226 Difference]: Without dead ends: 223 [2022-07-13 11:38:14,080 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 [2022-07-13 11:38:14,080 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 19 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:14,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 475 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:38:14,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-07-13 11:38:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 208. [2022-07-13 11:38:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.565217391304348) internal successors, (324), 207 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) [2022-07-13 11:38:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 324 transitions. [2022-07-13 11:38:14,085 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 324 transitions. Word has length 52 [2022-07-13 11:38:14,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:14,085 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 324 transitions. [2022-07-13 11:38:14,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:14,086 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 324 transitions. [2022-07-13 11:38:14,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 11:38:14,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:14,086 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] [2022-07-13 11:38:14,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:38:14,086 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:14,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:14,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1296410196, now seen corresponding path program 1 times [2022-07-13 11:38:14,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:14,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825095481] [2022-07-13 11:38:14,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:14,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:14,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:14,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825095481] [2022-07-13 11:38:14,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825095481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:14,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:14,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:14,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871153356] [2022-07-13 11:38:14,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:14,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:14,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:14,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:14,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:14,171 INFO L87 Difference]: Start difference. First operand 208 states and 324 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:15,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:16,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:16,249 INFO L93 Difference]: Finished difference Result 495 states and 773 transitions. [2022-07-13 11:38:16,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:16,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-13 11:38:16,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:16,250 INFO L225 Difference]: With dead ends: 495 [2022-07-13 11:38:16,251 INFO L226 Difference]: Without dead ends: 308 [2022-07-13 11:38:16,251 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 [2022-07-13 11:38:16,251 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 141 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:16,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 11:38:16,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-13 11:38:16,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 209. [2022-07-13 11:38:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5528846153846154) internal successors, (323), 208 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 323 transitions. [2022-07-13 11:38:16,260 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 323 transitions. Word has length 52 [2022-07-13 11:38:16,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:16,260 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 323 transitions. [2022-07-13 11:38:16,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 323 transitions. [2022-07-13 11:38:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 11:38:16,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:16,262 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] [2022-07-13 11:38:16,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 11:38:16,262 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:16,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:16,263 INFO L85 PathProgramCache]: Analyzing trace with hash 585554567, now seen corresponding path program 1 times [2022-07-13 11:38:16,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:16,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288628223] [2022-07-13 11:38:16,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:16,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:16,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:16,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:16,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288628223] [2022-07-13 11:38:16,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288628223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:16,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:16,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:16,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385807515] [2022-07-13 11:38:16,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:16,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:16,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:16,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:16,368 INFO L87 Difference]: Start difference. First operand 209 states and 323 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:17,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:17,214 INFO L93 Difference]: Finished difference Result 410 states and 635 transitions. [2022-07-13 11:38:17,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:17,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-07-13 11:38:17,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:17,216 INFO L225 Difference]: With dead ends: 410 [2022-07-13 11:38:17,216 INFO L226 Difference]: Without dead ends: 222 [2022-07-13 11:38:17,217 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 [2022-07-13 11:38:17,217 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 22 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:17,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 479 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:38:17,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-13 11:38:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 209. [2022-07-13 11:38:17,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5480769230769231) internal successors, (322), 208 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:17,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 322 transitions. [2022-07-13 11:38:17,244 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 322 transitions. Word has length 53 [2022-07-13 11:38:17,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:17,244 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 322 transitions. [2022-07-13 11:38:17,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:17,245 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 322 transitions. [2022-07-13 11:38:17,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-13 11:38:17,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:17,247 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] [2022-07-13 11:38:17,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:38:17,247 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:17,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:17,248 INFO L85 PathProgramCache]: Analyzing trace with hash -991616538, now seen corresponding path program 1 times [2022-07-13 11:38:17,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:17,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477135781] [2022-07-13 11:38:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:17,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:17,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:17,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477135781] [2022-07-13 11:38:17,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477135781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:17,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:17,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:17,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503966032] [2022-07-13 11:38:17,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:17,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:17,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:17,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:17,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:17,328 INFO L87 Difference]: Start difference. First operand 209 states and 322 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:18,306 INFO L93 Difference]: Finished difference Result 496 states and 769 transitions. [2022-07-13 11:38:18,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:18,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-13 11:38:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:18,308 INFO L225 Difference]: With dead ends: 496 [2022-07-13 11:38:18,308 INFO L226 Difference]: Without dead ends: 308 [2022-07-13 11:38:18,308 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 [2022-07-13 11:38:18,309 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:18,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:38:18,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-13 11:38:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 209. [2022-07-13 11:38:18,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5288461538461537) internal successors, (318), 208 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 