./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl/s3_srvr.blast.08.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 09c9794f5f58d2adbebf8646c3b68c44e11cb48c003f44efee5afa1932865143 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 23:52:57,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:52:57,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:52:57,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:52:57,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:52:57,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:52:57,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:52:57,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:52:57,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:52:57,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:52:57,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:52:57,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:52:57,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:52:57,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:52:57,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:52:57,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:52:57,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:52:57,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:52:57,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:52:57,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:52:57,839 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:52:57,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:52:57,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:52:57,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:52:57,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:52:57,850 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:52:57,851 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:52:57,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:52:57,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:52:57,853 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:52:57,854 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:52:57,854 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:52:57,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:52:57,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:52:57,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:52:57,858 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:52:57,858 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:52:57,859 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:52:57,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:52:57,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:52:57,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:52:57,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:52:57,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 23:52:57,891 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:52:57,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:52:57,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:52:57,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:52:57,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:52:57,893 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:52:57,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:52:57,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:52:57,894 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:52:57,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:52:57,895 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:52:57,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 23:52:57,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:52:57,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:52:57,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:52:57,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:52:57,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:52:57,897 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:52:57,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:52:57,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:52:57,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:52:57,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:52:57,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:52:57,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:52:57,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:52:57,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:52:57,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:52:57,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:52:57,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 23:52:57,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 23:52:57,900 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:52:57,900 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:52:57,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:52:57,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09c9794f5f58d2adbebf8646c3b68c44e11cb48c003f44efee5afa1932865143 [2022-07-11 23:52:58,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:52:58,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:52:58,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:52:58,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:52:58,136 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:52:58,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-2.c [2022-07-11 23:52:58,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed29cc0dc/df88ab326f844e7db54cea655da71e9e/FLAGb0969d6c1 [2022-07-11 23:52:58,735 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:52:58,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.08.i.cil-2.c [2022-07-11 23:52:58,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed29cc0dc/df88ab326f844e7db54cea655da71e9e/FLAGb0969d6c1 [2022-07-11 23:52:59,188 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed29cc0dc/df88ab326f844e7db54cea655da71e9e [2022-07-11 23:52:59,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:52:59,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:52:59,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:52:59,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:52:59,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:52:59,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:52:59" (1/1) ... [2022-07-11 23:52:59,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b14d453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59, skipping insertion in model container [2022-07-11 23:52:59,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:52:59" (1/1) ... [2022-07-11 23:52:59,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:52:59,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:52:59,592 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.08.i.cil-2.c[74416,74429] [2022-07-11 23:52:59,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:52:59,618 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:52:59,748 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.08.i.cil-2.c[74416,74429] [2022-07-11 23:52:59,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:52:59,774 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:52:59,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59 WrapperNode [2022-07-11 23:52:59,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:52:59,777 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:52:59,777 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:52:59,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:52:59,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59" (1/1) ... [2022-07-11 23:52:59,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59" (1/1) ... [2022-07-11 23:52:59,875 INFO L137 Inliner]: procedures = 31, calls = 223, calls flagged for inlining = 7, calls inlined = 3, statements flattened = 793 [2022-07-11 23:52:59,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:52:59,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:52:59,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:52:59,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:52:59,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59" (1/1) ... [2022-07-11 23:52:59,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59" (1/1) ... [2022-07-11 23:52:59,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59" (1/1) ... [2022-07-11 23:52:59,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59" (1/1) ... [2022-07-11 23:52:59,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59" (1/1) ... [2022-07-11 23:52:59,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59" (1/1) ... [2022-07-11 23:52:59,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59" (1/1) ... [2022-07-11 23:52:59,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:52:59,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:52:59,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:52:59,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:52:59,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59" (1/1) ... [2022-07-11 23:52:59,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:53:00,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:53:00,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-11 23:53:00,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-11 23:53:00,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:53:00,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-11 23:53:00,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 23:53:00,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 23:53:00,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-11 23:53:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 23:53:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-11 23:53:00,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:53:00,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:53:00,261 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:53:00,262 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:53:00,274 WARN L811 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-07-11 23:53:01,356 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2022-07-11 23:53:01,357 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2022-07-11 23:53:01,357 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:53:01,363 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:53:01,363 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-11 23:53:01,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:53:01 BoogieIcfgContainer [2022-07-11 23:53:01,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:53:01,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:53:01,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:53:01,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:53:01,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:52:59" (1/3) ... [2022-07-11 23:53:01,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258ae001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:53:01, skipping insertion in model container [2022-07-11 23:53:01,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:52:59" (2/3) ... [2022-07-11 23:53:01,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258ae001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:53:01, skipping insertion in model container [2022-07-11 23:53:01,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:53:01" (3/3) ... [2022-07-11 23:53:01,372 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.08.i.cil-2.c [2022-07-11 23:53:01,383 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:53:01,383 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:53:01,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:53:01,430 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@6e4a4119, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@22ca2a4 [2022-07-11 23:53:01,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:53:01,434 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) [2022-07-11 23:53:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-11 23:53:01,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:01,443 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] [2022-07-11 23:53:01,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:01,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash 917223126, now seen corresponding path program 1 times [2022-07-11 23:53:01,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:01,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086219613] [2022-07-11 23:53:01,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:01,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:01,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:01,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086219613] [2022-07-11 23:53:01,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086219613] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:01,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:01,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:01,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239136257] [2022-07-11 23:53:01,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:01,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:01,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:02,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:02,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:02,027 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 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) [2022-07-11 23:53:02,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:02,996 INFO L93 Difference]: Finished difference Result 420 states and 714 transitions. [2022-07-11 23:53:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:03,000 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 [2022-07-11 23:53:03,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:03,012 INFO L225 Difference]: With dead ends: 420 [2022-07-11 23:53:03,012 INFO L226 Difference]: Without dead ends: 255 [2022-07-11 23:53:03,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:03,020 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 154 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:03,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 441 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-11 23:53:03,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-11 23:53:03,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 177. [2022-07-11 23:53:03,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.6079545454545454) internal successors, (283), 176 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 283 transitions. [2022-07-11 23:53:03,067 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 283 transitions. Word has length 44 [2022-07-11 23:53:03,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:03,068 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 283 transitions. [2022-07-11 23:53:03,068 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) [2022-07-11 23:53:03,068 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 283 transitions. [2022-07-11 23:53:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-11 23:53:03,071 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:03,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:03,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 23:53:03,072 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:03,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:03,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1833262921, now seen corresponding path program 1 times [2022-07-11 23:53:03,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:03,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155904813] [2022-07-11 23:53:03,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:03,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:03,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:03,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:03,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155904813] [2022-07-11 23:53:03,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155904813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:03,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:03,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:03,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941055774] [2022-07-11 23:53:03,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:03,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:03,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:03,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:03,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:03,259 INFO L87 Difference]: Start difference. First operand 177 states and 283 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:03,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:03,663 INFO L93 Difference]: Finished difference Result 372 states and 