./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.11.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.11.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 d2558e20908ca51bd715f698f032e0721784debd5f3c1dc69de7f261de8133a0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:39:40,369 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:39:40,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:39:40,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:39:40,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:39:40,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:39:40,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:39:40,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:39:40,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:39:40,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:39:40,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:39:40,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:39:40,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:39:40,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:39:40,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:39:40,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:39:40,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:39:40,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:39:40,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:39:40,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:39:40,429 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:39:40,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:39:40,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:39:40,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:39:40,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:39:40,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:39:40,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:39:40,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:39:40,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:39:40,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:39:40,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:39:40,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:39:40,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:39:40,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:39:40,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:39:40,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:39:40,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:39:40,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:39:40,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:39:40,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:39:40,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:39:40,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:39:40,446 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:39:40,469 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:39:40,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:39:40,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:39:40,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:39:40,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:39:40,470 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:39:40,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:39:40,471 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:39:40,471 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:39:40,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:39:40,472 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:39:40,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:39:40,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:39:40,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:39:40,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:39:40,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:39:40,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:39:40,472 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:39:40,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:39:40,473 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:39:40,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:39:40,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:39:40,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:39:40,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:39:40,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:39:40,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:39:40,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:39:40,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:39:40,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:39:40,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:39:40,474 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:39:40,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:39:40,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:39:40,475 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2558e20908ca51bd715f698f032e0721784debd5f3c1dc69de7f261de8133a0 [2022-07-13 11:39:40,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:39:40,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:39:40,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:39:40,656 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:39:40,657 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:39:40,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-2.c [2022-07-13 11:39:40,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1c6479a/8a1cea6bdf9749e39c606833fb5d70bd/FLAGc77c5b2b5 [2022-07-13 11:39:41,104 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:39:41,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-2.c [2022-07-13 11:39:41,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1c6479a/8a1cea6bdf9749e39c606833fb5d70bd/FLAGc77c5b2b5 [2022-07-13 11:39:41,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa1c6479a/8a1cea6bdf9749e39c606833fb5d70bd [2022-07-13 11:39:41,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:39:41,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:39:41,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:39:41,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:39:41,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:39:41,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:39:41" (1/1) ... [2022-07-13 11:39:41,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a60758e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41, skipping insertion in model container [2022-07-13 11:39:41,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:39:41" (1/1) ... [2022-07-13 11:39:41,458 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:39:41,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:39:41,868 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.11.i.cil-2.c[74369,74382] [2022-07-13 11:39:41,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:39:41,889 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:39:41,969 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.11.i.cil-2.c[74369,74382] [2022-07-13 11:39:41,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:39:41,983 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:39:41,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41 WrapperNode [2022-07-13 11:39:41,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:39:41,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:39:41,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:39:41,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:39:41,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41" (1/1) ... [2022-07-13 11:39:42,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41" (1/1) ... [2022-07-13 11:39:42,063 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 792 [2022-07-13 11:39:42,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:39:42,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:39:42,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:39:42,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:39:42,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41" (1/1) ... [2022-07-13 11:39:42,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41" (1/1) ... [2022-07-13 11:39:42,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41" (1/1) ... [2022-07-13 11:39:42,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41" (1/1) ... [2022-07-13 11:39:42,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41" (1/1) ... [2022-07-13 11:39:42,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41" (1/1) ... [2022-07-13 11:39:42,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41" (1/1) ... [2022-07-13 11:39:42,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:39:42,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:39:42,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:39:42,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:39:42,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41" (1/1) ... [2022-07-13 11:39:42,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:39:42,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:39:42,167 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 11:39:42,169 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 11:39:42,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:39:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 11:39:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 11:39:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 11:39:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 11:39:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:39:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:39:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:39:42,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:39:42,313 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:39:42,314 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:39:42,324 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-13 11:39:44,007 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-13 11:39:44,008 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-13 11:39:44,008 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:39:44,013 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:39:44,013 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 11:39:44,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:39:44 BoogieIcfgContainer [2022-07-13 11:39:44,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:39:44,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:39:44,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:39:44,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:39:44,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:39:41" (1/3) ... [2022-07-13 11:39:44,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357f0bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:39:44, skipping insertion in model container [2022-07-13 11:39:44,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:39:41" (2/3) ... [2022-07-13 11:39:44,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357f0bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:39:44, skipping insertion in model container [2022-07-13 11:39:44,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:39:44" (3/3) ... [2022-07-13 11:39:44,021 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-2.c [2022-07-13 11:39:44,031 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:39:44,031 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:39:44,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:39:44,077 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@4979a245, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2b19a9f2 [2022-07-13 11:39:44,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:39:44,080 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 11:39:44,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-13 11:39:44,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:44,087 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 11:39:44,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:44,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash -442385417, now seen corresponding path program 1 times [2022-07-13 11:39:44,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:44,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317437049] [2022-07-13 11:39:44,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:44,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:44,511 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 11:39:44,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:44,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317437049] [2022-07-13 11:39:44,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317437049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:44,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:44,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:44,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194618640] [2022-07-13 11:39:44,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:44,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:44,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:44,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:44,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:44,545 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 11:39:45,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:45,099 INFO L93 Difference]: Finished difference Result 421 states and 717 transitions. [2022-07-13 11:39:45,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:45,102 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 11:39:45,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:45,111 INFO L225 Difference]: With dead ends: 421 [2022-07-13 11:39:45,113 INFO L226 Difference]: Without dead ends: 256 [2022-07-13 11:39:45,116 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 11:39:45,119 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 169 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:45,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 439 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:45,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-07-13 11:39:45,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 165. [2022-07-13 11:39:45,174 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 11:39:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 260 transitions. [2022-07-13 11:39:45,176 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 260 transitions. Word has length 37 [2022-07-13 11:39:45,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:45,177 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 260 transitions. [2022-07-13 11:39:45,177 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 11:39:45,177 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 260 transitions. [2022-07-13 11:39:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 11:39:45,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:45,180 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 11:39:45,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:39:45,181 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:45,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:45,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1559591931, now seen corresponding path program 1 times [2022-07-13 11:39:45,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:45,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274419642] [2022-07-13 11:39:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:45,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:45,374 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 11:39:45,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:45,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274419642] [2022-07-13 11:39:45,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274419642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:45,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:45,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:45,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425254659] [2022-07-13 11:39:45,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:45,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:45,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:45,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:45,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:45,381 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 11:39:46,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:46,045 INFO L93 Difference]: Finished difference Result 439 states and 692 transitions. [2022-07-13 11:39:46,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:46,045 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 11:39:46,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:46,047 INFO L225 Difference]: With dead ends: 439 [2022-07-13 11:39:46,050 INFO L226 Difference]: Without dead ends: 284 [2022-07-13 11:39:46,051 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 11:39:46,052 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 134 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:46,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 330 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-07-13 11:39:46,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 194. [2022-07-13 11:39:46,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.616580310880829) internal successors, (312), 193 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 11:39:46,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 312 transitions. [2022-07-13 11:39:46,065 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 312 transitions. Word has length 38 [2022-07-13 11:39:46,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:46,066 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 312 transitions. [2022-07-13 11:39:46,066 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 11:39:46,067 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 312 transitions. [2022-07-13 11:39:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 11:39:46,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:46,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:46,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:39:46,073 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:46,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:46,073 INFO L85 PathProgramCache]: Analyzing trace with hash 917746377, now seen corresponding path program 1 times [2022-07-13 11:39:46,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:46,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018485031] [2022-07-13 11:39:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:46,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:46,208 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 11:39:46,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:46,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018485031] [2022-07-13 11:39:46,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018485031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:46,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:46,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:46,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976661107] [2022-07-13 11:39:46,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:46,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:46,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:46,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:46,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:46,209 INFO L87 Difference]: Start difference. First operand 194 states and 312 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:47,047 INFO L93 Difference]: Finished difference Result 406 states and 651 transitions. [2022-07-13 11:39:47,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:47,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-07-13 11:39:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:47,051 INFO L225 Difference]: With dead ends: 406 [2022-07-13 11:39:47,051 INFO L226 Difference]: Without dead ends: 222 [2022-07-13 11:39:47,054 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 11:39:47,056 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 22 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:47,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 469 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:39:47,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-13 11:39:47,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2022-07-13 11:39:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.6225490196078431) internal successors, (331), 204 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 11:39:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 331 transitions. [2022-07-13 11:39:47,076 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 331 transitions. Word has length 44 [2022-07-13 11:39:47,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:47,077 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 331 transitions. [2022-07-13 11:39:47,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:47,078 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 331 transitions. [2022-07-13 11:39:47,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-13 11:39:47,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:47,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:47,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 11:39:47,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:47,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:47,082 INFO L85 PathProgramCache]: Analyzing trace with hash 868700126, now seen corresponding path program 1 times [2022-07-13 11:39:47,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:47,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687241037] [2022-07-13 11:39:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:47,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:47,204 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 11:39:47,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:47,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687241037] [2022-07-13 11:39:47,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687241037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:47,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:47,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:47,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127891573] [2022-07-13 11:39:47,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:47,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:47,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:47,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:47,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:47,211 INFO L87 Difference]: Start difference. First operand 205 states and 331 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:39:47,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:47,623 INFO L93 Difference]: Finished difference Result 406 states and 650 transitions. [2022-07-13 11:39:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:47,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-13 11:39:47,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:47,625 INFO L225 Difference]: With dead ends: 406 [2022-07-13 11:39:47,625 INFO L226 Difference]: Without dead ends: 222 [2022-07-13 11:39:47,625 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 11:39:47,628 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 24 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:47,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 471 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:39:47,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-13 11:39:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 205. [2022-07-13 11:39:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.6176470588235294) internal successors, (330), 204 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 11:39:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 330 transitions. [2022-07-13 11:39:47,641 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 330 transitions. Word has length 57 [2022-07-13 11:39:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:47,642 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 330 transitions. [2022-07-13 11:39:47,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 11:39:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 330 transitions. [2022-07-13 11:39:47,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-13 11:39:47,647 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:47,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:47,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 11:39:47,648 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:47,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:47,649 INFO L85 PathProgramCache]: Analyzing trace with hash 642771885, now seen corresponding path program 1 times [2022-07-13 11:39:47,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:47,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684525561] [2022-07-13 11:39:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:47,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:47,725 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 11:39:47,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:47,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684525561] [2022-07-13 11:39:47,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684525561] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:47,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:47,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:47,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760690253] [2022-07-13 11:39:47,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:47,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:47,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:47,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:47,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:47,728 INFO L87 Difference]: Start difference. First operand 205 states and 330 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:48,481 INFO L93 Difference]: Finished difference Result 405 states and 648 transitions. [2022-07-13 11:39:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:48,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-13 11:39:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:48,483 INFO L225 Difference]: With dead ends: 405 [2022-07-13 11:39:48,483 INFO L226 Difference]: Without dead ends: 221 [2022-07-13 11:39:48,483 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 11:39:48,484 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 28 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:48,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 473 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:39:48,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-07-13 11:39:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 205. [2022-07-13 11:39:48,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.6127450980392157) internal successors, (329), 204 states have internal predecessors, (329), 0 states have call successors, (0), 0 states 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 11:39:48,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 329 transitions. [2022-07-13 11:39:48,488 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 329 transitions. Word has length 58 [2022-07-13 11:39:48,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:48,488 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 329 transitions. [2022-07-13 11:39:48,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:48,488 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 329 transitions. [2022-07-13 11:39:48,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-13 11:39:48,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:48,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:48,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:39:48,489 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:48,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash -404738919, now seen corresponding path program 1 times [2022-07-13 11:39:48,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:48,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546133165] [2022-07-13 11:39:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:48,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:48,612 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 11:39:48,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:48,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546133165] [2022-07-13 11:39:48,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546133165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:48,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:48,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:48,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111358234] [2022-07-13 11:39:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:48,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:48,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:48,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:48,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:48,615 INFO L87 Difference]: Start difference. First operand 205 states and 329 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:49,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:49,362 INFO L93 Difference]: Finished difference Result 479 states and 760 transitions. [2022-07-13 11:39:49,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:49,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-13 11:39:49,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:49,365 INFO L225 Difference]: With dead ends: 479 [2022-07-13 11:39:49,365 INFO L226 Difference]: Without dead ends: 295 [2022-07-13 11:39:49,365 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 11:39:49,366 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 150 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:49,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 330 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:39:49,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-13 11:39:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 205. [2022-07-13 11:39:49,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5980392156862746) internal successors, (326), 204 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 11:39:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 326 transitions. [2022-07-13 11:39:49,370 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 326 transitions. Word has length 58 [2022-07-13 11:39:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:49,370 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 326 transitions. [2022-07-13 11:39:49,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 326 transitions. [2022-07-13 11:39:49,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-13 11:39:49,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:49,371 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:49,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:39:49,371 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:49,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:49,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1540605214, now seen corresponding path program 1 times [2022-07-13 11:39:49,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:49,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223974100] [2022-07-13 11:39:49,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:49,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:49,453 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 11:39:49,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:49,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223974100] [2022-07-13 11:39:49,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223974100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:49,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:49,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:49,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871320074] [2022-07-13 11:39:49,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:49,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:49,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:49,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:49,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:49,455 INFO L87 Difference]: Start difference. First operand 205 states and 326 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:50,223 INFO L93 Difference]: Finished difference Result 478 states and 754 transitions. [2022-07-13 11:39:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:50,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-13 11:39:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:50,225 INFO L225 Difference]: With dead ends: 478 [2022-07-13 11:39:50,225 INFO L226 Difference]: Without dead ends: 294 [2022-07-13 11:39:50,226 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 11:39:50,226 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:50,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:39:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-13 11:39:50,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2022-07-13 11:39:50,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5833333333333333) internal successors, (323), 204 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 11:39:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 323 transitions. [2022-07-13 11:39:50,230 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 323 transitions. Word has length 58 [2022-07-13 11:39:50,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:50,231 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 323 transitions. [2022-07-13 11:39:50,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:50,231 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 323 transitions. [2022-07-13 11:39:50,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-13 11:39:50,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:50,231 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:50,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 11:39:50,232 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:50,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:50,232 INFO L85 PathProgramCache]: Analyzing trace with hash -219751902, now seen corresponding path program 1 times [2022-07-13 11:39:50,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:50,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24155174] [2022-07-13 11:39:50,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:50,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:50,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:50,331 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 11:39:50,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:50,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24155174] [2022-07-13 