318 transitions. [2022-07-13 11:38:18,313 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 318 transitions. Word has length 54 [2022-07-13 11:38:18,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:18,313 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 318 transitions. [2022-07-13 11:38:18,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:18,313 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 318 transitions. [2022-07-13 11:38:18,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 11:38:18,313 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:18,314 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] [2022-07-13 11:38:18,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:38:18,314 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:18,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:18,314 INFO L85 PathProgramCache]: Analyzing trace with hash 373652162, now seen corresponding path program 1 times [2022-07-13 11:38:18,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:18,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520976778] [2022-07-13 11:38:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:18,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:18,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:18,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520976778] [2022-07-13 11:38:18,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520976778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:18,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:18,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:18,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901922024] [2022-07-13 11:38:18,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:18,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:18,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:18,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:18,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:18,406 INFO L87 Difference]: Start difference. First operand 209 states and 318 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:19,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:19,139 INFO L93 Difference]: Finished difference Result 400 states and 614 transitions. [2022-07-13 11:38:19,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:19,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-07-13 11:38:19,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:19,140 INFO L225 Difference]: With dead ends: 400 [2022-07-13 11:38:19,140 INFO L226 Difference]: Without dead ends: 212 [2022-07-13 11:38:19,141 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 [2022-07-13 11:38:19,141 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 11 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:19,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 493 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:38:19,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-13 11:38:19,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 209. [2022-07-13 11:38:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.5240384615384615) internal successors, (317), 208 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:19,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 317 transitions. [2022-07-13 11:38:19,161 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 317 transitions. Word has length 55 [2022-07-13 11:38:19,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:19,161 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 317 transitions. [2022-07-13 11:38:19,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:19,161 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 317 transitions. [2022-07-13 11:38:19,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 11:38:19,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:19,162 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] [2022-07-13 11:38:19,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 11:38:19,162 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:19,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:19,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1312076378, now seen corresponding path program 1 times [2022-07-13 11:38:19,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:19,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593823959] [2022-07-13 11:38:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:19,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:19,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:19,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593823959] [2022-07-13 11:38:19,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593823959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:19,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:19,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:19,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151670978] [2022-07-13 11:38:19,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:19,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:19,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:19,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:19,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:19,242 INFO L87 Difference]: Start difference. First operand 209 states and 317 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:19,626 INFO L93 Difference]: Finished difference Result 437 states and 668 transitions. [2022-07-13 11:38:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:19,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-07-13 11:38:19,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:19,628 INFO L225 Difference]: With dead ends: 437 [2022-07-13 11:38:19,628 INFO L226 Difference]: Without dead ends: 249 [2022-07-13 11:38:19,628 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 [2022-07-13 11:38:19,628 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 30 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:19,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 497 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:38:19,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-13 11:38:19,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 231. [2022-07-13 11:38:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.5260869565217392) internal successors, (351), 230 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:19,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 351 transitions. [2022-07-13 11:38:19,633 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 351 transitions. Word has length 55 [2022-07-13 11:38:19,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:19,633 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 351 transitions. [2022-07-13 11:38:19,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:19,633 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 351 transitions. [2022-07-13 11:38:19,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 11:38:19,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:19,634 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] [2022-07-13 11:38:19,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 11:38:19,634 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1411411051, now seen corresponding path program 1 times [2022-07-13 11:38:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:19,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121347319] [2022-07-13 11:38:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:19,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:19,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:19,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121347319] [2022-07-13 11:38:19,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121347319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:19,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:19,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:19,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547629865] [2022-07-13 11:38:19,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:19,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:19,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:19,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:19,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:19,703 INFO L87 Difference]: Start difference. First operand 231 states and 351 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:20,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:20,725 INFO L93 Difference]: Finished difference Result 540 states and 829 transitions. [2022-07-13 11:38:20,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:20,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-07-13 11:38:20,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:20,726 INFO L225 Difference]: With dead ends: 540 [2022-07-13 11:38:20,726 INFO L226 Difference]: Without dead ends: 330 [2022-07-13 11:38:20,727 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 [2022-07-13 11:38:20,727 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 145 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:20,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:38:20,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-07-13 11:38:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 231. [2022-07-13 11:38:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.508695652173913) internal successors, (347), 230 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:20,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 347 transitions. [2022-07-13 11:38:20,750 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 347 transitions. Word has length 69 [2022-07-13 11:38:20,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:20,750 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 347 transitions. [2022-07-13 11:38:20,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 347 transitions. [2022-07-13 11:38:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 11:38:20,751 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:20,751 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] [2022-07-13 