593 transitions. [2022-07-11 23:53:03,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:03,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-07-11 23:53:03,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:03,666 INFO L225 Difference]: With dead ends: 372 [2022-07-11 23:53:03,667 INFO L226 Difference]: Without dead ends: 205 [2022-07-11 23:53:03,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:03,668 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 22 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:03,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 469 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 23:53:03,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-11 23:53:03,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 188. [2022-07-11 23:53:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.6149732620320856) internal successors, (302), 187 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:03,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 302 transitions. [2022-07-11 23:53:03,682 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 302 transitions. Word has length 45 [2022-07-11 23:53:03,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:03,682 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 302 transitions. [2022-07-11 23:53:03,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:03,682 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 302 transitions. [2022-07-11 23:53:03,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-11 23:53:03,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:03,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:03,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-11 23:53:03,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:03,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:03,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1138501760, now seen corresponding path program 1 times [2022-07-11 23:53:03,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:03,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669555898] [2022-07-11 23:53:03,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:03,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:03,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:03,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669555898] [2022-07-11 23:53:03,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669555898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:03,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:03,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:03,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398627823] [2022-07-11 23:53:03,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:03,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:03,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:03,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:03,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:03,854 INFO L87 Difference]: Start difference. First operand 188 states and 302 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) [2022-07-11 23:53:04,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:04,515 INFO L93 Difference]: Finished difference Result 511 states and 825 transitions. [2022-07-11 23:53:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:04,516 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 [2022-07-11 23:53:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:04,518 INFO L225 Difference]: With dead ends: 511 [2022-07-11 23:53:04,518 INFO L226 Difference]: Without dead ends: 344 [2022-07-11 23:53:04,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:04,520 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 143 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:04,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 614 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:53:04,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-07-11 23:53:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 220. [2022-07-11 23:53:04,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.6118721461187215) internal successors, (353), 219 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:04,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 353 transitions. [2022-07-11 23:53:04,532 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 353 transitions. Word has length 58 [2022-07-11 23:53:04,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:04,533 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 353 transitions. [2022-07-11 23:53:04,533 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) [2022-07-11 23:53:04,533 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 353 transitions. [2022-07-11 23:53:04,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-11 23:53:04,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:04,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:04,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-11 23:53:04,536 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:04,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:04,536 INFO L85 PathProgramCache]: Analyzing trace with hash 447657361, now seen corresponding path program 1 times [2022-07-11 23:53:04,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:04,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641229222] [2022-07-11 23:53:04,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:04,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:04,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:04,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:04,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641229222] [2022-07-11 23:53:04,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641229222] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:04,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:04,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:04,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936485488] [2022-07-11 23:53:04,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:04,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:04,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:04,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:04,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:04,678 INFO L87 Difference]: Start difference. First operand 220 states and 353 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:05,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:05,170 INFO L93 Difference]: Finished difference Result 435 states and 694 transitions. [2022-07-11 23:53:05,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:05,171 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 [2022-07-11 23:53:05,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:05,172 INFO L225 Difference]: With dead ends: 435 [2022-07-11 23:53:05,172 INFO L226 Difference]: Without dead ends: 236 [2022-07-11 23:53:05,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:05,174 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 28 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:05,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 473 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:05,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-11 23:53:05,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 220. [2022-07-11 23:53:05,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.6073059360730593) internal successors, (352), 219 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 352 transitions. [2022-07-11 23:53:05,184 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 352 transitions. Word has length 59 [2022-07-11 23:53:05,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:05,184 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 352 transitions. [2022-07-11 23:53:05,185 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) [2022-07-11 23:53:05,185 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 352 transitions. [2022-07-11 23:53:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-11 23:53:05,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:05,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:05,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-11 23:53:05,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:05,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:05,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1960406491, now seen corresponding path program 1 times [2022-07-11 23:53:05,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:05,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500813603] [2022-07-11 23:53:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:05,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:05,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:05,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500813603] [2022-07-11 23:53:05,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500813603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:05,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:05,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:05,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640865474] [2022-07-11 23:53:05,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:05,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:05,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:05,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:05,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:05,303 INFO L87 Difference]: Start difference. First operand 220 states and 352 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) [2022-07-11 23:53:05,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:05,827 INFO L93 Difference]: Finished difference Result 435 states and 693 transitions. [2022-07-11 23:53:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:05,828 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 [2022-07-11 23:53:05,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:05,829 INFO L225 Difference]: With dead ends: 435 [2022-07-11 23:53:05,829 INFO L226 Difference]: Without dead ends: 236 [2022-07-11 23:53:05,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:05,831 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 26 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:05,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 473 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:05,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-11 23:53:05,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 220. [2022-07-11 23:53:05,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.6027397260273972) internal successors, (351), 219 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:05,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 351 transitions. [2022-07-11 23:53:05,838 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 351 transitions. Word has length 59 [2022-07-11 23:53:05,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:05,839 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 351 transitions. [2022-07-11 23:53:05,839 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) [2022-07-11 23:53:05,839 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 351 transitions. [2022-07-11 23:53:05,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-11 23:53:05,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:05,841 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:05,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-11 23:53:05,841 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:05,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:05,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1482444028, now seen corresponding path program 1 times [2022-07-11 23:53:05,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:05,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907532927] [2022-07-11 23:53:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:05,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:05,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:05,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907532927] [2022-07-11 23:53:05,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907532927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:05,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:05,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:05,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393294132] [2022-07-11 23:53:05,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:05,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:05,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:05,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:05,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:05,970 INFO L87 Difference]: Start difference. First operand 220 states and 351 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) [2022-07-11 23:53:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:06,581 INFO L93 Difference]: Finished difference Result 434 states and 691 transitions. [2022-07-11 23:53:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:06,582 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 [2022-07-11 23:53:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:06,583 INFO L225 Difference]: With dead ends: 434 [2022-07-11 23:53:06,583 INFO L226 Difference]: Without dead ends: 235 [2022-07-11 23:53:06,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:06,584 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 19 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:06,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 475 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:53:06,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-07-11 23:53:06,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 220. [2022-07-11 23:53:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.5981735159817352) internal successors, (350), 219 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 350 transitions. [2022-07-11 23:53:06,590 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 350 transitions. Word has length 59 [2022-07-11 23:53:06,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:06,590 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 350 transitions. [2022-07-11 23:53:06,590 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) [2022-07-11 23:53:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 350 transitions. [2022-07-11 23:53:06,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-11 23:53:06,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:06,596 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:06,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-11 23:53:06,596 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:06,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:06,597 INFO L85 PathProgramCache]: Analyzing trace with hash -520776260, now seen corresponding path program 1 times [2022-07-11 23:53:06,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:06,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339380509] [2022-07-11 23:53:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:06,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:06,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:06,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339380509] [2022-07-11 23:53:06,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339380509] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:06,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:06,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:06,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410299419] [2022-07-11 23:53:06,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:06,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:06,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:06,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:06,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:06,691 INFO L87 Difference]: Start difference. First operand 220 states and 350 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) [2022-07-11 23:53:07,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:07,502 INFO L93 Difference]: Finished difference Result 520 states and 826 transitions. [2022-07-11 23:53:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:07,503 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 [2022-07-11 23:53:07,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:07,504 INFO L225 Difference]: With dead ends: 520 [2022-07-11 23:53:07,504 INFO L226 Difference]: Without dead ends: 321 [2022-07-11 23:53:07,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:07,505 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 142 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:07,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 