11:39:50,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24155174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:50,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:50,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:50,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525435893] [2022-07-13 11:39:50,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:50,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:50,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:50,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:50,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:50,333 INFO L87 Difference]: Start difference. First operand 205 states and 323 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:50,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:50,894 INFO L93 Difference]: Finished difference Result 478 states and 749 transitions. [2022-07-13 11:39:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:50,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-13 11:39:50,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:50,895 INFO L225 Difference]: With dead ends: 478 [2022-07-13 11:39:50,895 INFO L226 Difference]: Without dead ends: 294 [2022-07-13 11:39:50,896 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 11:39:50,896 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:50,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:50,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-13 11:39:50,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2022-07-13 11:39:50,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5686274509803921) internal successors, (320), 204 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 11:39:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 320 transitions. [2022-07-13 11:39:50,900 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 320 transitions. Word has length 58 [2022-07-13 11:39:50,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:50,900 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 320 transitions. [2022-07-13 11:39:50,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 320 transitions. [2022-07-13 11:39:50,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-13 11:39:50,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:50,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:50,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:39:50,901 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1716593643, now seen corresponding path program 1 times [2022-07-13 11:39:50,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:50,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892806571] [2022-07-13 11:39:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:50,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:50,978 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 11:39:50,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:50,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892806571] [2022-07-13 11:39:50,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892806571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:50,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:50,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:50,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646571331] [2022-07-13 11:39:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:50,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:50,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:50,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:50,980 INFO L87 Difference]: Start difference. First operand 205 states and 320 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:51,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:51,601 INFO L93 Difference]: Finished difference Result 478 states and 744 transitions. [2022-07-13 11:39:51,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:51,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-13 11:39:51,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:51,603 INFO L225 Difference]: With dead ends: 478 [2022-07-13 11:39:51,603 INFO L226 Difference]: Without dead ends: 294 [2022-07-13 11:39:51,604 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 11:39:51,604 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 146 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:51,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:51,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-13 11:39:51,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2022-07-13 11:39:51,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.553921568627451) internal successors, (317), 204 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 11:39:51,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 317 transitions. [2022-07-13 11:39:51,627 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 317 transitions. Word has length 59 [2022-07-13 11:39:51,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:51,627 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 317 transitions. [2022-07-13 11:39:51,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:51,628 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 317 transitions. [2022-07-13 11:39:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-13 11:39:51,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:51,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:51,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:39:51,629 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:51,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:51,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1056186316, now seen corresponding path program 1 times [2022-07-13 11:39:51,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:51,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312753488] [2022-07-13 11:39:51,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:51,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:51,711 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 11:39:51,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:51,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312753488] [2022-07-13 11:39:51,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312753488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:51,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:51,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:51,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687506102] [2022-07-13 11:39:51,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:51,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:51,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:51,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:51,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:51,713 INFO L87 Difference]: Start difference. First operand 205 states and 317 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:52,254 INFO L93 Difference]: Finished difference Result 402 states and 624 transitions. [2022-07-13 11:39:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:52,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-07-13 11:39:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:52,256 INFO L225 Difference]: With dead ends: 402 [2022-07-13 11:39:52,256 INFO L226 Difference]: Without dead ends: 218 [2022-07-13 11:39:52,256 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 11:39:52,257 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 20 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:52,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 479 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:39:52,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-13 11:39:52,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 205. [2022-07-13 11:39:52,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5490196078431373) internal successors, (316), 204 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 11:39:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 316 transitions. [2022-07-13 11:39:52,261 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 316 transitions. Word has length 60 [2022-07-13 11:39:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:52,261 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 316 transitions. [2022-07-13 11:39:52,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:52,261 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 316 transitions. [2022-07-13 11:39:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-13 11:39:52,261 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:52,261 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:52,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 11:39:52,262 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:52,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:52,262 INFO L85 PathProgramCache]: Analyzing trace with hash 614802448, now seen corresponding path program 1 times [2022-07-13 11:39:52,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:52,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882197921] [2022-07-13 11:39:52,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:52,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:52,328 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 11:39:52,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:52,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882197921] [2022-07-13 11:39:52,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882197921] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:52,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:52,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:52,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712223769] [2022-07-13 11:39:52,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:52,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:52,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:52,330 INFO L87 Difference]: Start difference. First operand 205 states and 316 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:52,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:52,777 INFO L93 Difference]: Finished difference Result 478 states and 738 transitions. [2022-07-13 11:39:52,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:52,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-13 11:39:52,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:52,779 INFO L225 Difference]: With dead ends: 478 [2022-07-13 11:39:52,779 INFO L226 Difference]: Without dead ends: 294 [2022-07-13 11:39:52,779 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 11:39:52,780 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 143 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:52,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:39:52,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-07-13 11:39:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 205. [2022-07-13 11:39:52,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.5343137254901962) internal successors, (313), 204 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 11:39:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 313 transitions. [2022-07-13 11:39:52,784 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 313 transitions. Word has length 61 [2022-07-13 11:39:52,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:52,784 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 313 transitions. [2022-07-13 11:39:52,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 313 transitions. [2022-07-13 11:39:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-13 11:39:52,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:52,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:52,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 11:39:52,785 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:52,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:52,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1287801256, now seen corresponding path program 1 times [2022-07-13 11:39:52,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:52,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777969650] [2022-07-13 11:39:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:52,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:52,864 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 11:39:52,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:52,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777969650] [2022-07-13 11:39:52,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777969650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:52,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:52,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026314311] [2022-07-13 11:39:52,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:52,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:52,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:52,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:52,866 INFO L87 Difference]: Start difference. First operand 205 states and 313 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:53,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:39:54,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:54,148 INFO L93 Difference]: Finished difference Result 508 states and 780 transitions. [2022-07-13 11:39:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:54,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-13 11:39:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:54,150 INFO L225 Difference]: With dead ends: 508 [2022-07-13 11:39:54,150 INFO L226 Difference]: Without dead ends: 324 [2022-07-13 11:39:54,150 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 11:39:54,151 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 119 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:54,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 332 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 11:39:54,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-07-13 11:39:54,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 245. [2022-07-13 11:39:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.5532786885245902) internal successors, (379), 244 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:54,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 379 transitions. [2022-07-13 11:39:54,155 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 379 transitions. Word has length 61 [2022-07-13 11:39:54,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:54,156 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 379 transitions. [2022-07-13 11:39:54,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:54,156 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 379 transitions. [2022-07-13 11:39:54,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-13 11:39:54,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:54,156 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:54,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 11:39:54,156 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:54,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1049026987, now seen corresponding path program 1 times [2022-07-13 11:39:54,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:54,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784244602] [2022-07-13 11:39:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:54,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:54,222 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 11:39:54,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:54,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784244602] [2022-07-13 11:39:54,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784244602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:54,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:54,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:54,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496083843] [2022-07-13 11:39:54,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:54,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:54,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:54,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:54,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:54,224 INFO L87 Difference]: Start difference. First operand 245 states and 379 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:56,236 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 11:39:56,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:56,433 INFO L93 Difference]: Finished difference Result 511 states and 793 transitions. [2022-07-13 11:39:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:56,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-13 11:39:56,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:56,435 INFO L225 Difference]: With dead ends: 511 [2022-07-13 11:39:56,435 INFO L226 Difference]: Without dead ends: 287 [2022-07-13 11:39:56,436 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 11:39:56,436 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 29 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:56,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 493 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 165 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:39:56,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-07-13 11:39:56,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 267. [2022-07-13 11:39:56,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5488721804511278) internal successors, (412), 266 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 412 transitions. [2022-07-13 11:39:56,441 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 412 transitions. Word has length 62 [2022-07-13 11:39:56,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:56,441 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 412 transitions. [2022-07-13 11:39:56,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:56,441 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 412 transitions. [2022-07-13 11:39:56,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 11:39:56,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:56,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:56,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 11:39:56,442 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:56,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:56,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1947485908, now seen corresponding path program 1 times [2022-07-13 11:39:56,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:56,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226332049] [2022-07-13 11:39:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:56,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:56,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:56,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226332049] [2022-07-13 11:39:56,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226332049] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:56,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:56,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:56,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093136572] [2022-07-13 11:39:56,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:56,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:56,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:56,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:56,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:56,562 INFO L87 Difference]: Start difference. First operand 267 states and 412 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 11:39:57,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:57,721 INFO L93 Difference]: Finished difference Result 531 states and 823 transitions. [2022-07-13 11:39:57,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:57,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 75 [2022-07-13 11:39:57,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:57,723 INFO L225 Difference]: With dead ends: 531 [2022-07-13 11:39:57,723 INFO L226 Difference]: Without dead ends: 285 [2022-07-13 11:39:57,723 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 11:39:57,723 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 34 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:57,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 497 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 11:39:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-07-13 11:39:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 267. [2022-07-13 11:39:57,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5451127819548873) internal successors, (411), 266 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 11:39:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 411 transitions. [2022-07-13 11:39:57,728 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 411 transitions. Word has length 75 [2022-07-13 11:39:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:57,728 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 411 transitions. [2022-07-13 11:39:57,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 11:39:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 411 transitions. [2022-07-13 11:39:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-13 11:39:57,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:57,729 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:57,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 11:39:57,729 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:57,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:57,730 INFO L85 PathProgramCache]: Analyzing trace with hash -655331449, now seen corresponding path program 1 times [2022-07-13 11:39:57,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:57,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623361979] [2022-07-13 11:39:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:57,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:57,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:57,826 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:57,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:57,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623361979] [2022-07-13 11:39:57,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623361979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:57,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:57,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:57,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37623485] [2022-07-13 11:39:57,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:57,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:57,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:57,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:57,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:57,828 INFO L87 Difference]: Start difference. First operand 267 states and 411 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:58,206 INFO L93 Difference]: Finished difference Result 530 states and 820 transitions. [2022-07-13 11:39:58,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:58,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-07-13 11:39:58,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:58,208 INFO L225 Difference]: With dead ends: 530 [2022-07-13 11:39:58,208 INFO L226 Difference]: Without dead ends: 284 [2022-07-13 11:39:58,208 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 11:39:58,208 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 38 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:58,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 499 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:39:58,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-07-13 11:39:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 267. [2022-07-13 11:39:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5413533834586466) internal successors, (410), 266 states have internal predecessors, (410), 0 states have call successors, (0), 0 states 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 11:39:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 410 transitions. [2022-07-13 11:39:58,213 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 410 transitions. Word has length 76 [2022-07-13 11:39:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:58,213 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 410 transitions. [2022-07-13 11:39:58,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:58,213 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 410 transitions. [2022-07-13 11:39:58,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-13 11:39:58,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:58,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:58,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 11:39:58,214 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:58,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:58,215 INFO L85 PathProgramCache]: Analyzing trace with hash 280248224, now seen corresponding path program 1 times [2022-07-13 11:39:58,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:58,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897830949] [2022-07-13 11:39:58,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:58,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:39:58,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:58,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897830949] [2022-07-13 11:39:58,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897830949] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:58,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:58,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:58,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184317849] [2022-07-13 11:39:58,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:58,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:58,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:58,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:58,335 INFO L87 Difference]: Start difference. First operand 267 states and 410 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:58,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:58,958 INFO L93 Difference]: Finished difference Result 602 states and 927 transitions. [2022-07-13 11:39:58,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:58,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-07-13 11:39:58,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:58,960 INFO L225 Difference]: With dead ends: 602 [2022-07-13 11:39:58,960 INFO L226 Difference]: Without dead ends: 356 [2022-07-13 11:39:58,960 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 11:39:58,961 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 144 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:58,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 334 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-07-13 11:39:58,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 267. [2022-07-13 11:39:58,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.5263157894736843) internal successors, (406), 266 states have internal predecessors, (406), 0 states have call successors, (0), 0 states 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 11:39:58,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 406 transitions. [2022-07-13 11:39:58,965 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 406 transitions. Word has length 78 [2022-07-13 11:39:58,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:58,965 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 406 transitions. [2022-07-13 11:39:58,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:58,966 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 406 transitions. [2022-07-13 11:39:58,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 11:39:58,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:58,966 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:58,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 11:39:58,966 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:58,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1344832479, now seen corresponding path program 1 times [2022-07-13 11:39:58,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:58,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647890225] [2022-07-13 11:39:58,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:58,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:59,039 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 11:39:59,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:59,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647890225] [2022-07-13 11:39:59,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647890225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:59,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:59,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:59,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933882659] [2022-07-13 11:39:59,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:59,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:59,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:59,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:59,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:59,041 INFO L87 Difference]: Start difference. First operand 267 states and 406 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:59,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:39:59,661 INFO L93 Difference]: Finished difference Result 603 states and 918 transitions. [2022-07-13 11:39:59,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:39:59,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-07-13 11:39:59,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:39:59,663 INFO L225 Difference]: With dead ends: 603 [2022-07-13 11:39:59,664 INFO L226 Difference]: Without dead ends: 357 [2022-07-13 11:39:59,664 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 11:39:59,664 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 67 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:39:59,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 469 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:39:59,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2022-07-13 11:39:59,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 309. [2022-07-13 11:39:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.5357142857142858) internal successors, (473), 308 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 11:39:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 473 transitions. [2022-07-13 11:39:59,669 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 473 transitions. Word has length 84 [2022-07-13 11:39:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:39:59,669 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 473 transitions. [2022-07-13 11:39:59,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:39:59,670 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 473 transitions. [2022-07-13 11:39:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 11:39:59,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:39:59,670 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:39:59,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 11:39:59,670 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:39:59,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:39:59,671 INFO L85 PathProgramCache]: Analyzing trace with hash -921185757, now seen corresponding path program 1 times [2022-07-13 11:39:59,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:39:59,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596131023] [2022-07-13 11:39:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:39:59,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:39:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:39:59,765 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 11:39:59,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:39:59,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596131023] [2022-07-13 11:39:59,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596131023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:39:59,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:39:59,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:39:59,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603998293] [2022-07-13 11:39:59,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:39:59,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:39:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:39:59,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:39:59,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:39:59,767 INFO L87 Difference]: Start difference. First operand 309 states and 473 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:00,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:00,180 INFO L93 Difference]: Finished difference Result 646 states and 991 transitions. [2022-07-13 11:40:00,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:00,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-07-13 11:40:00,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:00,182 INFO L225 Difference]: With dead ends: 646 [2022-07-13 11:40:00,182 INFO L226 Difference]: Without dead ends: 358 [2022-07-13 11:40:00,182 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 11:40:00,183 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 36 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:00,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 591 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:40:00,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-13 11:40:00,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 333. [2022-07-13 11:40:00,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.533132530120482) internal successors, (509), 332 states have internal predecessors, (509), 0 states have call successors, (0), 0 states 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 11:40:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 509 transitions. [2022-07-13 11:40:00,189 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 509 transitions. Word has length 84 [2022-07-13 11:40:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:00,189 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 509 transitions. [2022-07-13 11:40:00,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 509 transitions. [2022-07-13 11:40:00,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 11:40:00,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:00,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:00,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 11:40:00,191 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:00,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:00,191 INFO L85 PathProgramCache]: Analyzing trace with hash 742972446, now seen corresponding path program 1 times [2022-07-13 11:40:00,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:00,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181387559] [2022-07-13 