11:38:20,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 11:38:20,751 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:20,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2063391372, now seen corresponding path program 1 times [2022-07-13 11:38:20,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:20,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141916290] [2022-07-13 11:38:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:20,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:20,836 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:20,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:20,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141916290] [2022-07-13 11:38:20,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141916290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:20,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:20,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:20,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352874458] [2022-07-13 11:38:20,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:20,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:20,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:20,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:20,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:20,838 INFO L87 Difference]: Start difference. First operand 231 states and 347 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:21,949 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:22,209 INFO L93 Difference]: Finished difference Result 539 states and 820 transitions. [2022-07-13 11:38:22,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:22,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-07-13 11:38:22,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:22,211 INFO L225 Difference]: With dead ends: 539 [2022-07-13 11:38:22,211 INFO L226 Difference]: Without dead ends: 329 [2022-07-13 11:38:22,211 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 [2022-07-13 11:38:22,212 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 138 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:22,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 334 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 11:38:22,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-07-13 11:38:22,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 232. [2022-07-13 11:38:22,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.4978354978354977) internal successors, (346), 231 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 346 transitions. [2022-07-13 11:38:22,216 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 346 transitions. Word has length 69 [2022-07-13 11:38:22,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:22,216 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 346 transitions. [2022-07-13 11:38:22,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:22,216 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 346 transitions. [2022-07-13 11:38:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 11:38:22,216 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:22,216 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] [2022-07-13 11:38:22,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 11:38:22,217 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:22,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:22,217 INFO L85 PathProgramCache]: Analyzing trace with hash 122165287, now seen corresponding path program 1 times [2022-07-13 11:38:22,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:22,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860523979] [2022-07-13 11:38:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:22,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:22,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:22,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:22,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860523979] [2022-07-13 11:38:22,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860523979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:22,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:22,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:22,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131094404] [2022-07-13 11:38:22,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:22,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:22,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:22,305 INFO L87 Difference]: Start difference. First operand 232 states and 346 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:24,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:24,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:24,457 INFO L93 Difference]: Finished difference Result 540 states and 816 transitions. [2022-07-13 11:38:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:24,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-07-13 11:38:24,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:24,458 INFO L225 Difference]: With dead ends: 540 [2022-07-13 11:38:24,458 INFO L226 Difference]: Without dead ends: 329 [2022-07-13 11:38:24,459 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 [2022-07-13 11:38:24,460 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 142 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:24,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 334 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 11:38:24,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-07-13 11:38:24,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 232. [2022-07-13 11:38:24,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.4805194805194806) internal successors, (342), 231 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:24,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 342 transitions. [2022-07-13 11:38:24,466 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 342 transitions. Word has length 70 [2022-07-13 11:38:24,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:24,466 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 342 transitions. [2022-07-13 11:38:24,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:24,467 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 342 transitions. [2022-07-13 11:38:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 11:38:24,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:24,467 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] [2022-07-13 11:38:24,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 11:38:24,467 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:24,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:24,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1733152866, now seen corresponding path program 1 times [2022-07-13 11:38:24,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:24,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117182335] [2022-07-13 11:38:24,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:24,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:24,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:38:24,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:24,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117182335] [2022-07-13 11:38:24,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117182335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:24,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:24,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:24,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045429224] [2022-07-13 11:38:24,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:24,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:24,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:24,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:24,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:24,563 INFO L87 Difference]: Start difference. First operand 232 states and 342 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:25,799 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:25,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:25,960 INFO L93 Difference]: Finished difference Result 450 states and 669 transitions. [2022-07-13 11:38:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:25,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-07-13 11:38:25,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:25,961 INFO L225 Difference]: With dead ends: 450 [2022-07-13 11:38:25,961 INFO L226 Difference]: Without dead ends: 239 [2022-07-13 11:38:25,963 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 [2022-07-13 11:38:25,964 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 26 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:25,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 513 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 11:38:25,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-07-13 11:38:25,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 232. [2022-07-13 11:38:25,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.4761904761904763) internal successors, (341), 231 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:25,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 341 transitions. [2022-07-13 11:38:25,968 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 341 transitions. Word has length 72 [2022-07-13 11:38:25,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:25,968 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 341 transitions. [2022-07-13 11:38:25,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:25,981 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 341 transitions. [2022-07-13 11:38:25,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 11:38:25,981 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:25,982 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] [2022-07-13 11:38:25,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 11:38:25,982 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:25,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:25,982 INFO L85 PathProgramCache]: Analyzing trace with hash 293504549, now seen corresponding path