332 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-11 23:53:07,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-07-11 23:53:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 221. [2022-07-11 23:53:07,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5863636363636364) internal successors, (349), 220 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 349 transitions. [2022-07-11 23:53:07,512 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 349 transitions. Word has length 59 [2022-07-11 23:53:07,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:07,512 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 349 transitions. [2022-07-11 23:53:07,513 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) [2022-07-11 23:53:07,513 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 349 transitions. [2022-07-11 23:53:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-11 23:53:07,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:07,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:07,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-11 23:53:07,514 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:07,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash 321770025, now seen corresponding path program 1 times [2022-07-11 23:53:07,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:07,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029985610] [2022-07-11 23:53:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:07,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:07,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:07,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029985610] [2022-07-11 23:53:07,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029985610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:07,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:07,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:07,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039993865] [2022-07-11 23:53:07,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:07,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:07,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:07,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:07,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:07,644 INFO L87 Difference]: Start difference. First operand 221 states and 349 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:08,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:08,720 INFO L93 Difference]: Finished difference Result 434 states and 687 transitions. [2022-07-11 23:53:08,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:08,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-07-11 23:53:08,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:08,722 INFO L225 Difference]: With dead ends: 434 [2022-07-11 23:53:08,722 INFO L226 Difference]: Without dead ends: 234 [2022-07-11 23:53:08,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:08,723 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 22 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:08,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 479 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-11 23:53:08,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-11 23:53:08,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 221. [2022-07-11 23:53:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5818181818181818) internal successors, (348), 220 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 348 transitions. [2022-07-11 23:53:08,729 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 348 transitions. Word has length 60 [2022-07-11 23:53:08,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:08,729 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 348 transitions. [2022-07-11 23:53:08,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:08,730 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 348 transitions. [2022-07-11 23:53:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-11 23:53:08,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:08,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:08,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-11 23:53:08,731 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:08,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:08,732 INFO L85 PathProgramCache]: Analyzing trace with hash -680439318, now seen corresponding path program 1 times [2022-07-11 23:53:08,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:08,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651018625] [2022-07-11 23:53:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:08,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:08,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:08,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651018625] [2022-07-11 23:53:08,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651018625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:08,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:08,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:08,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130082556] [2022-07-11 23:53:08,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:08,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:08,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:08,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:08,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:08,821 INFO L87 Difference]: Start difference. First operand 221 states and 348 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:09,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:09,661 INFO L93 Difference]: Finished difference Result 434 states and 686 transitions. [2022-07-11 23:53:09,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:09,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-07-11 23:53:09,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:09,663 INFO L225 Difference]: With dead ends: 434 [2022-07-11 23:53:09,663 INFO L226 Difference]: Without dead ends: 234 [2022-07-11 23:53:09,664 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 [2022-07-11 23:53:09,665 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 20 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:09,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 479 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-11 23:53:09,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-11 23:53:09,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 221. [2022-07-11 23:53:09,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5772727272727274) internal successors, (347), 220 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 347 transitions. [2022-07-11 23:53:09,671 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 347 transitions. Word has length 61 [2022-07-11 23:53:09,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:09,671 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 347 transitions. [2022-07-11 23:53:09,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 347 transitions. [2022-07-11 23:53:09,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-11 23:53:09,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:09,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:09,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-11 23:53:09,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:09,674 INFO L85 PathProgramCache]: Analyzing trace with hash -419395186, now seen corresponding path program 1 times [2022-07-11 23:53:09,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:09,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511001214] [2022-07-11 23:53:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:09,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:09,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:09,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511001214] [2022-07-11 23:53:09,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511001214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:09,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:09,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:09,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264688022] [2022-07-11 23:53:09,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:09,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:09,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:09,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:09,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:09,783 INFO L87 Difference]: Start difference. First operand 221 states and 347 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:10,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:10,250 INFO L93 Difference]: Finished difference Result 424 states and 672 transitions. [2022-07-11 23:53:10,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:10,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-11 23:53:10,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:10,252 INFO L225 Difference]: With dead ends: 424 [2022-07-11 23:53:10,252 INFO L226 Difference]: Without dead ends: 224 [2022-07-11 23:53:10,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:10,253 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 11 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:10,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 493 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:10,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-11 23:53:10,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2022-07-11 23:53:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.5727272727272728) internal successors, (346), 220 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:10,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 346 transitions. [2022-07-11 23:53:10,258 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 346 transitions. Word has length 62 [2022-07-11 23:53:10,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:10,258 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 346 transitions. [2022-07-11 23:53:10,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:10,258 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 346 transitions. [2022-07-11 23:53:10,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-11 23:53:10,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:10,260 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] [2022-07-11 23:53:10,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-11 23:53:10,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:10,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:10,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1031268618, now seen corresponding path program 1 times [2022-07-11 23:53:10,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:10,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732585676] [2022-07-11 23:53:10,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:10,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:10,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:10,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732585676] [2022-07-11 23:53:10,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732585676] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:10,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:10,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:10,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296892260] [2022-07-11 23:53:10,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:10,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:10,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:10,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:10,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:10,365 INFO L87 Difference]: Start difference. First operand 221 states and 346 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:11,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:11,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:11,901 INFO L93 Difference]: Finished difference Result 521 states and 820 transitions. [2022-07-11 23:53:11,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:11,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-07-11 23:53:11,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:11,904 INFO L225 Difference]: With dead ends: 521 [2022-07-11 23:53:11,904 INFO L226 Difference]: Without dead ends: 321 [2022-07-11 23:53:11,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:11,905 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 119 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:11,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 350 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-11 23:53:11,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-07-11 23:53:11,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 244. [2022-07-11 23:53:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.6090534979423867) internal successors, (391), 243 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 391 transitions. [2022-07-11 23:53:11,912 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 391 transitions. Word has length 62 [2022-07-11 23:53:11,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:11,913 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 391 transitions. [2022-07-11 23:53:11,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:11,913 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 391 transitions. [2022-07-11 23:53:11,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-11 23:53:11,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:11,914 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:11,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-11 23:53:11,915 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:11,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:11,915 INFO L85 PathProgramCache]: Analyzing trace with hash -104601615, now seen corresponding path program 1 times [2022-07-11 23:53:11,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:11,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756918084] [2022-07-11 23:53:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:11,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:12,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:12,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756918084] [2022-07-11 23:53:12,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756918084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:12,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:12,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:12,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951731996] [2022-07-11 23:53:12,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:12,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:12,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:12,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:12,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:12,041 INFO L87 Difference]: Start difference. First operand 244 states and 391 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:13,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:13,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:13,544 INFO L93 Difference]: Finished difference Result 620 states and 1002 transitions. [2022-07-11 23:53:13,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:13,544 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-07-11 23:53:13,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:13,546 INFO L225 Difference]: With dead ends: 620 [2022-07-11 23:53:13,546 INFO L226 Difference]: Without dead ends: 397 [2022-07-11 23:53:13,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:13,548 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 125 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:13,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 342 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-11 23:53:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-07-11 23:53:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 308. [2022-07-11 23:53:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.6384364820846906) internal successors, (503), 307 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 503 transitions. [2022-07-11 23:53:13,557 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 503 transitions. Word has length 90 [2022-07-11 23:53:13,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:13,558 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 503 transitions. [2022-07-11 23:53:13,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:13,558 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 503 transitions. [2022-07-11 23:53:13,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-11 