11:40:00,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:00,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:40:00,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:00,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181387559] [2022-07-13 11:40:00,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181387559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:00,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:00,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:00,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872716531] [2022-07-13 11:40:00,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:00,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:00,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:00,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:00,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:00,266 INFO L87 Difference]: Start difference. First operand 333 states and 509 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 11:40:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:00,828 INFO L93 Difference]: Finished difference Result 771 states and 1187 transitions. [2022-07-13 11:40:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:00,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 97 [2022-07-13 11:40:00,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:00,830 INFO L225 Difference]: With dead ends: 771 [2022-07-13 11:40:00,830 INFO L226 Difference]: Without dead ends: 459 [2022-07-13 11:40:00,831 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 11:40:00,831 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 141 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:00,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 362 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:40:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-07-13 11:40:00,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 349. [2022-07-13 11:40:00,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.514367816091954) internal successors, (527), 348 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 11:40:00,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 527 transitions. [2022-07-13 11:40:00,837 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 527 transitions. Word has length 97 [2022-07-13 11:40:00,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:00,837 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 527 transitions. [2022-07-13 11:40:00,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states 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 11:40:00,837 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 527 transitions. [2022-07-13 11:40:00,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 11:40:00,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:00,838 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:00,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 11:40:00,838 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:00,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:00,839 INFO L85 PathProgramCache]: Analyzing trace with hash 659456893, now seen corresponding path program 1 times [2022-07-13 11:40:00,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:00,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634629946] [2022-07-13 11:40:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:00,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:40:00,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:00,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634629946] [2022-07-13 11:40:00,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634629946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:00,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:00,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:00,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922845514] [2022-07-13 11:40:00,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:00,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:00,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:00,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:00,911 INFO L87 Difference]: Start difference. First operand 349 states and 527 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 11:40:02,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:02,055 INFO L93 Difference]: Finished difference Result 755 states and 1147 transitions. [2022-07-13 11:40:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:02,056 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 98 [2022-07-13 11:40:02,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:02,057 INFO L225 Difference]: With dead ends: 755 [2022-07-13 11:40:02,057 INFO L226 Difference]: Without dead ends: 427 [2022-07-13 11:40:02,058 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 11:40:02,058 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 139 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:02,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 356 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 11:40:02,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-07-13 11:40:02,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 349. [2022-07-13 11:40:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4971264367816093) internal successors, (521), 348 states have internal predecessors, (521), 0 states have call successors, (0), 0 states 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 11:40:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 521 transitions. [2022-07-13 11:40:02,064 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 521 transitions. Word has length 98 [2022-07-13 11:40:02,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:02,064 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 521 transitions. [2022-07-13 11:40:02,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 11:40:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 521 transitions. [2022-07-13 11:40:02,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 11:40:02,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:02,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:02,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 11:40:02,065 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:02,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:02,065 INFO L85 PathProgramCache]: Analyzing trace with hash 280390343, now seen corresponding path program 1 times [2022-07-13 11:40:02,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:02,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091432907] [2022-07-13 11:40:02,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:02,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:02,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:02,144 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:40:02,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:02,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091432907] [2022-07-13 11:40:02,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091432907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:02,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:02,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:02,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939766687] [2022-07-13 11:40:02,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:02,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:02,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:02,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:02,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:02,146 INFO L87 Difference]: Start difference. First operand 349 states and 521 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 11:40:02,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:02,929 INFO L93 Difference]: Finished difference Result 712 states and 1064 transitions. [2022-07-13 11:40:02,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:02,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 104 [2022-07-13 11:40:02,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:02,931 INFO L225 Difference]: With dead ends: 712 [2022-07-13 11:40:02,931 INFO L226 Difference]: Without dead ends: 384 [2022-07-13 11:40:02,931 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 11:40:02,932 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 71 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:02,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 489 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:40:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-13 11:40:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 349. [2022-07-13 11:40:02,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4942528735632183) internal successors, (520), 348 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 11:40:02,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 520 transitions. [2022-07-13 11:40:02,937 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 520 transitions. Word has length 104 [2022-07-13 11:40:02,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:02,937 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 520 transitions. [2022-07-13 11:40:02,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 11:40:02,938 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 520 transitions. [2022-07-13 11:40:02,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 11:40:02,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:02,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:02,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 11:40:02,939 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:02,939 INFO L85 PathProgramCache]: Analyzing trace with hash 509759261, now seen corresponding path program 1 times [2022-07-13 11:40:02,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:02,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010337628] [2022-07-13 11:40:02,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:02,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:40:03,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:03,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010337628] [2022-07-13 11:40:03,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010337628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:03,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:03,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:03,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449064839] [2022-07-13 11:40:03,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:03,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:03,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:03,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:03,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:03,018 INFO L87 Difference]: Start difference. First operand 349 states and 520 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 11:40:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:03,566 INFO L93 Difference]: Finished difference Result 710 states and 1059 transitions. [2022-07-13 11:40:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:03,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 105 [2022-07-13 11:40:03,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:03,568 INFO L225 Difference]: With dead ends: 710 [2022-07-13 11:40:03,568 INFO L226 Difference]: Without dead ends: 382 [2022-07-13 11:40:03,568 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 11:40:03,568 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 68 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:03,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 495 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:40:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-13 11:40:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 349. [2022-07-13 11:40:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4913793103448276) internal successors, (519), 348 states have internal predecessors, (519), 0 states have call successors, (0), 0 states 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 11:40:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 519 transitions. [2022-07-13 11:40:03,574 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 519 transitions. Word has length 105 [2022-07-13 11:40:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:03,574 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 519 transitions. [2022-07-13 11:40:03,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 11:40:03,574 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 519 transitions. [2022-07-13 11:40:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 11:40:03,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:03,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:40:03,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 11:40:03,575 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:03,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:03,576 INFO L85 PathProgramCache]: Analyzing trace with hash -213108826, now seen corresponding path program 1 times [2022-07-13 11:40:03,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:03,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172560970] [2022-07-13 11:40:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:03,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-13 11:40:03,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:03,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172560970] [2022-07-13 11:40:03,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172560970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:03,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:03,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:03,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583804759] [2022-07-13 11:40:03,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:03,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:03,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:03,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:03,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:03,649 INFO L87 Difference]: Start difference. First operand 349 states and 519 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 11:40:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:04,039 INFO L93 Difference]: Finished difference Result 707 states and 1053 transitions. [2022-07-13 11:40:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:04,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 105 [2022-07-13 11:40:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:04,041 INFO L225 Difference]: With dead ends: 707 [2022-07-13 11:40:04,041 INFO L226 Difference]: Without dead ends: 379 [2022-07-13 11:40:04,041 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 11:40:04,042 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 61 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:04,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 501 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:40:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-07-13 11:40:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 349. [2022-07-13 11:40:04,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4885057471264367) internal successors, (518), 348 states have internal predecessors, (518), 0 states have call successors, (0), 0 states 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 11:40:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 518 transitions. [2022-07-13 11:40:04,047 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 518 transitions. Word has length 105 [2022-07-13 11:40:04,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:04,047 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 518 transitions. [2022-07-13 11:40:04,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states 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 11:40:04,048 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 518 transitions. [2022-07-13 11:40:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 11:40:04,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:04,049 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 11:40:04,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 11:40:04,049 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:04,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:04,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1295545029, now seen corresponding path program 1 times [2022-07-13 11:40:04,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:04,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478751638] [2022-07-13 11:40:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:04,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:04,121 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 11:40:04,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:04,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478751638] [2022-07-13 11:40:04,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478751638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:04,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:04,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:04,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581979645] [2022-07-13 11:40:04,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:04,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:04,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:04,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:04,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:04,123 INFO L87 Difference]: Start difference. First operand 349 states and 518 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:04,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:04,741 INFO L93 Difference]: Finished difference Result 755 states and 1129 transitions. [2022-07-13 11:40:04,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:04,742 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-13 11:40:04,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:04,743 INFO L225 Difference]: With dead ends: 755 [2022-07-13 11:40:04,743 INFO L226 Difference]: Without dead ends: 427 [2022-07-13 11:40:04,744 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 11:40:04,744 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 125 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:04,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 368 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:40:04,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-07-13 11:40:04,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 349. [2022-07-13 11:40:04,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.4770114942528736) internal successors, (514), 348 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:04,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 514 transitions. [2022-07-13 11:40:04,749 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 514 transitions. Word has length 106 [2022-07-13 11:40:04,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:04,750 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 514 transitions. [2022-07-13 11:40:04,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:04,750 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 514 transitions. [2022-07-13 11:40:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 11:40:04,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:04,751 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 11:40:04,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 11:40:04,751 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:04,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:04,752 INFO L85 PathProgramCache]: Analyzing trace with hash 878148423, now seen corresponding path program 1 times [2022-07-13 11:40:04,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:04,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942722074] [2022-07-13 11:40:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:04,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:04,838 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 11:40:04,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:04,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942722074] [2022-07-13 11:40:04,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942722074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:04,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:04,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:40:04,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680389324] [2022-07-13 11:40:04,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:04,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:40:04,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:04,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:40:04,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:40:04,841 INFO L87 Difference]: Start difference. First operand 349 states and 514 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:04,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:04,868 INFO L93 Difference]: Finished difference Result 1000 states and 1488 transitions. [2022-07-13 11:40:04,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:40:04,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-13 11:40:04,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:04,870 INFO L225 Difference]: With dead ends: 1000 [2022-07-13 11:40:04,870 INFO L226 Difference]: Without dead ends: 672 [2022-07-13 11:40:04,872 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 11:40:04,875 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 136 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 428 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 11:40:04,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 428 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:40:04,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-07-13 11:40:04,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2022-07-13 11:40:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 1.473919523099851) internal successors, (989), 671 states have internal predecessors, (989), 0 states have call successors, (0), 0 states 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 11:40:04,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 989 transitions. [2022-07-13 11:40:04,887 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 989 transitions. Word has length 106 [2022-07-13 11:40:04,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:04,887 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 989 transitions. [2022-07-13 11:40:04,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:04,888 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 989 transitions. [2022-07-13 11:40:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 11:40:04,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:04,889 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 11:40:04,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 11:40:04,889 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:04,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:04,890 INFO L85 PathProgramCache]: Analyzing trace with hash -808031415, now seen corresponding path program 1 times [2022-07-13 11:40:04,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:04,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826630273] [2022-07-13 11:40:04,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:04,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:04,947 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 11:40:04,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:04,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826630273] [2022-07-13 11:40:04,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826630273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:04,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:04,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:40:04,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865074939] [2022-07-13 11:40:04,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:04,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:40:04,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:04,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:40:04,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:40:04,950 INFO L87 Difference]: Start difference. First operand 672 states and 989 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 11:40:04,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:04,970 INFO L93 Difference]: Finished difference Result 1350 states and 1990 transitions. [2022-07-13 11:40:04,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:40:04,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 11:40:04,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:04,973 INFO L225 Difference]: With dead ends: 1350 [2022-07-13 11:40:04,973 INFO L226 Difference]: Without dead ends: 699 [2022-07-13 11:40:04,974 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 11:40:04,974 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 11:40:04,975 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 11:40:04,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-13 11:40:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2022-07-13 11:40:04,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.4670487106017192) internal successors, (1024), 698 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states 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 11:40:04,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1024 transitions. [2022-07-13 11:40:04,985 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1024 transitions. Word has length 106 [2022-07-13 11:40:04,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:04,985 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1024 transitions. [2022-07-13 11:40:04,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 11:40:04,985 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1024 transitions. [2022-07-13 11:40:04,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 11:40:04,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:04,986 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 11:40:04,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 11:40:04,987 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:04,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:04,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1068451403, now seen corresponding path program 1 times [2022-07-13 11:40:04,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:04,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44728887] [2022-07-13 11:40:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:04,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:05,039 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 11:40:05,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:05,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44728887] [2022-07-13 11:40:05,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44728887] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:05,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:05,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:40:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016899665] [2022-07-13 11:40:05,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:05,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:40:05,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:05,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:40:05,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:40:05,042 INFO L87 Difference]: Start difference. First operand 699 states and 1024 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 11:40:05,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:05,076 INFO L93 Difference]: Finished difference Result 1379 states and 2026 transitions. [2022-07-13 11:40:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:40:05,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 106 [2022-07-13 11:40:05,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:05,078 INFO L225 Difference]: With dead ends: 1379 [2022-07-13 11:40:05,078 INFO L226 Difference]: Without dead ends: 701 [2022-07-13 11:40:05,079 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 11:40:05,081 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 11:40:05,081 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 11:40:05,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2022-07-13 11:40:05,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2022-07-13 11:40:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 1.4657142857142857) internal successors, (1026), 700 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states 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 11:40:05,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1026 transitions. [2022-07-13 11:40:05,091 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1026 transitions. Word has length 106 [2022-07-13 11:40:05,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:05,091 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1026 transitions. [2022-07-13 11:40:05,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 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 11:40:05,091 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1026 transitions. [2022-07-13 11:40:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 11:40:05,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:05,092 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, 1, 1] [2022-07-13 11:40:05,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 11:40:05,093 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:05,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -414944271, now seen corresponding path program 1 times [2022-07-13 11:40:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:05,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920977645] [2022-07-13 11:40:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:05,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:05,164 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 11:40:05,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:05,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920977645] [2022-07-13 11:40:05,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920977645] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:05,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:05,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:40:05,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754119273] [2022-07-13 11:40:05,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:05,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:40:05,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:05,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:40:05,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:40:05,166 INFO L87 Difference]: Start difference. First operand 701 states and 1026 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 11:40:05,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:05,202 INFO L93 Difference]: Finished difference Result 1707 states and 2514 transitions. [2022-07-13 11:40:05,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:40:05,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 108 [2022-07-13 11:40:05,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:05,205 INFO L225 Difference]: With dead ends: 1707 [2022-07-13 11:40:05,205 INFO L226 Difference]: Without dead ends: 1029 [2022-07-13 11:40:05,206 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 11:40:05,206 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 148 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:05,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 569 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:40:05,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-07-13 11:40:05,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1027. [2022-07-13 11:40:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 1.4688109161793372) internal successors, (1507), 1026 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states 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 11:40:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1507 transitions. [2022-07-13 11:40:05,222 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1507 transitions. Word has length 108 [2022-07-13 11:40:05,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:05,222 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 1507 transitions. [2022-07-13 11:40:05,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 11:40:05,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1507 transitions. [2022-07-13 11:40:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-13 11:40:05,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:05,224 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, 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 11:40:05,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 11:40:05,224 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2063160218, now seen corresponding path program 1 times [2022-07-13 11:40:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:05,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449911734] [2022-07-13 11:40:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:05,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-13 11:40:05,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:05,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449911734] [2022-07-13 11:40:05,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449911734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:05,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:05,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:40:05,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239642849] [2022-07-13 11:40:05,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:05,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:40:05,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:05,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:40:05,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:40:05,305 INFO L87 Difference]: Start difference. First operand 1027 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:05,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:05,342 INFO L93 Difference]: Finished difference Result 2353 states and 3470 transitions. [2022-07-13 11:40:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:40:05,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-07-13 11:40:05,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:05,346 INFO L225 Difference]: With dead ends: 2353 [2022-07-13 11:40:05,346 INFO L226 Difference]: Without dead ends: 1349 [2022-07-13 11:40:05,348 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 11:40:05,351 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 141 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 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 11:40:05,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 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 