program 1 times [2022-07-13 11:38:25,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:25,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977657290] [2022-07-13 11:38:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:25,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:38:26,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:26,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977657290] [2022-07-13 11:38:26,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977657290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:26,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:26,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:26,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656403302] [2022-07-13 11:38:26,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:26,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:26,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:26,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:26,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:26,112 INFO L87 Difference]: Start difference. First operand 232 states and 341 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:27,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:27,207 INFO L93 Difference]: Finished difference Result 536 states and 793 transitions. [2022-07-13 11:38:27,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:27,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-13 11:38:27,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:27,209 INFO L225 Difference]: With dead ends: 536 [2022-07-13 11:38:27,209 INFO L226 Difference]: Without dead ends: 325 [2022-07-13 11:38:27,209 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 [2022-07-13 11:38:27,209 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 84 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:27,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 471 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 11:38:27,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-07-13 11:38:27,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 263. [2022-07-13 11:38:27,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.4770992366412214) internal successors, (387), 262 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) [2022-07-13 11:38:27,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 387 transitions. [2022-07-13 11:38:27,214 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 387 transitions. Word has length 77 [2022-07-13 11:38:27,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:27,215 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 387 transitions. [2022-07-13 11:38:27,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:27,215 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 387 transitions. [2022-07-13 11:38:27,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 11:38:27,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:27,216 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] [2022-07-13 11:38:27,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 11:38:27,216 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1950478749, now seen corresponding path program 1 times [2022-07-13 11:38:27,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:27,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843755567] [2022-07-13 11:38:27,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:27,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:38:27,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:27,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843755567] [2022-07-13 11:38:27,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843755567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:27,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:27,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:27,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661307053] [2022-07-13 11:38:27,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:27,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:27,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:27,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:27,295 INFO L87 Difference]: Start difference. First operand 263 states and 387 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:27,710 INFO L93 Difference]: Finished difference Result 551 states and 815 transitions. [2022-07-13 11:38:27,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:27,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-13 11:38:27,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:27,711 INFO L225 Difference]: With dead ends: 551 [2022-07-13 11:38:27,711 INFO L226 Difference]: Without dead ends: 309 [2022-07-13 11:38:27,712 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 [2022-07-13 11:38:27,712 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 35 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:27,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 589 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:38:27,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-13 11:38:27,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 287. [2022-07-13 11:38:27,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.4755244755244756) internal successors, (422), 286 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 422 transitions. [2022-07-13 11:38:27,717 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 422 transitions. Word has length 77 [2022-07-13 11:38:27,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:27,717 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 422 transitions. [2022-07-13 11:38:27,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:27,717 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 422 transitions. [2022-07-13 11:38:27,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-13 11:38:27,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:27,718 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] [2022-07-13 11:38:27,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 11:38:27,718 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:27,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:27,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2009733770, now seen corresponding path program 1 times [2022-07-13 11:38:27,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:27,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440704593] [2022-07-13 11:38:27,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:27,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:38:27,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:27,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440704593] [2022-07-13 11:38:27,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440704593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:27,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:27,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:27,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675003091] [2022-07-13 11:38:27,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:27,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:27,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:27,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:27,808 INFO L87 Difference]: Start difference. First operand 287 states and 422 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:28,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:28,531 INFO L93 Difference]: Finished difference Result 615 states and 908 transitions. [2022-07-13 11:38:28,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:28,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 82 [2022-07-13 11:38:28,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:28,532 INFO L225 Difference]: With dead ends: 615 [2022-07-13 11:38:28,532 INFO L226 Difference]: Without dead ends: 349 [2022-07-13 11:38:28,533 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 [2022-07-13 11:38:28,533 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 73 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:28,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 469 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:38:28,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-07-13 11:38:28,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 297. [2022-07-13 11:38:28,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.489864864864865) internal successors, (441), 296 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:28,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 441 transitions. [2022-07-13 11:38:28,540 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 441 transitions. Word has length 82 [2022-07-13 11:38:28,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:28,540 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 441 transitions. [2022-07-13 11:38:28,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:28,541 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 441 transitions. [2022-07-13 11:38:28,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-13 11:38:28,543 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:28,543 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] [2022-07-13 11:38:28,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 11:38:28,543 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:28,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:28,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2129799745, now seen corresponding path program 1 times [2022-07-13 11:38:28,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:28,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462599098] [2022-07-13 11:38:28,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:28,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:28,644 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:38:28,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:28,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462599098] [2022-07-13 11:38:28,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462599098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:28,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:28,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:28,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413086675] [2022-07-13 