23:53:13,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:13,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:13,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-11 23:53:13,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:13,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:13,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1229101372, now seen corresponding path program 1 times [2022-07-11 23:53:13,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:13,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896905261] [2022-07-11 23:53:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:13,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:53:13,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:13,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896905261] [2022-07-11 23:53:13,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896905261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:13,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:13,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:13,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542863285] [2022-07-11 23:53:13,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:13,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:13,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:13,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:13,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:13,692 INFO L87 Difference]: Start difference. First operand 308 states and 503 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) [2022-07-11 23:53:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:14,620 INFO L93 Difference]: Finished difference Result 712 states and 1158 transitions. [2022-07-11 23:53:14,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:14,621 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 95 [2022-07-11 23:53:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:14,623 INFO L225 Difference]: With dead ends: 712 [2022-07-11 23:53:14,623 INFO L226 Difference]: Without dead ends: 425 [2022-07-11 23:53:14,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:14,624 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 121 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:14,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 330 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-11 23:53:14,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-07-11 23:53:14,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 345. [2022-07-11 23:53:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.6482558139534884) internal successors, (567), 344 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:14,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 567 transitions. [2022-07-11 23:53:14,633 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 567 transitions. Word has length 95 [2022-07-11 23:53:14,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:14,633 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 567 transitions. [2022-07-11 23:53:14,634 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) [2022-07-11 23:53:14,634 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 567 transitions. [2022-07-11 23:53:14,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-11 23:53:14,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:14,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:14,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-11 23:53:14,636 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:14,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1626646691, now seen corresponding path program 1 times [2022-07-11 23:53:14,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:14,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739470908] [2022-07-11 23:53:14,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:14,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-11 23:53:14,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:14,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739470908] [2022-07-11 23:53:14,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739470908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:14,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:14,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:14,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765897824] [2022-07-11 23:53:14,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:14,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:14,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:14,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:14,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:14,731 INFO L87 Difference]: Start difference. First operand 345 states and 567 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:15,950 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 [] [2022-07-11 23:53:16,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:16,141 INFO L93 Difference]: Finished difference Result 710 states and 1171 transitions. [2022-07-11 23:53:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:16,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-07-11 23:53:16,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:16,145 INFO L225 Difference]: With dead ends: 710 [2022-07-11 23:53:16,145 INFO L226 Difference]: Without dead ends: 386 [2022-07-11 23:53:16,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:16,146 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 32 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:16,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 495 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-11 23:53:16,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-07-11 23:53:16,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 367. [2022-07-11 23:53:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.6475409836065573) internal successors, (603), 366 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:16,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 603 transitions. [2022-07-11 23:53:16,155 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 603 transitions. Word has length 96 [2022-07-11 23:53:16,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:16,155 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 603 transitions. [2022-07-11 23:53:16,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:16,156 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 603 transitions. [2022-07-11 23:53:16,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-11 23:53:16,157 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:16,157 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:16,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-11 23:53:16,158 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:16,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:16,158 INFO L85 PathProgramCache]: Analyzing trace with hash 215366845, now seen corresponding path program 1 times [2022-07-11 23:53:16,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:16,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951371901] [2022-07-11 23:53:16,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:16,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-11 23:53:16,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:16,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951371901] [2022-07-11 23:53:16,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951371901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:16,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:16,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:16,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743489306] [2022-07-11 23:53:16,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:16,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:16,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:16,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:16,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:16,283 INFO L87 Difference]: Start difference. First operand 367 states and 603 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:17,485 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:17,703 INFO L93 Difference]: Finished difference Result 731 states and 1205 transitions. [2022-07-11 23:53:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:17,704 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 110 [2022-07-11 23:53:17,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:17,706 INFO L225 Difference]: With dead ends: 731 [2022-07-11 23:53:17,706 INFO L226 Difference]: Without dead ends: 385 [2022-07-11 23:53:17,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:17,707 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 42 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:17,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 497 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-11 23:53:17,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-07-11 23:53:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 367. [2022-07-11 23:53:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.644808743169399) internal successors, (602), 366 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 602 transitions. [2022-07-11 23:53:17,715 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 602 transitions. Word has length 110 [2022-07-11 23:53:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:17,715 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 602 transitions. [2022-07-11 23:53:17,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 602 transitions. [2022-07-11 23:53:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-11 23:53:17,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:17,717 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:17,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-11 23:53:17,717 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:17,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:17,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1504048209, now seen corresponding path program 1 times [2022-07-11 23:53:17,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:17,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633551037] [2022-07-11 23:53:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:17,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-11 23:53:17,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:17,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633551037] [2022-07-11 23:53:17,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633551037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:17,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:17,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:17,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386406885] [2022-07-11 23:53:17,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:17,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:17,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:17,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:17,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:17,814 INFO L87 Difference]: Start difference. First operand 367 states and 602 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:18,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:18,520 INFO L93 Difference]: Finished difference Result 790 states and 1286 transitions. [2022-07-11 23:53:18,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:18,521 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 110 [2022-07-11 23:53:18,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:18,522 INFO L225 Difference]: With dead ends: 790 [2022-07-11 23:53:18,522 INFO L226 Difference]: Without dead ends: 444 [2022-07-11 23:53:18,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:18,524 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 146 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 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 [2022-07-11 23:53:18,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 330 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:53:18,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-11 23:53:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 367. [2022-07-11 23:53:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.6256830601092895) internal successors, (595), 366 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:18,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 595 transitions. [2022-07-11 23:53:18,532 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 595 transitions. Word has length 110 [2022-07-11 23:53:18,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:18,532 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 595 transitions. [2022-07-11 23:53:18,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:18,533 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 595 transitions. [2022-07-11 23:53:18,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-11 23:53:18,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:18,534 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-11 23:53:18,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-11 23:53:18,534 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:18,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1962293608, now seen corresponding path program 1 times [2022-07-11 23:53:18,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:18,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235293128] [2022-07-11 23:53:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:18,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-11 23:53:18,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:18,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235293128] [2022-07-11 23:53:18,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235293128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:18,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:18,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:18,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010551240] [2022-07-11 23:53:18,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:18,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:18,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:18,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:18,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:18,633 INFO L87 Difference]: Start difference. First operand 367 states and 595 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:19,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:19,216 INFO L93 Difference]: Finished difference Result 730 states and 1188 transitions. [2022-07-11 23:53:19,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:19,217 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 110 [2022-07-11 23:53:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:19,218 INFO L225 Difference]: With dead ends: 730 [2022-07-11 23:53:19,218 INFO L226 Difference]: Without dead ends: 384 [2022-07-11 23:53:19,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:19,219 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 33 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:19,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 499 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:53:19,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-11 23:53:19,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 367. [2022-07-11 23:53:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.6229508196721312) internal successors, (594), 366 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 594 transitions. [2022-07-11 23:53:19,227 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 594 transitions. Word has length 110 [2022-07-11 23:53:19,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:19,227 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 594 transitions. [2022-07-11 23:53:19,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:19,228 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 594 transitions. [2022-07-11 23:53:19,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-11 23:53:19,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:19,229 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:19,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-11 23:53:19,229 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:19,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:19,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2092892855, now seen corresponding path program 1 times [2022-07-11 23:53:19,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:19,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465477027] [2022-07-11 23:53:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:19,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:19,317 