11:40:05,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2022-07-13 11:40:05,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1349. [2022-07-13 11:40:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 1.4688427299703264) internal successors, (1980), 1348 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 11:40:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1980 transitions. [2022-07-13 11:40:05,406 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1980 transitions. Word has length 125 [2022-07-13 11:40:05,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:05,406 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 1980 transitions. [2022-07-13 11:40:05,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:05,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1980 transitions. [2022-07-13 11:40:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 11:40:05,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:05,408 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] [2022-07-13 11:40:05,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 11:40:05,408 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:05,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:05,409 INFO L85 PathProgramCache]: Analyzing trace with hash 726227607, now seen corresponding path program 1 times [2022-07-13 11:40:05,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:05,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306857915] [2022-07-13 11:40:05,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:05,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:05,495 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 11:40:05,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:05,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306857915] [2022-07-13 11:40:05,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306857915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:05,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:05,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:40:05,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127780720] [2022-07-13 11:40:05,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:05,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:40:05,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:05,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:40:05,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:40:05,497 INFO L87 Difference]: Start difference. First operand 1349 states and 1980 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 11:40:05,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:05,531 INFO L93 Difference]: Finished difference Result 2005 states and 2944 transitions. [2022-07-13 11:40:05,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:40:05,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-07-13 11:40:05,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:05,536 INFO L225 Difference]: With dead ends: 2005 [2022-07-13 11:40:05,536 INFO L226 Difference]: Without dead ends: 1677 [2022-07-13 11:40:05,536 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 11:40:05,537 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 157 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 373 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 11:40:05,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 373 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:40:05,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2022-07-13 11:40:05,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1675. [2022-07-13 11:40:05,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 1.467741935483871) internal successors, (2457), 1674 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states 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 11:40:05,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2457 transitions. [2022-07-13 11:40:05,572 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2457 transitions. Word has length 128 [2022-07-13 11:40:05,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:05,573 INFO L495 AbstractCegarLoop]: Abstraction has 1675 states and 2457 transitions. [2022-07-13 11:40:05,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 11:40:05,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2457 transitions. [2022-07-13 11:40:05,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-13 11:40:05,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:05,575 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 11:40:05,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 11:40:05,577 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:05,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:05,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1329906676, now seen corresponding path program 1 times [2022-07-13 11:40:05,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:05,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779385032] [2022-07-13 11:40:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:05,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:05,682 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 11:40:05,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:05,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779385032] [2022-07-13 11:40:05,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779385032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:05,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:05,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:40:05,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996003681] [2022-07-13 11:40:05,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:05,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:40:05,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:05,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:40:05,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:40:05,684 INFO L87 Difference]: Start difference. First operand 1675 states and 2457 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 11:40:05,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:05,720 INFO L93 Difference]: Finished difference Result 2005 states and 2940 transitions. [2022-07-13 11:40:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:40:05,720 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 11:40:05,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:05,725 INFO L225 Difference]: With dead ends: 2005 [2022-07-13 11:40:05,725 INFO L226 Difference]: Without dead ends: 2003 [2022-07-13 11:40:05,726 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 11:40:05,726 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 11:40:05,727 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 11:40:05,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2003 states. [2022-07-13 11:40:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2003 to 2001. [2022-07-13 11:40:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 2000 states have (on average 1.4685) internal successors, (2937), 2000 states have internal predecessors, (2937), 0 states have call successors, (0), 0 states 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 11:40:05,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2937 transitions. [2022-07-13 11:40:05,758 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2937 transitions. Word has length 129 [2022-07-13 11:40:05,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:05,758 INFO L495 AbstractCegarLoop]: Abstraction has 2001 states and 2937 transitions. [2022-07-13 11:40:05,758 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 11:40:05,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2937 transitions. [2022-07-13 11:40:05,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 11:40:05,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:05,761 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:05,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 11:40:05,762 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:05,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:05,762 INFO L85 PathProgramCache]: Analyzing trace with hash -657412248, now seen corresponding path program 1 times [2022-07-13 11:40:05,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:05,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068824826] [2022-07-13 11:40:05,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:05,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-13 11:40:05,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:05,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068824826] [2022-07-13 11:40:05,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068824826] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:05,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:05,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:40:05,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834573615] [2022-07-13 11:40:05,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:05,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:40:05,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:05,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:40:05,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:40:05,845 INFO L87 Difference]: Start difference. First operand 2001 states and 2937 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:05,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:05,892 INFO L93 Difference]: Finished difference Result 4299 states and 6325 transitions. [2022-07-13 11:40:05,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:40:05,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2022-07-13 11:40:05,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:05,898 INFO L225 Difference]: With dead ends: 4299 [2022-07-13 11:40:05,898 INFO L226 Difference]: Without dead ends: 2321 [2022-07-13 11:40:05,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:40:05,901 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 140 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:05,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 569 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:40:05,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2321 states. [2022-07-13 11:40:05,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2321 to 2321. [2022-07-13 11:40:05,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 2320 states have (on average 1.4689655172413794) internal successors, (3408), 2320 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states 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 11:40:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3408 transitions. [2022-07-13 11:40:05,965 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3408 transitions. Word has length 167 [2022-07-13 11:40:05,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:05,965 INFO L495 AbstractCegarLoop]: Abstraction has 2321 states and 3408 transitions. [2022-07-13 11:40:05,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:05,965 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3408 transitions. [2022-07-13 11:40:05,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-13 11:40:05,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:05,969 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:05,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 11:40:05,969 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:05,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:05,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2055097211, now seen corresponding path program 1 times [2022-07-13 11:40:05,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:05,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313422441] [2022-07-13 11:40:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:05,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:06,054 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-13 11:40:06,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:06,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313422441] [2022-07-13 11:40:06,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313422441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:06,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:06,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:06,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453588354] [2022-07-13 11:40:06,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:06,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:06,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:06,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:06,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:06,056 INFO L87 Difference]: Start difference. First operand 2321 states and 3408 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 11:40:06,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:06,915 INFO L93 Difference]: Finished difference Result 4773 states and 7002 transitions. [2022-07-13 11:40:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:06,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 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 199 [2022-07-13 11:40:06,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:06,922 INFO L225 Difference]: With dead ends: 4773 [2022-07-13 11:40:06,923 INFO L226 Difference]: Without dead ends: 2475 [2022-07-13 11:40:06,925 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 11:40:06,925 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 40 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:06,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 562 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:40:06,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2022-07-13 11:40:06,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2321. [2022-07-13 11:40:06,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 2320 states have (on average 1.465948275862069) internal successors, (3401), 2320 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states 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 11:40:06,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3401 transitions. [2022-07-13 11:40:06,968 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3401 transitions. Word has length 199 [2022-07-13 11:40:06,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:06,969 INFO L495 AbstractCegarLoop]: Abstraction has 2321 states and 3401 transitions. [2022-07-13 11:40:06,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states 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 11:40:06,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3401 transitions. [2022-07-13 11:40:06,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-13 11:40:06,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:06,973 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-13 11:40:06,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 11:40:06,973 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:06,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:06,973 INFO L85 PathProgramCache]: Analyzing trace with hash -453125189, now seen corresponding path program 1 times [2022-07-13 11:40:06,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:06,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726045602] [2022-07-13 11:40:06,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:06,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-13 11:40:07,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:07,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726045602] [2022-07-13 11:40:07,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726045602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:07,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:07,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:07,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613306965] [2022-07-13 11:40:07,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:07,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:07,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:07,109 INFO L87 Difference]: Start difference. First operand 2321 states and 3401 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:07,936 INFO L93 Difference]: Finished difference Result 5143 states and 7520 transitions. [2022-07-13 11:40:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2022-07-13 11:40:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:07,943 INFO L225 Difference]: With dead ends: 5143 [2022-07-13 11:40:07,944 INFO L226 Difference]: Without dead ends: 2845 [2022-07-13 11:40:07,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:40:07,946 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 57 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:07,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 625 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:40:07,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2845 states. [2022-07-13 11:40:07,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2845 to 2545. [2022-07-13 11:40:07,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2544 states have (on average 1.4689465408805031) internal successors, (3737), 2544 states have internal predecessors, (3737), 0 states have call successors, (0), 0 states 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 11:40:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3737 transitions. [2022-07-13 11:40:07,985 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3737 transitions. Word has length 207 [2022-07-13 11:40:07,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:07,985 INFO L495 AbstractCegarLoop]: Abstraction has 2545 states and 3737 transitions. [2022-07-13 11:40:07,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3737 transitions. [2022-07-13 11:40:07,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-13 11:40:07,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:07,989 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:07,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 11:40:07,990 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:07,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:07,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1368023277, now seen corresponding path program 1 times [2022-07-13 11:40:07,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:07,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236268379] [2022-07-13 11:40:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:07,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 11:40:08,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:08,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236268379] [2022-07-13 11:40:08,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236268379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:08,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:08,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:08,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762438541] [2022-07-13 11:40:08,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:08,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:08,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:08,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:08,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:08,117 INFO L87 Difference]: Start difference. First operand 2545 states and 3737 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 11:40:08,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:08,549 INFO L93 Difference]: Finished difference Result 5596 states and 8211 transitions. [2022-07-13 11:40:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:08,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 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 222 [2022-07-13 11:40:08,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:08,568 INFO L225 Difference]: With dead ends: 5596 [2022-07-13 11:40:08,568 INFO L226 Difference]: Without dead ends: 3074 [2022-07-13 11:40:08,571 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 11:40:08,571 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 124 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:08,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 354 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:40:08,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2022-07-13 11:40:08,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 2545. [2022-07-13 11:40:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2544 states have (on average 1.455188679245283) internal successors, (3702), 2544 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states 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 11:40:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3702 transitions. [2022-07-13 11:40:08,612 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3702 transitions. Word has length 222 [2022-07-13 11:40:08,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:08,612 INFO L495 AbstractCegarLoop]: Abstraction has 2545 states and 3702 transitions. [2022-07-13 11:40:08,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 11:40:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3702 transitions. [2022-07-13 11:40:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-13 11:40:08,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:08,617 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:08,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 11:40:08,617 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:08,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1373277428, now seen corresponding path program 1 times [2022-07-13 11:40:08,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:08,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499559255] [2022-07-13 11:40:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:08,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-07-13 11:40:08,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:08,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499559255] [2022-07-13 11:40:08,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499559255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:08,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:08,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:08,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172319692] [2022-07-13 11:40:08,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:08,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:08,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:08,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:08,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:08,776 INFO L87 Difference]: Start difference. First operand 2545 states and 3702 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 11:40:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:09,378 INFO L93 Difference]: Finished difference Result 5596 states and 8141 transitions. [2022-07-13 11:40:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:09,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 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 224 [2022-07-13 11:40:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:09,383 INFO L225 Difference]: With dead ends: 5596 [2022-07-13 11:40:09,384 INFO L226 Difference]: Without dead ends: 3074 [2022-07-13 11:40:09,386 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 11:40:09,386 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 108 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:09,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 360 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:40:09,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2022-07-13 11:40:09,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 2342. [2022-07-13 11:40:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 2341 states have (on average 1.4617684750106792) internal successors, (3422), 2341 states have internal predecessors, (3422), 0 states have call successors, (0), 0 states 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 11:40:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 3422 transitions. [2022-07-13 11:40:09,422 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 3422 transitions. Word has length 224 [2022-07-13 11:40:09,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:09,422 INFO L495 AbstractCegarLoop]: Abstraction has 2342 states and 3422 transitions. [2022-07-13 11:40:09,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 11:40:09,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 3422 transitions. [2022-07-13 11:40:09,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-13 11:40:09,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:09,427 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:09,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 11:40:09,427 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:09,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:09,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1454909228, now seen corresponding path program 1 times [2022-07-13 11:40:09,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:09,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114693881] [2022-07-13 11:40:09,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:09,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:09,530 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-13 11:40:09,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:09,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114693881] [2022-07-13 11:40:09,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114693881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:09,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:09,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:09,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245622043] [2022-07-13 11:40:09,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:09,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:09,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:09,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:09,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:09,534 INFO L87 Difference]: Start difference. First operand 2342 states and 3422 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 11:40:10,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:10,085 INFO L93 Difference]: Finished difference Result 5130 states and 7478 transitions. [2022-07-13 11:40:10,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:10,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 235 [2022-07-13 11:40:10,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:10,090 INFO L225 Difference]: With dead ends: 5130 [2022-07-13 11:40:10,090 INFO L226 Difference]: Without dead ends: 2811 [2022-07-13 11:40:10,092 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 11:40:10,092 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 56 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:10,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 609 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:40:10,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-07-13 11:40:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2531. [2022-07-13 11:40:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 2530 states have (on average 1.4604743083003953) internal successors, (3695), 2530 states have internal predecessors, (3695), 0 states have call successors, (0), 0 states 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 11:40:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 3695 transitions. [2022-07-13 11:40:10,129 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 3695 transitions. Word has length 235 [2022-07-13 11:40:10,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:10,129 INFO L495 AbstractCegarLoop]: Abstraction has 2531 states and 3695 transitions. [2022-07-13 11:40:10,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 11:40:10,129 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 3695 transitions. [2022-07-13 11:40:10,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-13 11:40:10,133 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:10,133 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:10,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-13 11:40:10,134 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:10,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:10,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1069561667, now seen corresponding path program 1 times [2022-07-13 11:40:10,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:10,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532211551] [2022-07-13 11:40:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:10,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-13 11:40:10,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:10,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532211551] [2022-07-13 11:40:10,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532211551] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:10,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:10,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:10,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999737289] [2022-07-13 11:40:10,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:10,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:10,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:10,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:10,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:10,240 INFO L87 Difference]: Start difference. First operand 2531 states and 3695 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:40:11,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:11,153 INFO L93 Difference]: Finished difference Result 5319 states and 7744 transitions. [2022-07-13 11:40:11,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:11,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 240 [2022-07-13 11:40:11,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:11,169 INFO L225 Difference]: With dead ends: 5319 [2022-07-13 11:40:11,169 INFO L226 Difference]: Without dead ends: 2811 [2022-07-13 11:40:11,171 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 11:40:11,171 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 50 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:11,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 607 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:40:11,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2022-07-13 11:40:11,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2601. [2022-07-13 11:40:11,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2601 states, 2600 states have (on average 1.4642307692307692) internal successors, (3807), 2600 states have internal predecessors, (3807), 0 states have call successors, (0), 0 states 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 11:40:11,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2601 states to 2601 states and 3807 transitions. [2022-07-13 11:40:11,215 INFO L78 Accepts]: Start accepts. Automaton has 2601 states and 3807 transitions. Word has length 240 [2022-07-13 11:40:11,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:11,215 INFO L495 AbstractCegarLoop]: Abstraction has 2601 states and 3807 transitions. [2022-07-13 11:40:11,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:40:11,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2601 states and 3807 transitions. [2022-07-13 11:40:11,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-13 11:40:11,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:11,220 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:11,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-13 11:40:11,221 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:11,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:11,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1956784513, now seen corresponding path program 1 times [2022-07-13 11:40:11,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:11,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857599597] [2022-07-13 11:40:11,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:11,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 284 proven. 96 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-13 11:40:11,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:11,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857599597] [2022-07-13 11:40:11,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857599597] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:11,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221385515] [2022-07-13 11:40:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:11,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:11,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:40:11,343 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 11:40:11,346 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 11:40:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:12,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 11:40:12,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:40:12,122 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:12,123 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:40:12,157 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:40:12,158 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:12,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-13 11:40:12,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:40:12,213 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:12,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-13 11:40:12,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:12,300 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 282 proven. 