11:38:28,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:28,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:28,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:28,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:28,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:28,646 INFO L87 Difference]: Start difference. First operand 297 states and 441 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:29,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:29,351 INFO L93 Difference]: Finished difference Result 619 states and 919 transitions. [2022-07-13 11:38:29,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:29,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 83 [2022-07-13 11:38:29,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:29,352 INFO L225 Difference]: With dead ends: 619 [2022-07-13 11:38:29,352 INFO L226 Difference]: Without dead ends: 343 [2022-07-13 11:38:29,353 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 [2022-07-13 11:38:29,353 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 66 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:29,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 475 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:38:29,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-13 11:38:29,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 298. [2022-07-13 11:38:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 1.4882154882154883) internal successors, (442), 297 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 442 transitions. [2022-07-13 11:38:29,358 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 442 transitions. Word has length 83 [2022-07-13 11:38:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:29,358 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 442 transitions. [2022-07-13 11:38:29,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 442 transitions. [2022-07-13 11:38:29,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-13 11:38:29,359 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:29,359 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 11:38:29,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 11:38:29,359 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:29,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:29,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1674400777, now seen corresponding path program 1 times [2022-07-13 11:38:29,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:29,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950411285] [2022-07-13 11:38:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:29,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 11:38:29,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:29,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950411285] [2022-07-13 11:38:29,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950411285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:29,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:29,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:38:29,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979263534] [2022-07-13 11:38:29,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:29,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:38:29,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:29,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:38:29,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:29,488 INFO L87 Difference]: Start difference. First operand 298 states and 442 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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) [2022-07-13 11:38:32,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:32,358 INFO L93 Difference]: Finished difference Result 585 states and 872 transitions. [2022-07-13 11:38:32,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:38:32,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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 94 [2022-07-13 11:38:32,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:32,359 INFO L225 Difference]: With dead ends: 585 [2022-07-13 11:38:32,359 INFO L226 Difference]: Without dead ends: 308 [2022-07-13 11:38:32,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:38:32,360 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 145 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:32,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 358 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 311 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 11:38:32,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-07-13 11:38:32,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2022-07-13 11:38:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.4803921568627452) internal successors, (453), 306 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:32,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 453 transitions. [2022-07-13 11:38:32,364 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 453 transitions. Word has length 94 [2022-07-13 11:38:32,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:32,365 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 453 transitions. [2022-07-13 11:38:32,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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) [2022-07-13 11:38:32,365 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 453 transitions. [2022-07-13 11:38:32,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 11:38:32,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:32,365 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 11:38:32,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 11:38:32,366 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:32,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:32,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1278038072, now seen corresponding path program 1 times [2022-07-13 11:38:32,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:32,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123747592] [2022-07-13 11:38:32,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:32,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:32,453 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:38:32,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:32,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123747592] [2022-07-13 11:38:32,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123747592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:32,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:32,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:32,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290990969] [2022-07-13 11:38:32,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:32,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:32,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:32,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:32,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:32,456 INFO L87 Difference]: Start difference. First operand 307 states and 453 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:33,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:33,444 INFO L93 Difference]: Finished difference Result 680 states and 1017 transitions. [2022-07-13 11:38:33,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:33,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 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 95 [2022-07-13 11:38:33,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:33,446 INFO L225 Difference]: With dead ends: 680 [2022-07-13 11:38:33,446 INFO L226 Difference]: Without dead ends: 394 [2022-07-13 11:38:33,446 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 [2022-07-13 11:38:33,446 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 132 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:33,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 354 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:38:33,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-07-13 11:38:33,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 307. [2022-07-13 11:38:33,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.4640522875816993) internal successors, (448), 306 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 448 transitions. [2022-07-13 11:38:33,457 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 448 transitions. Word has length 95 [2022-07-13 11:38:33,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:33,457 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 448 transitions. [2022-07-13 11:38:33,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:33,457 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 448 transitions. [2022-07-13 11:38:33,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 11:38:33,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:33,458 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:33,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 11:38:33,458 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:33,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:33,459 INFO L85 PathProgramCache]: Analyzing trace with hash 868200130, now seen corresponding path program 1 times [2022-07-13 11:38:33,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:33,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920493491] [2022-07-13 11:38:33,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:33,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:38:33,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:33,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920493491] [2022-07-13 11:38:33,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920493491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:33,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:33,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:38:33,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581382619] [2022-07-13 