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-11 23:53:19,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:19,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465477027] [2022-07-11 23:53:19,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465477027] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:19,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:19,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:19,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259208792] [2022-07-11 23:53:19,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:19,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:19,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:19,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:19,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:19,320 INFO L87 Difference]: Start difference. First operand 367 states and 594 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:19,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:19,936 INFO L93 Difference]: Finished difference Result 730 states and 1186 transitions. [2022-07-11 23:53:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:19,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-07-11 23:53:19,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:19,938 INFO L225 Difference]: With dead ends: 730 [2022-07-11 23:53:19,938 INFO L226 Difference]: Without dead ends: 384 [2022-07-11 23:53:19,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:19,939 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 37 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:19,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 499 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:53:19,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-11 23:53:19,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 367. [2022-07-11 23:53:19,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.6202185792349726) internal successors, (593), 366 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:19,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 593 transitions. [2022-07-11 23:53:19,959 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 593 transitions. Word has length 111 [2022-07-11 23:53:19,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:19,959 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 593 transitions. [2022-07-11 23:53:19,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:19,959 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 593 transitions. [2022-07-11 23:53:19,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-11 23:53:19,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:19,961 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:19,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-11 23:53:19,961 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:19,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:19,962 INFO L85 PathProgramCache]: Analyzing trace with hash 522612502, now seen corresponding path program 1 times [2022-07-11 23:53:19,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:19,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941148540] [2022-07-11 23:53:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:19,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-11 23:53:20,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:20,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941148540] [2022-07-11 23:53:20,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941148540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:20,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:20,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:20,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463951423] [2022-07-11 23:53:20,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:20,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:20,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:20,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:20,060 INFO L87 Difference]: Start difference. First operand 367 states and 593 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:20,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:20,622 INFO L93 Difference]: Finished difference Result 730 states and 1184 transitions. [2022-07-11 23:53:20,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:20,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-07-11 23:53:20,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:20,624 INFO L225 Difference]: With dead ends: 730 [2022-07-11 23:53:20,624 INFO L226 Difference]: Without dead ends: 384 [2022-07-11 23:53:20,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:20,625 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 35 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:20,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 499 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-07-11 23:53:20,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 367. [2022-07-11 23:53:20,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.6174863387978142) internal successors, (592), 366 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 592 transitions. [2022-07-11 23:53:20,633 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 592 transitions. Word has length 112 [2022-07-11 23:53:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:20,633 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 592 transitions. [2022-07-11 23:53:20,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 592 transitions. [2022-07-11 23:53:20,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-11 23:53:20,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:20,635 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:20,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-11 23:53:20,635 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:20,636 INFO L85 PathProgramCache]: Analyzing trace with hash 738933916, now seen corresponding path program 1 times [2022-07-11 23:53:20,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:20,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976177431] [2022-07-11 23:53:20,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:20,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:20,724 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-11 23:53:20,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:20,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976177431] [2022-07-11 23:53:20,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976177431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:20,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:20,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:20,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208747162] [2022-07-11 23:53:20,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:20,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:20,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:20,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:20,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:20,727 INFO L87 Difference]: Start difference. First operand 367 states and 592 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:22,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:22,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:22,621 INFO L93 Difference]: Finished difference Result 720 states and 1169 transitions. [2022-07-11 23:53:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:22,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-07-11 23:53:22,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:22,623 INFO L225 Difference]: With dead ends: 720 [2022-07-11 23:53:22,623 INFO L226 Difference]: Without dead ends: 374 [2022-07-11 23:53:22,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:22,624 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 26 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:22,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 513 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-11 23:53:22,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-07-11 23:53:22,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 367. [2022-07-11 23:53:22,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 366 states have (on average 1.6147540983606556) internal successors, (591), 366 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:22,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 591 transitions. [2022-07-11 23:53:22,637 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 591 transitions. Word has length 113 [2022-07-11 23:53:22,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:22,637 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 591 transitions. [2022-07-11 23:53:22,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:22,638 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 591 transitions. [2022-07-11 23:53:22,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-11 23:53:22,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:22,639 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:22,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-11 23:53:22,639 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:22,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:22,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1910274857, now seen corresponding path program 1 times [2022-07-11 23:53:22,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:22,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509282331] [2022-07-11 23:53:22,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:22,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:53:22,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:22,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509282331] [2022-07-11 23:53:22,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509282331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:22,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:22,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:22,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192293621] [2022-07-11 23:53:22,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:22,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:22,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:22,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:22,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:22,762 INFO L87 Difference]: Start difference. First operand 367 states and 591 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:23,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:23,425 INFO L93 Difference]: Finished difference Result 806 states and 1298 transitions. [2022-07-11 23:53:23,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:23,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2022-07-11 23:53:23,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:23,428 INFO L225 Difference]: With dead ends: 806 [2022-07-11 23:53:23,428 INFO L226 Difference]: Without dead ends: 460 [2022-07-11 23:53:23,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:23,429 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 80 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:23,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 461 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:53:23,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-11 23:53:23,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 407. [2022-07-11 23:53:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 1.6206896551724137) internal successors, (658), 406 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 658 transitions. [2022-07-11 23:53:23,437 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 658 transitions. Word has length 118 [2022-07-11 23:53:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:23,437 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 658 transitions. [2022-07-11 23:53:23,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:23,438 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 658 transitions. [2022-07-11 23:53:23,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-11 23:53:23,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:23,439 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:23,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-11 23:53:23,439 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:23,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:23,440 INFO L85 PathProgramCache]: Analyzing trace with hash -176170407, now seen corresponding path program 1 times [2022-07-11 23:53:23,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:23,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054096954] [2022-07-11 23:53:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:23,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-11 23:53:23,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:23,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054096954] [2022-07-11 23:53:23,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054096954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:23,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:23,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:23,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903105569] [2022-07-11 23:53:23,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:23,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:23,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:23,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:23,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:23,569 INFO L87 Difference]: Start difference. First operand 407 states and 658 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) [2022-07-11 23:53:25,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:25,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:25,302 INFO L93 Difference]: Finished difference Result 840 states and 1361 transitions. [2022-07-11 23:53:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:25,302 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 118 [2022-07-11 23:53:25,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:25,304 INFO L225 Difference]: With dead ends: 840 [2022-07-11 23:53:25,304 INFO L226 Difference]: Without dead ends: 454 [2022-07-11 23:53:25,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:25,306 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 37 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:25,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 593 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-11 23:53:25,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-11 23:53:25,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 431. [2022-07-11 23:53:25,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.6209302325581396) internal successors, (697), 430 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 697 transitions. [2022-07-11 23:53:25,315 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 697 transitions. Word has length 118 [2022-07-11 23:53:25,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:25,315 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 697 transitions. [2022-07-11 23:53:25,315 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) [2022-07-11 23:53:25,315 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 697 transitions. [2022-07-11 23:53:25,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-11 23:53:25,316 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:25,317 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:25,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-11 23:53:25,317 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:25,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:25,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1637211528, now seen corresponding path program 1 times [2022-07-11 23:53:25,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:25,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949191965] [2022-07-11 23:53:25,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:25,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:25,423 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-11 23:53:25,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:25,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949191965] [2022-07-11 23:53:25,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949191965] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:25,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:25,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:25,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086405672] [2022-07-11 