73 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-13 11:40:12,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:40:12,350 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-13 11:40:12,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221385515] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:12,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:40:12,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 9 [2022-07-13 11:40:12,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591383425] [2022-07-13 11:40:12,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:12,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:12,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:12,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:12,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:40:12,352 INFO L87 Difference]: Start difference. First operand 2601 states and 3807 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:40:13,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:13,266 INFO L93 Difference]: Finished difference Result 5911 states and 8624 transitions. [2022-07-13 11:40:13,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:13,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 240 [2022-07-13 11:40:13,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:13,272 INFO L225 Difference]: With dead ends: 5911 [2022-07-13 11:40:13,272 INFO L226 Difference]: Without dead ends: 3333 [2022-07-13 11:40:13,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 480 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 11:40:13,275 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 110 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:13,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 356 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:40:13,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3333 states. [2022-07-13 11:40:13,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3333 to 2790. [2022-07-13 11:40:13,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2789 states have (on average 1.462889924704195) internal successors, (4080), 2789 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states 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 11:40:13,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 4080 transitions. [2022-07-13 11:40:13,332 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 4080 transitions. Word has length 240 [2022-07-13 11:40:13,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:13,333 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 4080 transitions. [2022-07-13 11:40:13,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:40:13,333 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 4080 transitions. [2022-07-13 11:40:13,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-13 11:40:13,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:13,338 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:13,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 11:40:13,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-07-13 11:40:13,572 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:13,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1346794502, now seen corresponding path program 1 times [2022-07-13 11:40:13,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:13,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944600471] [2022-07-13 11:40:13,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:13,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:13,690 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-13 11:40:13,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:13,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944600471] [2022-07-13 11:40:13,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944600471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:13,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:13,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:13,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266796854] [2022-07-13 11:40:13,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:13,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:13,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:13,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:13,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:13,692 INFO L87 Difference]: Start difference. First operand 2790 states and 4080 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:14,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:14,156 INFO L93 Difference]: Finished difference Result 5823 states and 8493 transitions. [2022-07-13 11:40:14,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:14,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-07-13 11:40:14,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:14,165 INFO L225 Difference]: With dead ends: 5823 [2022-07-13 11:40:14,179 INFO L226 Difference]: Without dead ends: 3056 [2022-07-13 11:40:14,182 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 11:40:14,182 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 47 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:14,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 603 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:40:14,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2022-07-13 11:40:14,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2867. [2022-07-13 11:40:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 2866 states have (on average 1.4651081646894626) internal successors, (4199), 2866 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states 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 11:40:14,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 4199 transitions. [2022-07-13 11:40:14,269 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 4199 transitions. Word has length 241 [2022-07-13 11:40:14,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:14,269 INFO L495 AbstractCegarLoop]: Abstraction has 2867 states and 4199 transitions. [2022-07-13 11:40:14,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:14,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 4199 transitions. [2022-07-13 11:40:14,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-13 11:40:14,287 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:14,287 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:14,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-13 11:40:14,288 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1214068344, now seen corresponding path program 1 times [2022-07-13 11:40:14,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:14,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108681321] [2022-07-13 11:40:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:14,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 287 proven. 99 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-13 11:40:14,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:14,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108681321] [2022-07-13 11:40:14,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108681321] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:14,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24998461] [2022-07-13 11:40:14,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:14,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:14,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:40:14,415 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:40:14,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 11:40:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:15,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 11:40:15,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:40:15,197 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:15,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:40:15,240 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:40:15,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:15,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-13 11:40:15,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:40:15,282 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:15,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-13 11:40:15,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 286 proven. 71 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-13 11:40:15,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:40:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-13 11:40:15,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24998461] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:15,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:40:15,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 9 [2022-07-13 11:40:15,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777709851] [2022-07-13 11:40:15,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:15,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:15,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:40:15,393 INFO L87 Difference]: Start difference. First operand 2867 states and 4199 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:16,615 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:16,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:16,939 INFO L93 Difference]: Finished difference Result 6163 states and 8981 transitions. [2022-07-13 11:40:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:16,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2022-07-13 11:40:16,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:16,948 INFO L225 Difference]: With dead ends: 6163 [2022-07-13 11:40:16,949 INFO L226 Difference]: Without dead ends: 3319 [2022-07-13 11:40:16,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 490 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 11:40:16,952 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 109 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:16,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 356 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 11:40:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3319 states. [2022-07-13 11:40:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3319 to 2790. [2022-07-13 11:40:16,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2790 states, 2789 states have (on average 1.4578702043743277) internal successors, (4066), 2789 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states 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 11:40:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 4066 transitions. [2022-07-13 11:40:17,000 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 4066 transitions. Word has length 241 [2022-07-13 11:40:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:17,000 INFO L495 AbstractCegarLoop]: Abstraction has 2790 states and 4066 transitions. [2022-07-13 11:40:17,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 4066 transitions. [2022-07-13 11:40:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-13 11:40:17,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:17,005 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-13 11:40:17,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 11:40:17,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-07-13 11:40:17,237 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:17,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:17,237 INFO L85 PathProgramCache]: Analyzing trace with hash -588978041, now seen corresponding path program 1 times [2022-07-13 11:40:17,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:17,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852922405] [2022-07-13 11:40:17,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:17,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-13 11:40:17,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:17,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852922405] [2022-07-13 11:40:17,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852922405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:17,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:17,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:17,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155398325] [2022-07-13 11:40:17,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:17,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:17,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:17,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:17,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:17,438 INFO L87 Difference]: Start difference. First operand 2790 states and 4066 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 11:40:18,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:18,121 INFO L93 Difference]: Finished difference Result 5823 states and 8458 transitions. [2022-07-13 11:40:18,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:18,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 249 [2022-07-13 11:40:18,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:18,127 INFO L225 Difference]: With dead ends: 5823 [2022-07-13 11:40:18,128 INFO L226 Difference]: Without dead ends: 3056 [2022-07-13 11:40:18,130 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 11:40:18,130 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 41 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:18,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 601 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:40:18,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2022-07-13 11:40:18,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2902. [2022-07-13 11:40:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2902 states, 2901 states have (on average 1.4594967252671494) internal successors, (4234), 2901 states have internal predecessors, (4234), 0 states have call successors, (0), 0 states 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 11:40:18,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2902 states to 2902 states and 4234 transitions. [2022-07-13 11:40:18,181 INFO L78 Accepts]: Start accepts. Automaton has 2902 states and 4234 transitions. Word has length 249 [2022-07-13 11:40:18,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:18,181 INFO L495 AbstractCegarLoop]: Abstraction has 2902 states and 4234 transitions. [2022-07-13 11:40:18,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 11:40:18,182 INFO L276 IsEmpty]: Start isEmpty. Operand 2902 states and 4234 transitions. [2022-07-13 11:40:18,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-13 11:40:18,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:18,185 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-13 11:40:18,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-13 11:40:18,185 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:18,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:18,186 INFO L85 PathProgramCache]: Analyzing trace with hash 735878153, now seen corresponding path program 1 times [2022-07-13 11:40:18,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:18,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103340303] [2022-07-13 11:40:18,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:18,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 305 proven. 3 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-13 11:40:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:18,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103340303] [2022-07-13 11:40:18,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103340303] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:18,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993688738] [2022-07-13 11:40:18,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:18,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:18,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:40:18,302 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:40:18,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 11:40:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:19,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 11:40:19,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:40:19,075 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:19,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:40:19,105 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:40:19,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:19,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:40:19,168 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:19,169 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-13 11:40:19,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 302 proven. 64 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-13 11:40:19,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:40:19,298 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-13 11:40:19,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993688738] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:19,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:40:19,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 12 [2022-07-13 11:40:19,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60510899] [2022-07-13 11:40:19,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:19,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:19,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:19,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-13 11:40:19,300 INFO L87 Difference]: Start difference. First operand 2902 states and 4234 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 11:40:20,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:20,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:20,730 INFO L93 Difference]: Finished difference Result 6473 states and 9405 transitions. [2022-07-13 11:40:20,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:20,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 249 [2022-07-13 11:40:20,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:20,736 INFO L225 Difference]: With dead ends: 6473 [2022-07-13 11:40:20,737 INFO L226 Difference]: Without dead ends: 3594 [2022-07-13 11:40:20,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 495 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-13 11:40:20,740 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 102 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:20,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 359 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 11:40:20,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2022-07-13 11:40:20,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 3051. [2022-07-13 11:40:20,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 3050 states have (on average 1.460655737704918) internal successors, (4455), 3050 states have internal predecessors, (4455), 0 states have call successors, (0), 0 states 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 11:40:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 4455 transitions. [2022-07-13 11:40:20,791 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 4455 transitions. Word has length 249 [2022-07-13 11:40:20,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:20,792 INFO L495 AbstractCegarLoop]: Abstraction has 3051 states and 4455 transitions. [2022-07-13 11:40:20,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 11:40:20,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 4455 transitions. [2022-07-13 11:40:20,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-13 11:40:20,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:20,797 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:20,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 11:40:21,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:21,018 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:21,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:21,018 INFO L85 PathProgramCache]: Analyzing trace with hash 716366148, now seen corresponding path program 1 times [2022-07-13 11:40:21,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:21,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149917038] [2022-07-13 11:40:21,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:21,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-13 11:40:21,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:21,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149917038] [2022-07-13 11:40:21,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149917038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:21,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:21,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:21,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071759433] [2022-07-13 11:40:21,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:21,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:21,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:21,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:21,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:21,163 INFO L87 Difference]: Start difference. First operand 3051 states and 4455 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:21,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:21,778 INFO L93 Difference]: Finished difference Result 6325 states and 9208 transitions. [2022-07-13 11:40:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:21,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2022-07-13 11:40:21,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:21,782 INFO L225 Difference]: With dead ends: 6325 [2022-07-13 11:40:21,782 INFO L226 Difference]: Without dead ends: 3283 [2022-07-13 11:40:21,784 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 11:40:21,784 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 37 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:21,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 594 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:40:21,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2022-07-13 11:40:21,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 3156. [2022-07-13 11:40:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3156 states, 3155 states have (on average 1.4608557844690966) internal successors, (4609), 3155 states have internal predecessors, (4609), 0 states have call successors, (0), 0 states 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 11:40:21,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3156 states to 3156 states and 4609 transitions. [2022-07-13 11:40:21,835 INFO L78 Accepts]: Start accepts. Automaton has 3156 states and 4609 transitions. Word has length 250 [2022-07-13 11:40:21,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:21,835 INFO L495 AbstractCegarLoop]: Abstraction has 3156 states and 4609 transitions. [2022-07-13 11:40:21,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:21,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3156 states and 4609 transitions. [2022-07-13 11:40:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-13 11:40:21,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:21,839 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:21,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-13 11:40:21,839 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:21,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:21,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1162764798, now seen corresponding path program 1 times [2022-07-13 11:40:21,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:21,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467196778] [2022-07-13 11:40:21,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:21,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:21,943 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2022-07-13 11:40:21,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:21,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467196778] [2022-07-13 11:40:21,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467196778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:21,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:21,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:21,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724696825] [2022-07-13 11:40:21,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:21,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:21,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:21,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:21,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:21,945 INFO L87 Difference]: Start difference. First operand 3156 states and 4609 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:23,870 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:24,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:24,100 INFO L93 Difference]: Finished difference Result 6465 states and 9418 transitions. [2022-07-13 11:40:24,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:24,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 250 [2022-07-13 11:40:24,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:24,108 INFO L225 Difference]: With dead ends: 6465 [2022-07-13 11:40:24,108 INFO L226 Difference]: Without dead ends: 3332 [2022-07-13 11:40:24,111 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 11:40:24,112 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 32 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:24,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 511 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 11:40:24,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2022-07-13 11:40:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 3219. [2022-07-13 11:40:24,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 3218 states have (on average 1.4605344934742075) internal successors, (4700), 3218 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states 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 11:40:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 4700 transitions. [2022-07-13 11:40:24,168 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 4700 transitions. Word has length 250 [2022-07-13 11:40:24,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:24,168 INFO L495 AbstractCegarLoop]: Abstraction has 3219 states and 4700 transitions. [2022-07-13 11:40:24,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:24,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 4700 transitions. [2022-07-13 11:40:24,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-07-13 11:40:24,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:24,173 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:24,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-13 11:40:24,173 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:24,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:24,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1130533427, now seen corresponding path program 1 times [2022-07-13 11:40:24,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:24,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049267072] [2022-07-13 11:40:24,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:24,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:24,325 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 440 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-07-13 11:40:24,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:24,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049267072] [2022-07-13 11:40:24,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049267072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:24,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:24,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:24,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69825443] [2022-07-13 11:40:24,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:24,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:24,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:24,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:24,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:24,327 INFO L87 Difference]: Start difference. First operand 3219 states and 4700 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:40:25,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:25,328 INFO L93 Difference]: Finished difference Result 7378 states and 10751 transitions. [2022-07-13 11:40:25,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:25,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 252 [2022-07-13 11:40:25,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:25,334 INFO L225 Difference]: With dead ends: 7378 [2022-07-13 11:40:25,335 INFO L226 Difference]: Without dead ends: 4182 [2022-07-13 11:40:25,337 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 11:40:25,338 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 113 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:25,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 388 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 11:40:25,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4182 states. [2022-07-13 11:40:25,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4182 to 3635. [2022-07-13 11:40:25,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3634 states have (on average 1.454045129334067) internal successors, (5284), 3634 states have internal predecessors, (5284), 0 states have call successors, (0), 0 states 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 11:40:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5284 transitions. [2022-07-13 11:40:25,400 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5284 transitions. Word has length 252 [2022-07-13 11:40:25,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:25,401 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5284 transitions. [2022-07-13 11:40:25,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:40:25,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5284 transitions. [2022-07-13 11:40:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-13 11:40:25,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:25,406 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:25,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-13 11:40:25,406 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:25,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1273550838, now seen corresponding path program 1 times [2022-07-13 11:40:25,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:25,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343243010] [2022-07-13 11:40:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:25,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 301 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-13 11:40:25,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:25,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343243010] [2022-07-13 11:40:25,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343243010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:25,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:25,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:25,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026222048] [2022-07-13 11:40:25,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:25,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:25,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:25,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:25,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:25,531 INFO L87 Difference]: Start difference. First operand 3635 states and 5284 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:40:26,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:26,008 INFO L93 Difference]: Finished difference Result 7374 states and 10691 transitions. [2022-07-13 11:40:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:26,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 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 258 [2022-07-13 11:40:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:26,016 INFO L225 Difference]: With dead ends: 7374 [2022-07-13 11:40:26,016 INFO L226 Difference]: Without dead ends: 3762 [2022-07-13 11:40:26,018 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 11:40:26,019 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 51 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:26,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 591 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:40:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3762 states. [2022-07-13 11:40:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3762 to 3635. [2022-07-13 11:40:26,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3634 states have (on average 1.4521188772702256) internal successors, (5277), 3634 states have internal predecessors, (5277), 0 states have call successors, (0), 0 states 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 11:40:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5277 transitions. [2022-07-13 11:40:26,071 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5277 transitions. Word has length 258 [2022-07-13 11:40:26,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:26,071 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5277 transitions. [2022-07-13 11:40:26,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 11:40:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5277 transitions. [2022-07-13 11:40:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-13 11:40:26,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:26,076 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:26,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-13 11:40:26,076 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:26,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:26,076 INFO L85 PathProgramCache]: Analyzing trace with hash -417777094, now seen corresponding path program 1 times [2022-07-13 11:40:26,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:26,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963004790] [2022-07-13 11:40:26,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:26,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 305 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-13 11:40:26,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:26,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963004790] [2022-07-13 11:40:26,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963004790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:26,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:26,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:26,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572535229] [2022-07-13 11:40:26,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:26,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:26,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:26,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:26,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:26,192 INFO L87 Difference]: Start difference. First operand 3635 states and 5277 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:27,900 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:28,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:28,156 INFO L93 Difference]: Finished difference Result 7360 states and 10656 transitions. [2022-07-13 11:40:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:28,157 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 259 [2022-07-13 11:40:28,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:28,160 INFO L225 Difference]: With dead ends: 7360 [2022-07-13 11:40:28,161 INFO L226 Difference]: Without dead ends: 3748 [2022-07-13 11:40:28,163 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 11:40:28,163 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 48 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:28,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 589 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 11:40:28,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-07-13 11:40:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3635. [2022-07-13 11:40:28,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3634 states have (on average 1.4501926252063841) internal successors, (5270), 3634 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states 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 11:40:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5270 transitions. [2022-07-13 11:40:28,254 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5270 transitions. Word has length 259 [2022-07-13 11:40:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:28,255 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5270 transitions. [2022-07-13 11:40:28,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:28,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5270 transitions. [2022-07-13 11:40:28,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-13 11:40:28,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:28,259 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:28,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-13 11:40:28,259 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:28,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:28,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1996363610, now seen corresponding path program 1 times [2022-07-13 11:40:28,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:28,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579816669] [2022-07-13 11:40:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:28,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:28,361 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 11:40:28,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:28,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579816669] [2022-07-13 11:40:28,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579816669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:28,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:28,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:28,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918701218] [2022-07-13 11:40:28,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:28,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:28,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:28,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:28,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:28,363 INFO L87 Difference]: Start difference. First operand 3635 states and 5270 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 11:40:29,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:29,237 INFO L93 Difference]: Finished difference Result 7360 states and 10642 transitions. [2022-07-13 11:40:29,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:29,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 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 262 [2022-07-13 11:40:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:29,242 INFO L225 Difference]: With dead ends: 7360 [2022-07-13 11:40:29,242 INFO L226 Difference]: Without dead ends: 3748 [2022-07-13 11:40:29,244 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 11:40:29,245 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 44 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:29,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 587 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:40:29,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3748 states. [2022-07-13 11:40:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3748 to 3635. [2022-07-13 11:40:29,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 3634 states have (on average 1.4482663731425427) internal successors, (5263), 3634 states have internal predecessors, (5263), 0 states have call successors, (0), 0 states 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 11:40:29,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5263 transitions. [2022-07-13 11:40:29,300 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5263 transitions. Word has length 262 [2022-07-13 11:40:29,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:29,301 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5263 transitions. [2022-07-13 11:40:29,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 11:40:29,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5263 transitions. [2022-07-13 11:40:29,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-07-13 11:40:29,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:29,308 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:29,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-13 11:40:29,309 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:29,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:29,309 INFO L85 PathProgramCache]: Analyzing trace with hash 939632408, now seen corresponding path program 1 times [2022-07-13 11:40:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:29,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643123301] [2022-07-13 11:40:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:29,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 397 proven. 