11:38:33,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:33,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:38:33,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:33,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:38:33,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:38:33,545 INFO L87 Difference]: Start difference. First operand 307 states and 448 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:33,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:33,960 INFO L93 Difference]: Finished difference Result 628 states and 918 transitions. [2022-07-13 11:38:33,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:38:33,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 99 [2022-07-13 11:38:33,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:33,962 INFO L225 Difference]: With dead ends: 628 [2022-07-13 11:38:33,962 INFO L226 Difference]: Without dead ends: 342 [2022-07-13 11:38:33,962 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 [2022-07-13 11:38:33,963 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 73 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:33,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 503 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:38:33,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-07-13 11:38:33,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 307. [2022-07-13 11:38:33,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.4607843137254901) internal successors, (447), 306 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:33,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 447 transitions. [2022-07-13 11:38:33,968 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 447 transitions. Word has length 99 [2022-07-13 11:38:33,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:33,968 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 447 transitions. [2022-07-13 11:38:33,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:33,968 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 447 transitions. [2022-07-13 11:38:33,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 11:38:33,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:33,969 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:33,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 11:38:33,969 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:33,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:33,969 INFO L85 PathProgramCache]: Analyzing trace with hash 908874880, now seen corresponding path program 1 times [2022-07-13 11:38:33,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:33,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821684821] [2022-07-13 11:38:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:33,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 11:38:34,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:34,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821684821] [2022-07-13 11:38:34,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821684821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:34,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:34,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:34,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764930000] [2022-07-13 11:38:34,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:34,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:34,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:34,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:34,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:34,069 INFO L87 Difference]: Start difference. First operand 307 states and 447 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:34,099 INFO L93 Difference]: Finished difference Result 872 states and 1283 transitions. [2022-07-13 11:38:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:34,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 99 [2022-07-13 11:38:34,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:34,101 INFO L225 Difference]: With dead ends: 872 [2022-07-13 11:38:34,102 INFO L226 Difference]: Without dead ends: 586 [2022-07-13 11:38:34,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:34,104 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 141 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:34,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 426 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:38:34,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-07-13 11:38:34,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-07-13 11:38:34,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 1.458119658119658) internal successors, (853), 585 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 853 transitions. [2022-07-13 11:38:34,116 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 853 transitions. Word has length 99 [2022-07-13 11:38:34,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:34,116 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 853 transitions. [2022-07-13 11:38:34,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,117 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 853 transitions. [2022-07-13 11:38:34,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 11:38:34,118 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:34,118 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:34,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 11:38:34,118 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:34,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:34,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1342603966, now seen corresponding path program 1 times [2022-07-13 11:38:34,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:34,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303479541] [2022-07-13 11:38:34,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:34,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:34,183 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 11:38:34,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:34,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303479541] [2022-07-13 11:38:34,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303479541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:34,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:34,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:34,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532798183] [2022-07-13 11:38:34,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:34,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:34,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:34,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:34,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:34,185 INFO L87 Difference]: Start difference. First operand 586 states and 853 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) [2022-07-13 11:38:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:34,208 INFO L93 Difference]: Finished difference Result 1178 states and 1718 transitions. [2022-07-13 11:38:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:34,209 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 99 [2022-07-13 11:38:34,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:34,210 INFO L225 Difference]: With dead ends: 1178 [2022-07-13 11:38:34,211 INFO L226 Difference]: Without dead ends: 613 [2022-07-13 11:38:34,211 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 [2022-07-13 11:38:34,212 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 15 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:34,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 410 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:38:34,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-07-13 11:38:34,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2022-07-13 11:38:34,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 1.4509803921568627) internal successors, (888), 612 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 888 transitions. [2022-07-13 11:38:34,224 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 888 transitions. Word has length 99 [2022-07-13 11:38:34,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:34,224 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 888 transitions. [2022-07-13 11:38:34,224 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) [2022-07-13 11:38:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 888 transitions. [2022-07-13 11:38:34,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 11:38:34,225 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:34,225 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:34,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 11:38:34,226 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:34,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:34,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2113329668, now seen corresponding path program 1 times [2022-07-13 11:38:34,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:34,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528990533] [2022-07-13 11:38:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:34,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:34,284 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-13 11:38:34,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:34,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528990533] [2022-07-13 11:38:34,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528990533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:34,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:34,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:34,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002026260] [2022-07-13 11:38:34,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:34,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:34,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:34,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:34,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:34,286 INFO L87 Difference]: Start difference. First operand 613 states and 888 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:34,316 