23:53:25,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:25,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:25,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:25,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:25,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:25,426 INFO L87 Difference]: Start difference. First operand 431 states and 697 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:26,449 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 [] [2022-07-11 23:53:26,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:26,715 INFO L93 Difference]: Finished difference Result 886 states and 1429 transitions. [2022-07-11 23:53:26,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:26,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-07-11 23:53:26,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:26,717 INFO L225 Difference]: With dead ends: 886 [2022-07-11 23:53:26,717 INFO L226 Difference]: Without dead ends: 476 [2022-07-11 23:53:26,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:26,718 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 64 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:26,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 467 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-11 23:53:26,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-07-11 23:53:26,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 434. [2022-07-11 23:53:26,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.6166281755196306) internal successors, (700), 433 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:26,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 700 transitions. [2022-07-11 23:53:26,726 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 700 transitions. Word has length 126 [2022-07-11 23:53:26,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:26,727 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 700 transitions. [2022-07-11 23:53:26,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:26,727 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 700 transitions. [2022-07-11 23:53:26,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-11 23:53:26,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:26,742 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:26,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-11 23:53:26,742 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:26,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:26,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1634053617, now seen corresponding path program 1 times [2022-07-11 23:53:26,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:26,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238090053] [2022-07-11 23:53:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:26,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:26,880 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:53:26,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:26,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238090053] [2022-07-11 23:53:26,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238090053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:26,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:26,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:26,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729430633] [2022-07-11 23:53:26,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:26,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:26,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:26,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:26,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:26,882 INFO L87 Difference]: Start difference. First operand 434 states and 700 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:27,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:27,479 INFO L93 Difference]: Finished difference Result 923 states and 1481 transitions. [2022-07-11 23:53:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:27,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 132 [2022-07-11 23:53:27,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:27,481 INFO L225 Difference]: With dead ends: 923 [2022-07-11 23:53:27,482 INFO L226 Difference]: Without dead ends: 510 [2022-07-11 23:53:27,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:27,483 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 146 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:27,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 332 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:53:27,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-07-11 23:53:27,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 434. [2022-07-11 23:53:27,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.5981524249422632) internal successors, (692), 433 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:27,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 692 transitions. [2022-07-11 23:53:27,492 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 692 transitions. Word has length 132 [2022-07-11 23:53:27,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:27,492 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 692 transitions. [2022-07-11 23:53:27,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 692 transitions. [2022-07-11 23:53:27,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-11 23:53:27,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:27,494 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:27,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-11 23:53:27,495 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:27,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:27,495 INFO L85 PathProgramCache]: Analyzing trace with hash -913986916, now seen corresponding path program 1 times [2022-07-11 23:53:27,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:27,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774506517] [2022-07-11 23:53:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:27,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:53:27,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:27,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774506517] [2022-07-11 23:53:27,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774506517] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:27,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:27,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:27,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737358537] [2022-07-11 23:53:27,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:27,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:27,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:27,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:27,610 INFO L87 Difference]: Start difference. First operand 434 states and 692 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:28,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:28,911 INFO L93 Difference]: Finished difference Result 922 states and 1464 transitions. [2022-07-11 23:53:28,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:28,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 132 [2022-07-11 23:53:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:28,914 INFO L225 Difference]: With dead ends: 922 [2022-07-11 23:53:28,914 INFO L226 Difference]: Without dead ends: 509 [2022-07-11 23:53:28,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:28,915 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 138 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:28,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 334 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-11 23:53:28,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-07-11 23:53:28,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 434. [2022-07-11 23:53:28,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.581986143187067) internal successors, (685), 433 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:28,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 685 transitions. [2022-07-11 23:53:28,924 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 685 transitions. Word has length 132 [2022-07-11 23:53:28,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:28,924 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 685 transitions. [2022-07-11 23:53:28,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:28,925 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 685 transitions. [2022-07-11 23:53:28,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-11 23:53:28,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:28,926 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:28,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-11 23:53:28,926 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:28,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:28,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1172457469, now seen corresponding path program 1 times [2022-07-11 23:53:28,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:28,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739400564] [2022-07-11 23:53:28,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:28,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-11 23:53:29,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:29,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739400564] [2022-07-11 23:53:29,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739400564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:29,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:29,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:53:29,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630809387] [2022-07-11 23:53:29,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:29,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:53:29,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:29,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:53:29,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:29,035 INFO L87 Difference]: Start difference. First operand 434 states and 685 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2022-07-11 23:53:30,053 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 [] [2022-07-11 23:53:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:30,711 INFO L93 Difference]: Finished difference Result 857 states and 1358 transitions. [2022-07-11 23:53:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:53:30,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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 133 [2022-07-11 23:53:30,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:30,713 INFO L225 Difference]: With dead ends: 857 [2022-07-11 23:53:30,713 INFO L226 Difference]: Without dead ends: 444 [2022-07-11 23:53:30,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:53:30,714 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 147 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:30,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 358 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-11 23:53:30,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-07-11 23:53:30,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 443. [2022-07-11 23:53:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5746606334841629) internal successors, (696), 442 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 696 transitions. [2022-07-11 23:53:30,723 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 696 transitions. Word has length 133 [2022-07-11 23:53:30,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:30,724 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 696 transitions. [2022-07-11 23:53:30,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 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) [2022-07-11 23:53:30,724 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 696 transitions. [2022-07-11 23:53:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-11 23:53:30,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:30,725 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:30,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-11 23:53:30,726 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:30,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:30,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1867863608, now seen corresponding path program 1 times [2022-07-11 23:53:30,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:30,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512799600] [2022-07-11 23:53:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:30,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:53:30,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:30,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512799600] [2022-07-11 23:53:30,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512799600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:30,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:30,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:30,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230305703] [2022-07-11 23:53:30,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:30,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:30,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:30,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:30,822 INFO L87 Difference]: Start difference. First operand 443 states and 696 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:31,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:31,404 INFO L93 Difference]: Finished difference Result 905 states and 1420 transitions. [2022-07-11 23:53:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:31,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 134 [2022-07-11 23:53:31,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:31,406 INFO L225 Difference]: With dead ends: 905 [2022-07-11 23:53:31,406 INFO L226 Difference]: Without dead ends: 483 [2022-07-11 23:53:31,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:31,407 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 89 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:31,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 497 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:53:31,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-07-11 23:53:31,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 443. [2022-07-11 23:53:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5723981900452488) internal successors, (695), 442 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 695 transitions. [2022-07-11 23:53:31,418 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 695 transitions. Word has length 134 [2022-07-11 23:53:31,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:31,418 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 695 transitions. [2022-07-11 23:53:31,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:31,418 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 695 transitions. [2022-07-11 23:53:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-11 23:53:31,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:31,420 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:31,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-11 23:53:31,420 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:31,421 INFO L85 PathProgramCache]: Analyzing trace with hash -72718406, now seen corresponding path program 1 times [2022-07-11 23:53:31,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:31,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910867601] [2022-07-11 23:53:31,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:31,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:53:31,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:31,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910867601] [2022-07-11 23:53:31,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910867601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:31,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:31,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:31,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567312744] [2022-07-11 23:53:31,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:31,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:31,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:31,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:31,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:31,557 INFO L87 Difference]: Start difference. First operand 443 states and 695 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:32,713 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 [] [2022-07-11 23:53:32,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:32,894 INFO L93 Difference]: Finished difference Result 886 states and 1392 