75 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-13 11:40:29,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:29,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643123301] [2022-07-13 11:40:29,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643123301] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:29,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548362496] [2022-07-13 11:40:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:29,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:29,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:40:29,462 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:40:29,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 11:40:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:30,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1404 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 11:40:30,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:40:30,410 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:30,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:40:30,449 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:40:30,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:30,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-13 11:40:30,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:40:30,503 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:30,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-13 11:40:30,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 388 proven. 87 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-07-13 11:40:30,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:40:30,571 INFO L134 CoverageAnalysis]: Checked inductivity of 620 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 11:40:30,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548362496] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:30,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:40:30,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 9 [2022-07-13 11:40:30,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839532275] [2022-07-13 11:40:30,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:30,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:30,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:30,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:30,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:40:30,573 INFO L87 Difference]: Start difference. First operand 3635 states and 5263 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 11:40:31,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:31,122 INFO L93 Difference]: Finished difference Result 7997 states and 11544 transitions. [2022-07-13 11:40:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:31,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 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 262 [2022-07-13 11:40:31,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:31,126 INFO L225 Difference]: With dead ends: 7997 [2022-07-13 11:40:31,127 INFO L226 Difference]: Without dead ends: 4385 [2022-07-13 11:40:31,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 11:40:31,130 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 116 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:31,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 376 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:40:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4385 states. [2022-07-13 11:40:31,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4385 to 3845. [2022-07-13 11:40:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3844 states have (on average 1.4352237252861602) internal successors, (5517), 3844 states have internal predecessors, (5517), 0 states have call successors, (0), 0 states 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 11:40:31,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5517 transitions. [2022-07-13 11:40:31,193 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5517 transitions. Word has length 262 [2022-07-13 11:40:31,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:31,193 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 5517 transitions. [2022-07-13 11:40:31,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 11:40:31,193 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5517 transitions. [2022-07-13 11:40:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-13 11:40:31,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:31,197 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:31,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 11:40:31,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-07-13 11:40:31,411 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:31,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:31,412 INFO L85 PathProgramCache]: Analyzing trace with hash 30687352, now seen corresponding path program 1 times [2022-07-13 11:40:31,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:31,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704229343] [2022-07-13 11:40:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:31,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:31,551 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 11:40:31,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:31,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704229343] [2022-07-13 11:40:31,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704229343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:31,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:31,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:31,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984005732] [2022-07-13 11:40:31,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:31,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:31,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:31,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:31,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:31,553 INFO L87 Difference]: Start difference. First operand 3845 states and 5517 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 11:40:32,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:32,180 INFO L93 Difference]: Finished difference Result 7766 states and 11122 transitions. [2022-07-13 11:40:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:32,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 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 263 [2022-07-13 11:40:32,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:32,185 INFO L225 Difference]: With dead ends: 7766 [2022-07-13 11:40:32,185 INFO L226 Difference]: Without dead ends: 3944 [2022-07-13 11:40:32,188 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 11:40:32,188 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 41 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:32,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 583 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:40:32,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2022-07-13 11:40:32,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3845. [2022-07-13 11:40:32,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3844 states have (on average 1.4334027055150884) internal successors, (5510), 3844 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states 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 11:40:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5510 transitions. [2022-07-13 11:40:32,255 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5510 transitions. Word has length 263 [2022-07-13 11:40:32,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:32,256 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 5510 transitions. [2022-07-13 11:40:32,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 11:40:32,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5510 transitions. [2022-07-13 11:40:32,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2022-07-13 11:40:32,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:32,260 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:32,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-13 11:40:32,260 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:32,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:32,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1631758458, now seen corresponding path program 1 times [2022-07-13 11:40:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:32,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415913885] [2022-07-13 11:40:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:32,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 401 proven. 78 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-13 11:40:32,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:32,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415913885] [2022-07-13 11:40:32,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415913885] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:32,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324608295] [2022-07-13 11:40:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:32,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:32,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:40:32,382 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:40:32,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 11:40:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:33,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 11:40:33,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:40:33,446 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:33,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:40:33,488 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:40:33,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:33,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-13 11:40:33,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:40:33,531 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:33,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-13 11:40:33,561 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:33,564 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 393 proven. 85 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-13 11:40:33,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:40:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-07-13 11:40:33,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324608295] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:33,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:40:33,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 9 [2022-07-13 11:40:33,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546892151] [2022-07-13 11:40:33,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:33,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:33,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:33,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:33,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:40:33,599 INFO L87 Difference]: Start difference. First operand 3845 states and 5510 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 11:40:34,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:34,615 INFO L93 Difference]: Finished difference Result 8116 states and 11597 transitions. [2022-07-13 11:40:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:34,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 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 263 [2022-07-13 11:40:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:34,620 INFO L225 Difference]: With dead ends: 8116 [2022-07-13 11:40:34,620 INFO L226 Difference]: Without dead ends: 4294 [2022-07-13 11:40:34,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 11:40:34,623 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 115 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:34,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 356 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 11:40:34,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4294 states. [2022-07-13 11:40:34,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4294 to 3845. [2022-07-13 11:40:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3844 states have (on average 1.4211758584807492) internal successors, (5463), 3844 states have internal predecessors, (5463), 0 states have call successors, (0), 0 states 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 11:40:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5463 transitions. [2022-07-13 11:40:34,689 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5463 transitions. Word has length 263 [2022-07-13 11:40:34,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:34,690 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 5463 transitions. [2022-07-13 11:40:34,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 11:40:34,690 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5463 transitions. [2022-07-13 11:40:34,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-13 11:40:34,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:34,694 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:34,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 11:40:34,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:34,908 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:34,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:34,908 INFO L85 PathProgramCache]: Analyzing trace with hash 241138473, now seen corresponding path program 1 times [2022-07-13 11:40:34,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:34,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336109324] [2022-07-13 11:40:34,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:34,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-13 11:40:35,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:35,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336109324] [2022-07-13 11:40:35,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336109324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:35,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:35,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:35,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683804573] [2022-07-13 11:40:35,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:35,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:35,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:35,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:35,017 INFO L87 Difference]: Start difference. First operand 3845 states and 5463 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:35,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:35,557 INFO L93 Difference]: Finished difference Result 7766 states and 11014 transitions. [2022-07-13 11:40:35,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:35,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2022-07-13 11:40:35,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:35,562 INFO L225 Difference]: With dead ends: 7766 [2022-07-13 11:40:35,562 INFO L226 Difference]: Without dead ends: 3944 [2022-07-13 11:40:35,564 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 11:40:35,565 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 36 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:35,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 581 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:40:35,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2022-07-13 11:40:35,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3845. [2022-07-13 11:40:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3845 states, 3844 states have (on average 1.4193548387096775) internal successors, (5456), 3844 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states 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 11:40:35,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3845 states to 3845 states and 5456 transitions. [2022-07-13 11:40:35,641 INFO L78 Accepts]: Start accepts. Automaton has 3845 states and 5456 transitions. Word has length 272 [2022-07-13 11:40:35,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:35,642 INFO L495 AbstractCegarLoop]: Abstraction has 3845 states and 5456 transitions. [2022-07-13 11:40:35,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:35,642 INFO L276 IsEmpty]: Start isEmpty. Operand 3845 states and 5456 transitions. [2022-07-13 11:40:35,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-13 11:40:35,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:35,653 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:35,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-13 11:40:35,653 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:35,654 INFO L85 PathProgramCache]: Analyzing trace with hash -382143129, now seen corresponding path program 1 times [2022-07-13 11:40:35,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:35,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466064798] [2022-07-13 11:40:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:35,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:35,779 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 433 proven. 13 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-07-13 11:40:35,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:35,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466064798] [2022-07-13 11:40:35,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466064798] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:35,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763673385] [2022-07-13 11:40:35,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:35,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:35,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:40:35,781 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:40:35,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 11:40:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:36,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 1434 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 11:40:36,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:40:36,812 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:36,813 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:40:36,840 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:40:36,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:36,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-13 11:40:36,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:40:36,872 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:36,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-13 11:40:36,910 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 428 proven. 77 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2022-07-13 11:40:36,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:40:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 434 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-13 11:40:36,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763673385] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:36,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:40:36,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 9 [2022-07-13 11:40:36,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104282537] [2022-07-13 11:40:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:36,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:36,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:36,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:36,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:40:36,963 INFO L87 Difference]: Start difference. First operand 3845 states and 5456 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:37,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:38,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:38,358 INFO L93 Difference]: Finished difference Result 8417 states and 11916 transitions. [2022-07-13 11:40:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:38,358 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2022-07-13 11:40:38,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:38,363 INFO L225 Difference]: With dead ends: 8417 [2022-07-13 11:40:38,363 INFO L226 Difference]: Without dead ends: 4595 [2022-07-13 11:40:38,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 544 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 11:40:38,373 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 110 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:38,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 356 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 11:40:38,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4595 states. [2022-07-13 11:40:38,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4595 to 4090. [2022-07-13 11:40:38,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 4089 states have (on average 1.4115920763022745) internal successors, (5772), 4089 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states 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 11:40:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 5772 transitions. [2022-07-13 11:40:38,514 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 5772 transitions. Word has length 272 [2022-07-13 11:40:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:38,515 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 5772 transitions. [2022-07-13 11:40:38,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 5772 transitions. [2022-07-13 11:40:38,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-13 11:40:38,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:38,519 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:38,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 11:40:38,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:38,739 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:38,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:38,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1965454516, now seen corresponding path program 1 times [2022-07-13 11:40:38,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:38,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950350708] [2022-07-13 11:40:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:38,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:38,855 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-13 11:40:38,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:38,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950350708] [2022-07-13 11:40:38,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950350708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:38,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:38,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:38,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181104727] [2022-07-13 11:40:38,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:38,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:38,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:38,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:38,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:38,857 INFO L87 Difference]: Start difference. First operand 4090 states and 5772 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 11:40:40,871 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 11:40:41,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:41,128 INFO L93 Difference]: Finished difference Result 8242 states and 11618 transitions. [2022-07-13 11:40:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:41,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 273 [2022-07-13 11:40:41,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:41,133 INFO L225 Difference]: With dead ends: 8242 [2022-07-13 11:40:41,133 INFO L226 Difference]: Without dead ends: 4175 [2022-07-13 11:40:41,136 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 11:40:41,136 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 33 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:41,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 577 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:40:41,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4175 states. [2022-07-13 11:40:41,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4175 to 4090. [2022-07-13 11:40:41,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 4089 states have (on average 1.4098801662998288) internal successors, (5765), 4089 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states 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 11:40:41,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 5765 transitions. [2022-07-13 11:40:41,208 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 5765 transitions. Word has length 273 [2022-07-13 11:40:41,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:41,208 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 5765 transitions. [2022-07-13 11:40:41,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 11:40:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 5765 transitions. [2022-07-13 11:40:41,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-13 11:40:41,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:41,212 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:41,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-13 11:40:41,212 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:41,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:41,213 INFO L85 PathProgramCache]: Analyzing trace with hash 187652302, now seen corresponding path program 1 times [2022-07-13 11:40:41,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:41,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708028324] [2022-07-13 11:40:41,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:41,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 438 proven. 11 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-07-13 11:40:41,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:41,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708028324] [2022-07-13 11:40:41,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708028324] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:41,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007979468] [2022-07-13 11:40:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:41,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:41,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:40:41,346 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:40:41,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 11:40:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:42,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-13 11:40:42,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:40:42,378 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:42,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:40:42,420 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:40:42,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:42,429 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-13 11:40:42,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:40:42,448 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:42,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-13 11:40:42,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 433 proven. 