INFO L93 Difference]: Finished difference Result 1207 states and 1754 transitions. [2022-07-13 11:38:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:34,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 99 [2022-07-13 11:38:34,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:34,318 INFO L225 Difference]: With dead ends: 1207 [2022-07-13 11:38:34,318 INFO L226 Difference]: Without dead ends: 615 [2022-07-13 11:38:34,321 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 [2022-07-13 11:38:34,322 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 4 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:34,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 389 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:38:34,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-07-13 11:38:34,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2022-07-13 11:38:34,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 1.4495114006514658) internal successors, (890), 614 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 890 transitions. [2022-07-13 11:38:34,335 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 890 transitions. Word has length 99 [2022-07-13 11:38:34,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:34,335 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 890 transitions. [2022-07-13 11:38:34,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,336 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 890 transitions. [2022-07-13 11:38:34,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 11:38:34,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:34,337 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-13 11:38:34,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 11:38:34,337 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:34,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:34,338 INFO L85 PathProgramCache]: Analyzing trace with hash -254845290, now seen corresponding path program 1 times [2022-07-13 11:38:34,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:34,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413894543] [2022-07-13 11:38:34,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:34,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 11:38:34,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:34,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413894543] [2022-07-13 11:38:34,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413894543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:34,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:34,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:34,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656186073] [2022-07-13 11:38:34,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:34,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:34,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:34,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:34,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:34,420 INFO L87 Difference]: Start difference. First operand 615 states and 890 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:34,472 INFO L93 Difference]: Finished difference Result 1493 states and 2175 transitions. [2022-07-13 11:38:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:34,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-07-13 11:38:34,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:34,474 INFO L225 Difference]: With dead ends: 1493 [2022-07-13 11:38:34,474 INFO L226 Difference]: Without dead ends: 901 [2022-07-13 11:38:34,475 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 [2022-07-13 11:38:34,476 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 164 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:34,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 372 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:38:34,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-07-13 11:38:34,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 899. [2022-07-13 11:38:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 898 states have (on average 1.457683741648107) internal successors, (1309), 898 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1309 transitions. [2022-07-13 11:38:34,494 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1309 transitions. Word has length 101 [2022-07-13 11:38:34,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:34,494 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1309 transitions. [2022-07-13 11:38:34,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,495 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1309 transitions. [2022-07-13 11:38:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 11:38:34,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:34,496 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-13 11:38:34,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 11:38:34,496 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:34,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:34,496 INFO L85 PathProgramCache]: Analyzing trace with hash 34857145, now seen corresponding path program 1 times [2022-07-13 11:38:34,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:34,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513009122] [2022-07-13 11:38:34,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:34,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 11:38:34,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:34,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513009122] [2022-07-13 11:38:34,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513009122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:34,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:34,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:34,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197790057] [2022-07-13 11:38:34,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:34,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:34,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:34,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:34,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:34,616 INFO L87 Difference]: Start difference. First operand 899 states and 1309 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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) [2022-07-13 11:38:34,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:34,681 INFO L93 Difference]: Finished difference Result 2061 states and 3011 transitions. [2022-07-13 11:38:34,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:34,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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 106 [2022-07-13 11:38:34,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:34,694 INFO L225 Difference]: With dead ends: 2061 [2022-07-13 11:38:34,694 INFO L226 Difference]: Without dead ends: 1185 [2022-07-13 11:38:34,695 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 [2022-07-13 11:38:34,696 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 150 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:34,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 567 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:38:34,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2022-07-13 11:38:34,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1183. [2022-07-13 11:38:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.4500846023688663) internal successors, (1714), 1182 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1714 transitions. [2022-07-13 11:38:34,738 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1714 transitions. Word has length 106 [2022-07-13 11:38:34,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:34,738 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1714 transitions. [2022-07-13 11:38:34,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 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) [2022-07-13 11:38:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1714 transitions. [2022-07-13 11:38:34,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-13 11:38:34,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:34,740 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] [2022-07-13 11:38:34,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 11:38:34,741 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:34,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1774249839, now seen corresponding path program 1 times [2022-07-13 11:38:34,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:34,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330522515] [2022-07-13 11:38:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:34,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 11:38:34,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:34,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330522515] [2022-07-13 11:38:34,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330522515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:34,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:34,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:34,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635913731] [2022-07-13 11:38:34,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:34,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:34,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:34,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:34,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:34,815 INFO L87 Difference]: Start difference. First operand 1183 states and 1714 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) [2022-07-13 11:38:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:34,860 INFO L93 Difference]: Finished difference Result 2624 states and 3816 transitions. [2022-07-13 11:38:34,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:34,861 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 123 [2022-07-13 11:38:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:34,864 INFO L225 Difference]: With dead ends: 2624 [2022-07-13 11:38:34,864 INFO L226 