transitions. [2022-07-11 23:53:32,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:32,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 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 134 [2022-07-11 23:53:32,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:32,896 INFO L225 Difference]: With dead ends: 886 [2022-07-11 23:53:32,896 INFO L226 Difference]: Without dead ends: 464 [2022-07-11 23:53:32,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:32,898 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 45 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:32,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 589 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-11 23:53:32,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-07-11 23:53:32,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 443. [2022-07-11 23:53:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5701357466063348) internal successors, (694), 442 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 694 transitions. [2022-07-11 23:53:32,907 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 694 transitions. Word has length 134 [2022-07-11 23:53:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:32,908 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 694 transitions. [2022-07-11 23:53:32,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 694 transitions. [2022-07-11 23:53:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-11 23:53:32,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:32,909 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:32,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-11 23:53:32,910 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:32,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:32,910 INFO L85 PathProgramCache]: Analyzing trace with hash 199889873, now seen corresponding path program 1 times [2022-07-11 23:53:32,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:32,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163944633] [2022-07-11 23:53:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:32,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:32,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:53:33,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:33,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163944633] [2022-07-11 23:53:33,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163944633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:33,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:33,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28042866] [2022-07-11 23:53:33,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:33,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:33,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:33,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:33,014 INFO L87 Difference]: Start difference. First operand 443 states and 694 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:33,532 INFO L93 Difference]: Finished difference Result 940 states and 1467 transitions. [2022-07-11 23:53:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:33,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-07-11 23:53:33,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:33,535 INFO L225 Difference]: With dead ends: 940 [2022-07-11 23:53:33,535 INFO L226 Difference]: Without dead ends: 518 [2022-07-11 23:53:33,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:33,536 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 141 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:33,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 342 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:33,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-07-11 23:53:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 443. [2022-07-11 23:53:33,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5520361990950227) internal successors, (686), 442 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:33,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 686 transitions. [2022-07-11 23:53:33,546 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 686 transitions. Word has length 135 [2022-07-11 23:53:33,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:33,546 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 686 transitions. [2022-07-11 23:53:33,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:33,547 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 686 transitions. [2022-07-11 23:53:33,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-11 23:53:33,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:33,548 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:33,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-11 23:53:33,549 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:33,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash -345760781, now seen corresponding path program 1 times [2022-07-11 23:53:33,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:33,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696563845] [2022-07-11 23:53:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:33,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:53:33,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:33,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696563845] [2022-07-11 23:53:33,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696563845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:33,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:33,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:33,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234551771] [2022-07-11 23:53:33,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:33,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:33,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:33,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:33,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:33,655 INFO L87 Difference]: Start difference. First operand 443 states and 686 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) [2022-07-11 23:53:34,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:34,876 INFO L93 Difference]: Finished difference Result 940 states and 1451 transitions. [2022-07-11 23:53:34,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:34,876 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 136 [2022-07-11 23:53:34,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:34,877 INFO L225 Difference]: With dead ends: 940 [2022-07-11 23:53:34,878 INFO L226 Difference]: Without dead ends: 518 [2022-07-11 23:53:34,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:34,879 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 139 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:34,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 362 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:53:34,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-07-11 23:53:34,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 443. [2022-07-11 23:53:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 1.5339366515837105) internal successors, (678), 442 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 678 transitions. [2022-07-11 23:53:34,888 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 678 transitions. Word has length 136 [2022-07-11 23:53:34,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:34,889 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 678 transitions. [2022-07-11 23:53:34,889 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) [2022-07-11 23:53:34,889 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 678 transitions. [2022-07-11 23:53:34,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-11 23:53:34,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:34,890 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:34,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-11 23:53:34,891 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:34,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:34,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1446475781, now seen corresponding path program 1 times [2022-07-11 23:53:34,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:34,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420457839] [2022-07-11 23:53:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:34,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:53:35,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:35,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420457839] [2022-07-11 23:53:35,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420457839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:35,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:35,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:35,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118226851] [2022-07-11 23:53:35,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:35,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:35,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:35,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:35,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:35,006 INFO L87 Difference]: Start difference. First operand 443 states and 678 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:35,551 INFO L93 Difference]: Finished difference Result 980 states and 1499 transitions. [2022-07-11 23:53:35,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:35,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-07-11 23:53:35,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:35,553 INFO L225 Difference]: With dead ends: 980 [2022-07-11 23:53:35,553 INFO L226 Difference]: Without dead ends: 558 [2022-07-11 23:53:35,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:35,554 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 123 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:35,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 342 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:35,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-07-11 23:53:35,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 473. [2022-07-11 23:53:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5254237288135593) internal successors, (720), 472 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 720 transitions. [2022-07-11 23:53:35,564 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 720 transitions. Word has length 139 [2022-07-11 23:53:35,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:35,564 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 720 transitions. [2022-07-11 23:53:35,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:35,565 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 720 transitions. [2022-07-11 23:53:35,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-11 23:53:35,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:35,566 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:35,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-11 23:53:35,566 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:35,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:35,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1736063103, now seen corresponding path program 1 times [2022-07-11 23:53:35,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:35,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146085697] [2022-07-11 23:53:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:35,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:35,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-11 23:53:35,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:35,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146085697] [2022-07-11 23:53:35,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146085697] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:35,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:35,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:35,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142485657] [2022-07-11 23:53:35,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:35,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:35,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:35,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:35,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:35,670 INFO L87 Difference]: Start difference. First operand 473 states and 720 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:36,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:37,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:37,057 INFO L93 Difference]: Finished difference Result 955 states and 1456 transitions. [2022-07-11 23:53:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:37,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-11 23:53:37,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:37,059 INFO L225 Difference]: With dead ends: 955 [2022-07-11 23:53:37,059 INFO L226 Difference]: Without dead ends: 503 [2022-07-11 23:53:37,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:37,060 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 67 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:37,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 497 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-11 23:53:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-07-11 23:53:37,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 473. [2022-07-11 23:53:37,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5233050847457628) internal successors, (719), 472 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:37,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 719 transitions. [2022-07-11 23:53:37,071 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 719 transitions. Word has length 140 [2022-07-11 23:53:37,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:37,071 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 719 transitions. [2022-07-11 23:53:37,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:37,071 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 719 transitions. [2022-07-11 23:53:37,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-11 23:53:37,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:37,073 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:37,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-11 23:53:37,073 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:37,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:37,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1295902169, now seen corresponding path program 1 times [2022-07-11 23:53:37,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:37,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284445033] [2022-07-11 23:53:37,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:37,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:53:37,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:37,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284445033] [2022-07-11 23:53:37,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284445033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:37,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:37,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:37,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095813083] [2022-07-11 23:53:37,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:37,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:37,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:37,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:37,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:37,198 INFO L87 Difference]: Start difference. First operand 473 states and 719 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:37,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:37,735 INFO L93 Difference]: Finished difference Result 953 states and 1452 transitions. [2022-07-11 23:53:37,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:37,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-11 23:53:37,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:37,738 INFO L225 Difference]: With dead ends: 953 [2022-07-11 23:53:37,738 INFO L226 Difference]: Without dead ends: 501 [2022-07-11 23:53:37,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:37,739 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 58 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:37,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 499 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-07-11 23:53:37,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 473. [2022-07-11 23:53:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.521186440677966) internal successors, (718), 472 