75 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-07-13 11:40:42,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:40:42,538 INFO L134 CoverageAnalysis]: Checked inductivity of 670 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-13 11:40:42,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007979468] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:42,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:40:42,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 8] total 9 [2022-07-13 11:40:42,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193855582] [2022-07-13 11:40:42,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:42,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:42,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:42,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:42,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:40:42,540 INFO L87 Difference]: Start difference. First operand 4090 states and 5765 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 11:40:43,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:43,315 INFO L93 Difference]: Finished difference Result 8606 states and 12107 transitions. [2022-07-13 11:40:43,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:43,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 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 273 [2022-07-13 11:40:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:43,320 INFO L225 Difference]: With dead ends: 8606 [2022-07-13 11:40:43,320 INFO L226 Difference]: Without dead ends: 4539 [2022-07-13 11:40:43,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 11:40:43,323 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 109 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:43,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 356 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:40:43,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4539 states. [2022-07-13 11:40:43,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4539 to 4090. [2022-07-13 11:40:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4090 states, 4089 states have (on average 1.401565174859379) internal successors, (5731), 4089 states have internal predecessors, (5731), 0 states have call successors, (0), 0 states 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 11:40:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4090 states to 4090 states and 5731 transitions. [2022-07-13 11:40:43,401 INFO L78 Accepts]: Start accepts. Automaton has 4090 states and 5731 transitions. Word has length 273 [2022-07-13 11:40:43,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:43,402 INFO L495 AbstractCegarLoop]: Abstraction has 4090 states and 5731 transitions. [2022-07-13 11:40:43,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 11:40:43,402 INFO L276 IsEmpty]: Start isEmpty. Operand 4090 states and 5731 transitions. [2022-07-13 11:40:43,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-07-13 11:40:43,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:43,406 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:43,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 11:40:43,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:43,627 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:43,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:43,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1120925968, now seen corresponding path program 1 times [2022-07-13 11:40:43,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:43,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928997611] [2022-07-13 11:40:43,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:43,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2022-07-13 11:40:43,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:43,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928997611] [2022-07-13 11:40:43,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928997611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:43,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:43,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:43,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208527336] [2022-07-13 11:40:43,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:43,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:43,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:43,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:43,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:43,776 INFO L87 Difference]: Start difference. First operand 4090 states and 5731 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 11:40:44,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:44,325 INFO L93 Difference]: Finished difference Result 8326 states and 11661 transitions. [2022-07-13 11:40:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:44,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 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 281 [2022-07-13 11:40:44,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:44,331 INFO L225 Difference]: With dead ends: 8326 [2022-07-13 11:40:44,331 INFO L226 Difference]: Without dead ends: 4259 [2022-07-13 11:40:44,334 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 11:40:44,334 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 14 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:44,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 553 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:40:44,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4259 states. [2022-07-13 11:40:44,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4259 to 4237. [2022-07-13 11:40:44,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4237 states, 4236 states have (on average 1.3991973559962227) internal successors, (5927), 4236 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states 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 11:40:44,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 5927 transitions. [2022-07-13 11:40:44,411 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 5927 transitions. Word has length 281 [2022-07-13 11:40:44,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:44,411 INFO L495 AbstractCegarLoop]: Abstraction has 4237 states and 5927 transitions. [2022-07-13 11:40:44,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 11:40:44,411 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 5927 transitions. [2022-07-13 11:40:44,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-13 11:40:44,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:44,415 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:44,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-07-13 11:40:44,415 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:44,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:44,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1719417322, now seen corresponding path program 1 times [2022-07-13 11:40:44,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:44,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423354745] [2022-07-13 11:40:44,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:44,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 674 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2022-07-13 11:40:44,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:44,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423354745] [2022-07-13 11:40:44,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423354745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:44,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:44,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:44,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696940917] [2022-07-13 11:40:44,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:44,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:44,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:44,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:44,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:44,523 INFO L87 Difference]: Start difference. First operand 4237 states and 5927 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 11:40:45,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:45,176 INFO L93 Difference]: Finished difference Result 8557 states and 11956 transitions. [2022-07-13 11:40:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:45,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 282 [2022-07-13 11:40:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:45,182 INFO L225 Difference]: With dead ends: 8557 [2022-07-13 11:40:45,182 INFO L226 Difference]: Without dead ends: 4343 [2022-07-13 11:40:45,184 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 11:40:45,192 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 30 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:45,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 576 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:40:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4343 states. [2022-07-13 11:40:45,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4343 to 4237. [2022-07-13 11:40:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4237 states, 4236 states have (on average 1.3975448536355053) internal successors, (5920), 4236 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states 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 11:40:45,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 5920 transitions. [2022-07-13 11:40:45,310 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 5920 transitions. Word has length 282 [2022-07-13 11:40:45,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:45,310 INFO L495 AbstractCegarLoop]: Abstraction has 4237 states and 5920 transitions. [2022-07-13 11:40:45,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 11:40:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 5920 transitions. [2022-07-13 11:40:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-07-13 11:40:45,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:45,314 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:45,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-07-13 11:40:45,314 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:45,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:45,315 INFO L85 PathProgramCache]: Analyzing trace with hash 945282186, now seen corresponding path program 1 times [2022-07-13 11:40:45,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:45,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767756222] [2022-07-13 11:40:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:45,436 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 474 proven. 106 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-13 11:40:45,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:45,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767756222] [2022-07-13 11:40:45,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767756222] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:45,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929828675] [2022-07-13 11:40:45,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:45,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:40:45,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:40:45,438 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:40:45,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 11:40:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:46,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 1502 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-13 11:40:46,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:40:46,527 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:46,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:40:46,554 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:40:46,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:46,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:40:46,573 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:40:46,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-13 11:40:46,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:40:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 477 proven. 64 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-13 11:40:46,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:40:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 482 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-07-13 11:40:46,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929828675] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:40:46,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:40:46,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2022-07-13 11:40:46,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492791733] [2022-07-13 11:40:46,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:46,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:46,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:46,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:46,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 11:40:46,677 INFO L87 Difference]: Start difference. First operand 4237 states and 5920 transitions. Second operand has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 11:40:47,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:47,908 INFO L93 Difference]: Finished difference Result 8900 states and 12417 transitions. [2022-07-13 11:40:47,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:47,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 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 290 [2022-07-13 11:40:47,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:47,913 INFO L225 Difference]: With dead ends: 8900 [2022-07-13 11:40:47,913 INFO L226 Difference]: Without dead ends: 4686 [2022-07-13 11:40:47,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 11:40:47,916 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 103 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:47,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 415 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 11:40:47,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4686 states. [2022-07-13 11:40:48,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4686 to 4243. [2022-07-13 11:40:48,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4243 states, 4242 states have (on average 1.3936822253653938) internal successors, (5912), 4242 states have internal predecessors, (5912), 0 states have call successors, (0), 0 states 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 11:40:48,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 5912 transitions. [2022-07-13 11:40:48,031 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 5912 transitions. Word has length 290 [2022-07-13 11:40:48,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:48,031 INFO L495 AbstractCegarLoop]: Abstraction has 4243 states and 5912 transitions. [2022-07-13 11:40:48,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.75) internal successors, (163), 4 states have internal predecessors, (163), 0 states have call successors, (0), 0 states 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 11:40:48,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 5912 transitions. [2022-07-13 11:40:48,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-07-13 11:40:48,036 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:48,036 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:48,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-13 11:40:48,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-07-13 11:40:48,251 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:48,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1892320072, now seen corresponding path program 1 times [2022-07-13 11:40:48,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:48,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120928989] [2022-07-13 11:40:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:48,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:48,555 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-07-13 11:40:48,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:48,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120928989] [2022-07-13 11:40:48,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120928989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:48,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:48,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 11:40:48,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295759064] [2022-07-13 11:40:48,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:48,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 11:40:48,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:48,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 11:40:48,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:40:48,557 INFO L87 Difference]: Start difference. First operand 4243 states and 5912 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 11:40:49,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:52,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:52,324 INFO L93 Difference]: Finished difference Result 12188 states and 17005 transitions. [2022-07-13 11:40:52,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 11:40:52,324 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 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 290 [2022-07-13 11:40:52,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:52,333 INFO L225 Difference]: With dead ends: 12188 [2022-07-13 11:40:52,333 INFO L226 Difference]: Without dead ends: 7968 [2022-07-13 11:40:52,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-07-13 11:40:52,338 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 185 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:52,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1165 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 11:40:52,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2022-07-13 11:40:52,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7692. [2022-07-13 11:40:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7692 states, 7691 states have (on average 1.402808477441165) internal successors, (10789), 7691 states have internal predecessors, (10789), 0 states have call successors, (0), 0 states 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 11:40:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 10789 transitions. [2022-07-13 11:40:52,608 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 10789 transitions. Word has length 290 [2022-07-13 11:40:52,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:52,608 INFO L495 AbstractCegarLoop]: Abstraction has 7692 states and 10789 transitions. [2022-07-13 11:40:52,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 11:40:52,609 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 10789 transitions. [2022-07-13 11:40:52,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-07-13 11:40:52,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:52,632 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:52,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-07-13 11:40:52,632 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:52,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:52,633 INFO L85 PathProgramCache]: Analyzing trace with hash -631099868, now seen corresponding path program 1 times [2022-07-13 11:40:52,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:52,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505236543] [2022-07-13 11:40:52,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:52,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2022-07-13 11:40:52,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:52,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505236543] [2022-07-13 11:40:52,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505236543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:52,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:52,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:52,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306735472] [2022-07-13 11:40:52,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:52,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:52,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:52,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:52,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:52,872 INFO L87 Difference]: Start difference. First operand 7692 states and 10789 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:53,418 INFO L93 Difference]: Finished difference Result 15573 states and 21809 transitions. [2022-07-13 11:40:53,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:53,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2022-07-13 11:40:53,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:53,427 INFO L225 Difference]: With dead ends: 15573 [2022-07-13 11:40:53,427 INFO L226 Difference]: Without dead ends: 7904 [2022-07-13 11:40:53,433 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 11:40:53,433 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 38 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:53,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 575 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:40:53,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2022-07-13 11:40:53,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 7692. [2022-07-13 11:40:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7692 states, 7691 states have (on average 1.400988167988558) internal successors, (10775), 7691 states have internal predecessors, (10775), 0 states have call successors, (0), 0 states 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 11:40:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7692 states to 7692 states and 10775 transitions. [2022-07-13 11:40:53,641 INFO L78 Accepts]: Start accepts. Automaton has 7692 states and 10775 transitions. Word has length 290 [2022-07-13 11:40:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:53,642 INFO L495 AbstractCegarLoop]: Abstraction has 7692 states and 10775 transitions. [2022-07-13 11:40:53,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:53,642 INFO L276 IsEmpty]: Start isEmpty. Operand 7692 states and 10775 transitions. [2022-07-13 11:40:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-13 11:40:53,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:53,650 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:53,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-07-13 11:40:53,650 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:53,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:53,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1567314995, now seen corresponding path program 1 times [2022-07-13 11:40:53,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:53,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569086734] [2022-07-13 11:40:53,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:53,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:53,767 INFO L134 CoverageAnalysis]: Checked inductivity of 717 backedges. 484 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2022-07-13 11:40:53,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:53,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569086734] [2022-07-13 11:40:53,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569086734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:53,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:53,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:53,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115815406] [2022-07-13 11:40:53,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:53,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:53,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:53,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:53,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:53,769 INFO L87 Difference]: Start difference. First operand 7692 states and 10775 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 11:40:54,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:54,607 INFO L93 Difference]: Finished difference Result 15517 states and 21711 transitions. [2022-07-13 11:40:54,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:54,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 291 [2022-07-13 11:40:54,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:54,616 INFO L225 Difference]: With dead ends: 15517 [2022-07-13 11:40:54,616 INFO L226 Difference]: Without dead ends: 7792 [2022-07-13 11:40:54,622 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 11:40:54,622 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 26 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:54,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 573 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:40:54,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7792 states. [2022-07-13 11:40:54,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7792 to 7636. [2022-07-13 11:40:54,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7636 states, 7635 states have (on average 1.4020956123117223) internal successors, (10705), 7635 states have internal predecessors, (10705), 0 states have call successors, (0), 0 states 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 11:40:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7636 states to 7636 states and 10705 transitions. [2022-07-13 11:40:54,789 INFO L78 Accepts]: Start accepts. Automaton has 7636 states and 10705 transitions. Word has length 291 [2022-07-13 11:40:54,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:54,789 INFO L495 AbstractCegarLoop]: Abstraction has 7636 states and 10705 transitions. [2022-07-13 11:40:54,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 11:40:54,789 INFO L276 IsEmpty]: Start isEmpty. Operand 7636 states and 10705 transitions. [2022-07-13 11:40:54,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2022-07-13 11:40:54,796 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:54,796 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:54,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-07-13 11:40:54,797 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:54,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1976633504, now seen corresponding path program 1 times [2022-07-13 11:40:54,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:54,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593494255] [2022-07-13 11:40:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:54,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:54,942 INFO L134 CoverageAnalysis]: Checked inductivity of 859 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2022-07-13 11:40:54,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:54,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593494255] [2022-07-13 11:40:54,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593494255] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:54,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:54,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:40:54,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407907711] [2022-07-13 11:40:54,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:54,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:40:54,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:40:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:40:54,944 INFO L87 Difference]: Start difference. First operand 7636 states and 10705 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 11:40:56,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:40:57,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:40:57,305 INFO L93 Difference]: Finished difference Result 15433 states and 21599 transitions. [2022-07-13 11:40:57,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:40:57,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 291 [2022-07-13 11:40:57,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:40:57,314 INFO L225 Difference]: With dead ends: 15433 [2022-07-13 11:40:57,314 INFO L226 Difference]: Without dead ends: 7820 [2022-07-13 11:40:57,320 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 11:40:57,320 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 35 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:40:57,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 573 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:40:57,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7820 states. [2022-07-13 11:40:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7820 to 7636. [2022-07-13 11:40:57,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7636 states, 7635 states have (on average 1.4002619515389654) internal successors, (10691), 7635 states have internal predecessors, (10691), 0 states have call successors, (0), 0 states 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 11:40:57,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7636 states to 7636 states and 10691 transitions. [2022-07-13 11:40:57,485 INFO L78 Accepts]: Start accepts. Automaton has 7636 states and 10691 transitions. Word has length 291 [2022-07-13 11:40:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:40:57,486 INFO L495 AbstractCegarLoop]: Abstraction has 7636 states and 10691 transitions. [2022-07-13 11:40:57,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 11:40:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 7636 states and 10691 transitions. [2022-07-13 11:40:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-07-13 11:40:57,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:40:57,493 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:40:57,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-07-13 11:40:57,493 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:40:57,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:40:57,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1437243622, now seen corresponding path program 1 times [2022-07-13 11:40:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:40:57,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863725417] [2022-07-13 11:40:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:40:57,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:40:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:40:57,612 INFO L134 CoverageAnalysis]: Checked inductivity of 764 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2022-07-13 11:40:57,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:40:57,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863725417] [2022-07-13 11:40:57,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863725417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:40:57,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:40:57,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:40:57,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796027069] [2022-07-13 11:40:57,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:40:57,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:40:57,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:40:57,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:40:57,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:40:57,616 INFO L87 Difference]: Start difference. First operand 7636 states and 10691 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:40:58,802 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 11:41:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:41:00,129 INFO L93 Difference]: Finished difference Result 21900 states and 30699 transitions. [2022-07-13 11:41:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:41:00,131 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2022-07-13 11:41:00,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:41:00,147 INFO L225 Difference]: With dead ends: 21900 [2022-07-13 11:41:00,147 INFO L226 Difference]: Without dead ends: 14287 [2022-07-13 11:41:00,154 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 11:41:00,155 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 131 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:41:00,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 922 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 11:41:00,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14287 states. [2022-07-13 11:41:00,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14287 to 14114. [2022-07-13 11:41:00,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14114 states, 14113 states have (on average 1.4042372280875788) internal successors, (19818), 14113 states have internal predecessors, (19818), 0 states have call successors, (0), 0 states 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 11:41:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14114 states to 14114 states and 19818 transitions. [2022-07-13 11:41:00,573 INFO L78 Accepts]: Start accepts. Automaton has 14114 states and 19818 transitions. Word has length 294 [2022-07-13 11:41:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:41:00,573 INFO L495 AbstractCegarLoop]: Abstraction has 14114 states and 19818 transitions. [2022-07-13 11:41:00,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:41:00,574 INFO L276 IsEmpty]: Start isEmpty. Operand 14114 states and 19818 transitions. [2022-07-13 11:41:00,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-07-13 11:41:00,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:41:00,584 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:41:00,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-07-13 11:41:00,584 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:41:00,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:41:00,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1969274457, now seen corresponding path program 1 times [2022-07-13 11:41:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:41:00,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004942145] [2022-07-13 11:41:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:41:00,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:41:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:41:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-07-13 11:41:00,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:41:00,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004942145] [2022-07-13 11:41:00,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004942145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:41:00,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:41:00,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:41:00,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124897343] [2022-07-13 11:41:00,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:41:00,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:41:00,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:41:00,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:41:00,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:41:00,766 INFO L87 Difference]: Start difference. First operand 14114 states and 19818 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 11:41:01,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:41:01,671 INFO L93 Difference]: Finished difference Result 30256 states and 42339 transitions. [2022-07-13 11:41:01,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:41:01,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 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 299 [2022-07-13 11:41:01,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:41:01,735 INFO L225 Difference]: With dead ends: 30256 [2022-07-13 11:41:01,736 INFO L226 Difference]: Without dead ends: 16165 [2022-07-13 11:41:01,741 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 11:41:01,742 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 117 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:41:01,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 422 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:41:01,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16165 states. [2022-07-13 11:41:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16165 to 14296. [2022-07-13 11:41:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14296 states, 14295 states have (on average 1.393424274221756) internal successors, (19919), 14295 states have internal predecessors, (19919), 0 states have call successors, (0), 0 states 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 11:41:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14296 states to 14296 states and 19919 transitions. [2022-07-13 11:41:02,071 INFO L78 Accepts]: Start accepts. Automaton has 14296 states and 19919 transitions. Word has length 299 [2022-07-13 11:41:02,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:41:02,071 INFO L495 AbstractCegarLoop]: Abstraction has 14296 states and 19919 transitions. [2022-07-13 11:41:02,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 11:41:02,072 INFO L276 IsEmpty]: Start isEmpty. Operand 14296 states and 19919 transitions. [2022-07-13 11:41:02,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-13 11:41:02,080 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:41:02,081 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:41:02,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-07-13 11:41:02,081 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:41:02,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:41:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1325559243, now seen corresponding path program 1 times [2022-07-13 11:41:02,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:41:02,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608484349] [2022-07-13 11:41:02,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:41:02,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:41:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:41:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 865 backedges. 