Difference]: Without dead ends: 1464 [2022-07-13 11:38:34,865 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 [2022-07-13 11:38:34,866 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 143 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:34,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 567 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:38:34,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2022-07-13 11:38:34,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1464. [2022-07-13 11:38:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 1.4497607655502391) internal successors, (2121), 1463 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:34,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2121 transitions. [2022-07-13 11:38:34,892 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2121 transitions. Word has length 123 [2022-07-13 11:38:34,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:34,892 INFO L495 AbstractCegarLoop]: Abstraction has 1464 states and 2121 transitions. [2022-07-13 11:38:34,892 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) [2022-07-13 11:38:34,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2121 transitions. [2022-07-13 11:38:34,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-13 11:38:34,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:34,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:38:34,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 11:38:34,894 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:34,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:34,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1271906027, now seen corresponding path program 1 times [2022-07-13 11:38:34,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:34,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728665172] [2022-07-13 11:38:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:34,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:35,006 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-13 11:38:35,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:35,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728665172] [2022-07-13 11:38:35,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728665172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:35,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:35,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:38:35,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347448341] [2022-07-13 11:38:35,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:35,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:38:35,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:35,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:38:35,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:38:35,008 INFO L87 Difference]: Start difference. First operand 1464 states and 2121 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:35,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:35,046 INFO L93 Difference]: Finished difference Result 1752 states and 2537 transitions. [2022-07-13 11:38:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:38:35,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 129 [2022-07-13 11:38:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:35,050 INFO L225 Difference]: With dead ends: 1752 [2022-07-13 11:38:35,050 INFO L226 Difference]: Without dead ends: 1750 [2022-07-13 11:38:35,051 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 [2022-07-13 11:38:35,053 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 165 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:35,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 371 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:38:35,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2022-07-13 11:38:35,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1748. [2022-07-13 11:38:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1747 states have (on average 1.450486548368632) internal successors, (2534), 1747 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:35,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2534 transitions. [2022-07-13 11:38:35,092 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2534 transitions. Word has length 129 [2022-07-13 11:38:35,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:35,093 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 2534 transitions. [2022-07-13 11:38:35,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2534 transitions. [2022-07-13 11:38:35,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-13 11:38:35,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:35,096 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] [2022-07-13 11:38:35,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 11:38:35,096 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:35,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1035961974, now seen corresponding path program 1 times [2022-07-13 11:38:35,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:35,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079094688] [2022-07-13 11:38:35,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:35,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:35,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-13 11:38:35,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:35,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079094688] [2022-07-13 11:38:35,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079094688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:38:35,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:38:35,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:38:35,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988138292] [2022-07-13 11:38:35,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:38:35,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:38:35,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:38:35,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:38:35,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:38:35,317 INFO L87 Difference]: Start difference. First operand 1748 states and 2534 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:36,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:38:37,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:38:37,168 INFO L93 Difference]: Finished difference Result 3493 states and 5064 transitions. [2022-07-13 11:38:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:38:37,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 [2022-07-13 11:38:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:38:37,173 INFO L225 Difference]: With dead ends: 3493 [2022-07-13 11:38:37,173 INFO L226 Difference]: Without dead ends: 1748 [2022-07-13 11:38:37,175 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 [2022-07-13 11:38:37,175 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:38:37,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 671 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 11:38:37,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2022-07-13 11:38:37,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1748. [2022-07-13 11:38:37,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1747 states have (on average 1.4499141385231826) internal successors, (2533), 1747 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:37,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2533 transitions. [2022-07-13 11:38:37,206 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2533 transitions. Word has length 166 [2022-07-13 11:38:37,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:38:37,207 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 2533 transitions. [2022-07-13 11:38:37,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:38:37,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2533 transitions. [2022-07-13 11:38:37,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-13 11:38:37,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:38:37,209 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] [2022-07-13 11:38:37,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 11:38:37,210 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:38:37,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:38:37,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1534397000, now seen corresponding path program 1 times [2022-07-13 11:38:37,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:38:37,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026522586] [2022-07-13 11:38:37,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:37,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:38:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 14 proven. 146 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 11:38:37,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:38:37,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026522586] [2022-07-13 11:38:37,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026522586] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:38:37,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887442018] [2022-07-13 11:38:37,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:38:37,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:38:37,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:38:37,866 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) [2022-07-13 11:38:37,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:38:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:38:38,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 175 conjunts are in the unsatisfiable core [2022-07-13 11:38:38,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:38:58,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:38:58,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:38:58,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:38:58,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:38:58,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:38:58,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:39:26,374 INFO L190 IndexEqualityManager]: detected not equals via solver