350 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2022-07-13 11:41:02,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:41:02,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608484349] [2022-07-13 11:41:02,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608484349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:41:02,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:41:02,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:41:02,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805764896] [2022-07-13 11:41:02,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:41:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:41:02,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:41:02,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:41:02,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:41:02,211 INFO L87 Difference]: Start difference. First operand 14296 states and 19919 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 11:41:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:41:03,181 INFO L93 Difference]: Finished difference Result 28679 states and 39949 transitions. [2022-07-13 11:41:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:41:03,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 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 300 [2022-07-13 11:41:03,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:41:03,197 INFO L225 Difference]: With dead ends: 28679 [2022-07-13 11:41:03,197 INFO L226 Difference]: Without dead ends: 14406 [2022-07-13 11:41:03,206 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 11:41:03,207 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 48 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:41:03,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 582 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:41:03,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14406 states. [2022-07-13 11:41:03,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14406 to 14296. [2022-07-13 11:41:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14296 states, 14295 states have (on average 1.3930045470444212) internal successors, (19913), 14295 states have internal predecessors, (19913), 0 states have call successors, (0), 0 states 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 11:41:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14296 states to 14296 states and 19913 transitions. [2022-07-13 11:41:03,553 INFO L78 Accepts]: Start accepts. Automaton has 14296 states and 19913 transitions. Word has length 300 [2022-07-13 11:41:03,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:41:03,553 INFO L495 AbstractCegarLoop]: Abstraction has 14296 states and 19913 transitions. [2022-07-13 11:41:03,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 11:41:03,553 INFO L276 IsEmpty]: Start isEmpty. Operand 14296 states and 19913 transitions. [2022-07-13 11:41:03,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-07-13 11:41:03,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:41:03,563 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 8, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:41:03,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-07-13 11:41:03,563 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:41:03,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:41:03,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1118538538, now seen corresponding path program 1 times [2022-07-13 11:41:03,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:41:03,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097546959] [2022-07-13 11:41:03,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:41:03,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:41:03,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:41:03,704 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 569 proven. 102 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-07-13 11:41:03,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:41:03,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097546959] [2022-07-13 11:41:03,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097546959] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:41:03,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622526447] [2022-07-13 11:41:03,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:41:03,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:41:03,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:41:03,715 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:41:03,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 11:41:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:41:05,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 11:41:05,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:41:05,087 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:41:05,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:41:05,110 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-13 11:41:05,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:41:05,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:41:05,130 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:41:05,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-13 11:41:05,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 11:41:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 570 proven. 96 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2022-07-13 11:41:05,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:41:05,191 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 575 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2022-07-13 11:41:05,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622526447] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 11:41:05,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:41:05,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 11 [2022-07-13 11:41:05,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707170460] [2022-07-13 11:41:05,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:41:05,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:41:05,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:41:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:41:05,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-13 11:41:05,193 INFO L87 Difference]: Start difference. First operand 14296 states and 19913 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 11:41:06,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:41:06,068 INFO L93 Difference]: Finished difference Result 30032 states and 41656 transitions. [2022-07-13 11:41:06,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:41:06,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 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 302 [2022-07-13 11:41:06,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:41:06,088 INFO L225 Difference]: With dead ends: 30032 [2022-07-13 11:41:06,088 INFO L226 Difference]: Without dead ends: 15759 [2022-07-13 11:41:06,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 601 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-13 11:41:06,100 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 90 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:41:06,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 487 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:41:06,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15759 states. [2022-07-13 11:41:06,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15759 to 14296. [2022-07-13 11:41:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14296 states, 14295 states have (on average 1.3793634137810422) internal successors, (19718), 14295 states have internal predecessors, (19718), 0 states have call successors, (0), 0 states 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 11:41:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14296 states to 14296 states and 19718 transitions. [2022-07-13 11:41:06,551 INFO L78 Accepts]: Start accepts. Automaton has 14296 states and 19718 transitions. Word has length 302 [2022-07-13 11:41:06,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:41:06,551 INFO L495 AbstractCegarLoop]: Abstraction has 14296 states and 19718 transitions. [2022-07-13 11:41:06,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 11:41:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 14296 states and 19718 transitions. [2022-07-13 11:41:06,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-07-13 11:41:06,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:41:06,561 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 8, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:41:06,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-13 11:41:06,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:41:06,785 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:41:06,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:41:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash -115556266, now seen corresponding path program 1 times [2022-07-13 11:41:06,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:41:06,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219832471] [2022-07-13 11:41:06,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:41:06,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:41:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:41:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 583 proven. 0 refuted. 0 times theorem prover too weak. 422 trivial. 0 not checked. [2022-07-13 11:41:06,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:41:06,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219832471] [2022-07-13 11:41:06,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219832471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:41:06,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:41:06,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:41:06,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823699952] [2022-07-13 11:41:06,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:41:06,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:41:06,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:41:06,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:41:06,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:41:06,918 INFO L87 Difference]: Start difference. First operand 14296 states and 19718 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 11:41:08,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:41:08,255 INFO L93 Difference]: Finished difference Result 30088 states and 41439 transitions. [2022-07-13 11:41:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:41:08,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 303 [2022-07-13 11:41:08,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:41:08,271 INFO L225 Difference]: With dead ends: 30088 [2022-07-13 11:41:08,272 INFO L226 Difference]: Without dead ends: 15815 [2022-07-13 11:41:08,278 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 11:41:08,279 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 121 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:41:08,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 358 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 11:41:08,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15815 states. [2022-07-13 11:41:08,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15815 to 14296. [2022-07-13 11:41:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14296 states, 14295 states have (on average 1.3594963273871983) internal successors, (19434), 14295 states have internal predecessors, (19434), 0 states have call successors, (0), 0 states 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 11:41:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14296 states to 14296 states and 19434 transitions. [2022-07-13 11:41:08,634 INFO L78 Accepts]: Start accepts. Automaton has 14296 states and 19434 transitions. Word has length 303 [2022-07-13 11:41:08,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:41:08,635 INFO L495 AbstractCegarLoop]: Abstraction has 14296 states and 19434 transitions. [2022-07-13 11:41:08,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 11:41:08,635 INFO L276 IsEmpty]: Start isEmpty. Operand 14296 states and 19434 transitions. [2022-07-13 11:41:08,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-07-13 11:41:08,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:41:08,644 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:41:08,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-07-13 11:41:08,644 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:41:08,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:41:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2042612913, now seen corresponding path program 1 times [2022-07-13 11:41:08,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:41:08,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354214426] [2022-07-13 11:41:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:41:08,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:41:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:41:08,760 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 570 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-13 11:41:08,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:41:08,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354214426] [2022-07-13 11:41:08,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354214426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:41:08,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:41:08,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:41:08,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133065956] [2022-07-13 11:41:08,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:41:08,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:41:08,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:41:08,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:41:08,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:41:08,762 INFO L87 Difference]: Start difference. First operand 14296 states and 19434 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 11:41:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:41:09,686 INFO L93 Difference]: Finished difference Result 28881 states and 39203 transitions. [2022-07-13 11:41:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:41:09,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 304 [2022-07-13 11:41:09,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:41:09,704 INFO L225 Difference]: With dead ends: 28881 [2022-07-13 11:41:09,704 INFO L226 Difference]: Without dead ends: 14608 [2022-07-13 11:41:09,713 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 11:41:09,714 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 24 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:41:09,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 569 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:41:09,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14608 states. [2022-07-13 11:41:10,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14608 to 14296. [2022-07-13 11:41:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14296 states, 14295 states have (on average 1.3575376005596362) internal successors, (19406), 14295 states have internal predecessors, (19406), 0 states have call successors, (0), 0 states 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 11:41:10,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14296 states to 14296 states and 19406 transitions. [2022-07-13 11:41:10,081 INFO L78 Accepts]: Start accepts. Automaton has 14296 states and 19406 transitions. Word has length 304 [2022-07-13 11:41:10,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:41:10,081 INFO L495 AbstractCegarLoop]: Abstraction has 14296 states and 19406 transitions. [2022-07-13 11:41:10,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 11:41:10,082 INFO L276 IsEmpty]: Start isEmpty. Operand 14296 states and 19406 transitions. [2022-07-13 11:41:10,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-07-13 11:41:10,091 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:41:10,091 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:41:10,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-07-13 11:41:10,092 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:41:10,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:41:10,092 INFO L85 PathProgramCache]: Analyzing trace with hash 807976658, now seen corresponding path program 1 times [2022-07-13 11:41:10,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:41:10,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435619722] [2022-07-13 11:41:10,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:41:10,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:41:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:41:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 576 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2022-07-13 11:41:10,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:41:10,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435619722] [2022-07-13 11:41:10,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435619722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:41:10,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:41:10,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:41:10,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008573302] [2022-07-13 11:41:10,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:41:10,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:41:10,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:41:10,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:41:10,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:41:10,211 INFO L87 Difference]: Start difference. First operand 14296 states and 19406 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:41:11,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:41:11,201 INFO L93 Difference]: Finished difference Result 28769 states and 39007 transitions. [2022-07-13 11:41:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:41:11,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 305 [2022-07-13 11:41:11,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:41:11,217 INFO L225 Difference]: With dead ends: 28769 [2022-07-13 11:41:11,218 INFO L226 Difference]: Without dead ends: 14160 [2022-07-13 11:41:11,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:41:11,228 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 20 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:41:11,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 561 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:41:11,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14160 states. [2022-07-13 11:41:11,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14160 to 13344. [2022-07-13 11:41:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13344 states, 13343 states have (on average 1.3641609832871169) internal successors, (18202), 13343 states have internal predecessors, (18202), 0 states have call successors, (0), 0 states 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 11:41:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13344 states to 13344 states and 18202 transitions. [2022-07-13 11:41:11,574 INFO L78 Accepts]: Start accepts. Automaton has 13344 states and 18202 transitions. Word has length 305 [2022-07-13 11:41:11,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:41:11,574 INFO L495 AbstractCegarLoop]: Abstraction has 13344 states and 18202 transitions. [2022-07-13 11:41:11,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:41:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 13344 states and 18202 transitions. [2022-07-13 11:41:11,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-07-13 11:41:11,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:41:11,583 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:41:11,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-07-13 11:41:11,584 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:41:11,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:41:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1413227118, now seen corresponding path program 1 times [2022-07-13 11:41:11,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:41:11,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333663437] [2022-07-13 11:41:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:41:11,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:41:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:41:11,702 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 547 proven. 0 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2022-07-13 11:41:11,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:41:11,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333663437] [2022-07-13 11:41:11,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333663437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:41:11,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:41:11,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 11:41:11,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873122640] [2022-07-13 11:41:11,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:41:11,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:41:11,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:41:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:41:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:41:11,704 INFO L87 Difference]: Start difference. First operand 13344 states and 18202 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 11:41:13,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:41:13,058 INFO L93 Difference]: Finished difference Result 27369 states and 37309 transitions. [2022-07-13 11:41:13,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:41:13,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 312 [2022-07-13 11:41:13,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:41:13,074 INFO L225 Difference]: With dead ends: 27369 [2022-07-13 11:41:13,075 INFO L226 Difference]: Without dead ends: 14020 [2022-07-13 11:41:13,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:41:13,085 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 15 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:41:13,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 553 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 11:41:13,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14020 states. [2022-07-13 11:41:13,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14020 to 13344. [2022-07-13 11:41:13,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13344 states, 13343 states have (on average 1.3641609832871169) internal successors, (18202), 13343 states have internal predecessors, (18202), 0 states have call successors, (0), 0 states 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 11:41:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13344 states to 13344 states and 18202 transitions. [2022-07-13 11:41:13,439 INFO L78 Accepts]: Start accepts. Automaton has 13344 states and 18202 transitions. Word has length 312 [2022-07-13 11:41:13,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:41:13,439 INFO L495 AbstractCegarLoop]: Abstraction has 13344 states and 18202 transitions. [2022-07-13 11:41:13,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 11:41:13,439 INFO L276 IsEmpty]: Start isEmpty. Operand 13344 states and 18202 transitions. [2022-07-13 11:41:13,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-07-13 11:41:13,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:41:13,448 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:41:13,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-07-13 11:41:13,448 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:41:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:41:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash 584613866, now seen corresponding path program 1 times [2022-07-13 11:41:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:41:13,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297844084] [2022-07-13 11:41:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:41:13,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:41:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:41:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 905 trivial. 0 not checked. [2022-07-13 11:41:13,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:41:13,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297844084] [2022-07-13 11:41:13,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297844084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:41:13,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:41:13,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:41:13,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505766882] [2022-07-13 11:41:13,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:41:13,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:41:13,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:41:13,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:41:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:41:13,933 INFO L87 Difference]: Start difference. First operand 13344 states and 18202 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 11:41:15,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:41:15,353 INFO L93 Difference]: Finished difference Result 26685 states and 36400 transitions. [2022-07-13 11:41:15,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:41:15,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 319 [2022-07-13 11:41:15,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:41:15,368 INFO L225 Difference]: With dead ends: 26685 [2022-07-13 11:41:15,368 INFO L226 Difference]: Without dead ends: 13344 [2022-07-13 11:41:15,378 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 11:41:15,378 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:41:15,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 671 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 11:41:15,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13344 states. [2022-07-13 11:41:15,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13344 to 13344. [2022-07-13 11:41:15,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13344 states, 13343 states have (on average 1.3640860376227235) internal successors, (18201), 13343 states have internal predecessors, (18201), 0 states have call successors, (0), 0 states 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 11:41:15,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13344 states to 13344 states and 18201 transitions. [2022-07-13 11:41:15,727 INFO L78 Accepts]: Start accepts. Automaton has 13344 states and 18201 transitions. Word has length 319 [2022-07-13 11:41:15,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:41:15,727 INFO L495 AbstractCegarLoop]: Abstraction has 13344 states and 18201 transitions. [2022-07-13 11:41:15,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 11:41:15,727 INFO L276 IsEmpty]: Start isEmpty. Operand 13344 states and 18201 transitions. [2022-07-13 11:41:15,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-07-13 11:41:15,735 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:41:15,736 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:41:15,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-07-13 11:41:15,736 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:41:15,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:41:15,736 INFO L85 PathProgramCache]: Analyzing trace with hash -23101204, now seen corresponding path program 1 times [2022-07-13 11:41:15,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:41:15,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197234559] [2022-07-13 11:41:15,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:41:15,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:41:15,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:41:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 399 proven. 413 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-13 11:41:16,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:41:16,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197234559] [2022-07-13 11:41:16,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197234559] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:41:16,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543645964] [2022-07-13 11:41:16,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:41:16,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:41:16,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:41:16,590 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 11:41:16,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 11:41:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:41:18,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 1623 conjuncts, 112 conjunts are in the unsatisfiable core [2022-07-13 11:41:18,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:41:18,063 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-13 11:41:18,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2022-07-13 11:41:18,143 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-13 11:41:18,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 10 [2022-07-13 11:41:18,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:41:18,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 11:41:18,200 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 11:41:18,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 76 [2022-07-13 11:41:18,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:18,236 INFO L356 Elim1Store]: treesize reduction 68, result has 46.5 percent of original size [2022-07-13 11:41:18,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 84 [2022-07-13 11:41:18,254 INFO L356 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-07-13 11:41:18,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 99 [2022-07-13 11:41:18,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-07-13 11:41:18,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 69 [2022-07-13 11:41:18,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:18,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 140 [2022-07-13 11:41:18,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:18,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:18,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:18,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:18,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:18,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:18,466 INFO L356 Elim1Store]: treesize reduction 230, result has 24.1 percent of original size [2022-07-13 11:41:18,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 141 treesize of output 164 [2022-07-13 11:41:18,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:18,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 144 [2022-07-13 11:41:19,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:19,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 138 [2022-07-13 11:41:19,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:19,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:19,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:19,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:19,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:19,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:19,711 INFO L356 Elim1Store]: treesize reduction 270, result has 22.6 percent of original size [2022-07-13 11:41:19,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 150 treesize of output 167 [2022-07-13 11:41:19,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:19,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 129 [2022-07-13 11:41:22,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:22,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 104 [2022-07-13 11:41:22,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:22,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:22,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:22,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:22,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:22,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:23,009 INFO L356 Elim1Store]: treesize reduction 284, result has 18.6 percent of original size [2022-07-13 11:41:23,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 138 treesize of output 159 [2022-07-13 11:41:23,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:23,015 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 105 [2022-07-13 11:41:23,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:23,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 86 [2022-07-13 11:41:23,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:23,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 98 [2022-07-13 11:41:23,219 INFO L356 Elim1Store]: treesize reduction 312, result has 23.7 percent of original size [2022-07-13 11:41:23,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 123 treesize of output 161 [2022-07-13 11:41:24,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:24,622 INFO L356 Elim1Store]: treesize reduction 60, result has 45.9 percent of original size [2022-07-13 11:41:24,622 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 210 treesize of output 205 [2022-07-13 11:41:24,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:24,691 INFO L356 Elim1Store]: treesize reduction 40, result has 49.4 percent of original size [2022-07-13 11:41:24,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 187 treesize of output 170 [2022-07-13 11:41:24,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:41:24,817 INFO L356 Elim1Store]: treesize reduction 132, result has 44.3 percent of original size [2022-07-13 11:41:24,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 91 treesize of output 161 [2022-07-13 11:42:16,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:42:16,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:42:16,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:42:16,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:42:16,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:42:16,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:42:16,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 361 treesize of output 319 [2022-07-13 11:42:16,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:42:16,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:42:16,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:42:16,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:42:16,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:42:16,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:42:16,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 337 treesize of output 307 [2022-07-13 11:42:16,828 INFO L356 Elim1Store]: treesize reduction 473, result has 14.2 percent of original size [2022-07-13 11:42:16,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 16 case distinctions, treesize of input 325 treesize of output 345