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:37,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 718 transitions. [2022-07-11 23:53:37,749 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 718 transitions. Word has length 140 [2022-07-11 23:53:37,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:37,749 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 718 transitions. [2022-07-11 23:53:37,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:37,750 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 718 transitions. [2022-07-11 23:53:37,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-11 23:53:37,751 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:37,751 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:37,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-11 23:53:37,751 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:37,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:37,752 INFO L85 PathProgramCache]: Analyzing trace with hash -957833087, now seen corresponding path program 1 times [2022-07-11 23:53:37,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:37,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505224482] [2022-07-11 23:53:37,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:37,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-11 23:53:37,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:37,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505224482] [2022-07-11 23:53:37,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505224482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:37,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:37,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:37,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799936131] [2022-07-11 23:53:37,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:37,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:37,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:37,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:37,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:37,852 INFO L87 Difference]: Start difference. First operand 473 states and 718 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:38,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:38,427 INFO L93 Difference]: Finished difference Result 1000 states and 1515 transitions. [2022-07-11 23:53:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:38,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-11 23:53:38,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:38,429 INFO L225 Difference]: With dead ends: 1000 [2022-07-11 23:53:38,429 INFO L226 Difference]: Without dead ends: 548 [2022-07-11 23:53:38,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:38,430 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 115 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:38,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 362 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:53:38,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2022-07-11 23:53:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 473. [2022-07-11 23:53:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.5169491525423728) internal successors, (716), 472 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 716 transitions. [2022-07-11 23:53:38,459 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 716 transitions. Word has length 140 [2022-07-11 23:53:38,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:38,459 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 716 transitions. [2022-07-11 23:53:38,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:38,460 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 716 transitions. [2022-07-11 23:53:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-11 23:53:38,461 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:38,461 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:38,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-11 23:53:38,462 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:38,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:38,462 INFO L85 PathProgramCache]: Analyzing trace with hash -249014880, now seen corresponding path program 1 times [2022-07-11 23:53:38,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:38,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369586882] [2022-07-11 23:53:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:38,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:53:38,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:38,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369586882] [2022-07-11 23:53:38,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369586882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:38,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:38,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:38,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608638459] [2022-07-11 23:53:38,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:38,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:38,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:38,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:38,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:38,578 INFO L87 Difference]: Start difference. First operand 473 states and 716 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:39,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:39,180 INFO L93 Difference]: Finished difference Result 1040 states and 1573 transitions. [2022-07-11 23:53:39,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:39,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-07-11 23:53:39,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:39,182 INFO L225 Difference]: With dead ends: 1040 [2022-07-11 23:53:39,182 INFO L226 Difference]: Without dead ends: 588 [2022-07-11 23:53:39,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:39,183 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 124 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:39,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 362 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:53:39,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-07-11 23:53:39,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 501. [2022-07-11 23:53:39,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.506) internal successors, (753), 500 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 753 transitions. [2022-07-11 23:53:39,195 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 753 transitions. Word has length 142 [2022-07-11 23:53:39,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:39,195 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 753 transitions. [2022-07-11 23:53:39,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 753 transitions. [2022-07-11 23:53:39,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-11 23:53:39,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:39,197 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:39,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-11 23:53:39,198 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:39,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:39,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1298036834, now seen corresponding path program 1 times [2022-07-11 23:53:39,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:39,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019425506] [2022-07-11 23:53:39,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:39,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:39,321 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-11 23:53:39,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:39,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019425506] [2022-07-11 23:53:39,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019425506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:39,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:39,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:39,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089693123] [2022-07-11 23:53:39,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:39,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:39,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:39,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:39,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:39,324 INFO L87 Difference]: Start difference. First operand 501 states and 753 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:39,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:39,956 INFO L93 Difference]: Finished difference Result 1056 states and 1585 transitions. [2022-07-11 23:53:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:39,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2022-07-11 23:53:39,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:39,958 INFO L225 Difference]: With dead ends: 1056 [2022-07-11 23:53:39,958 INFO L226 Difference]: Without dead ends: 576 [2022-07-11 23:53:39,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:39,959 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 123 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:39,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 342 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-11 23:53:39,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-07-11 23:53:39,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 501. [2022-07-11 23:53:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.492) internal successors, (746), 500 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:39,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 746 transitions. [2022-07-11 23:53:39,971 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 746 transitions. Word has length 143 [2022-07-11 23:53:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:39,972 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 746 transitions. [2022-07-11 23:53:39,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:39,972 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 746 transitions. [2022-07-11 23:53:39,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-11 23:53:39,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:39,973 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:39,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-11 23:53:39,974 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:39,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:39,974 INFO L85 PathProgramCache]: Analyzing trace with hash -279579614, now seen corresponding path program 1 times [2022-07-11 23:53:39,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:39,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059995771] [2022-07-11 23:53:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:39,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-11 23:53:40,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:40,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059995771] [2022-07-11 23:53:40,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059995771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:40,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:40,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:53:40,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616284766] [2022-07-11 23:53:40,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:40,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:53:40,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:40,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:53:40,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:40,083 INFO L87 Difference]: Start difference. First operand 501 states and 746 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:40,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:40,126 INFO L93 Difference]: Finished difference Result 1453 states and 2177 transitions. [2022-07-11 23:53:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:53:40,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 148 [2022-07-11 23:53:40,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:40,129 INFO L225 Difference]: With dead ends: 1453 [2022-07-11 23:53:40,129 INFO L226 Difference]: Without dead ends: 973 [2022-07-11 23:53:40,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:40,131 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 131 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:40,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 435 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:53:40,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-07-11 23:53:40,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2022-07-11 23:53:40,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.4917525773195877) internal successors, (1447), 970 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1447 transitions. [2022-07-11 23:53:40,151 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1447 transitions. Word has length 148 [2022-07-11 23:53:40,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:40,152 INFO L495 AbstractCegarLoop]: Abstraction has 971 states and 1447 transitions. [2022-07-11 23:53:40,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:40,152 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1447 transitions. [2022-07-11 23:53:40,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-11 23:53:40,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:40,154 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:40,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-11 23:53:40,155 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:40,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:40,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1873527204, now seen corresponding path program 1 times [2022-07-11 23:53:40,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:40,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304210062] [2022-07-11 23:53:40,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:40,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-11 23:53:40,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:40,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304210062] [2022-07-11 23:53:40,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304210062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:40,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:40,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:53:40,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101896503] [2022-07-11 23:53:40,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:40,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:53:40,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:40,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:53:40,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:40,267 INFO L87 Difference]: Start difference. First operand 971 states and 1447 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:40,306 INFO L93 Difference]: Finished difference Result 1948 states and 2906 transitions. [2022-07-11 23:53:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:53:40,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-07-11 23:53:40,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:40,309 INFO L225 Difference]: With dead ends: 1948 [2022-07-11 23:53:40,310 INFO L226 Difference]: Without dead ends: 998 [2022-07-11 23:53:40,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:40,311 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 [2022-07-11 23:53:40,312 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] [2022-07-11 23:53:40,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2022-07-11 23:53:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 998. [2022-07-11 23:53:40,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 997 states have (on average 1.4864593781344033) internal successors, (1482), 997 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:40,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1482 transitions. [2022-07-11 23:53:40,338 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1482 transitions. Word has length 148 [2022-07-11 23:53:40,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:40,339 INFO L495 AbstractCegarLoop]: Abstraction has 998 states and 1482 transitions. [2022-07-11 23:53:40,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:40,339 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1482 transitions. [2022-07-11 23:53:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-11 23:53:40,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:40,341 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:40,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-11 23:53:40,342 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:40,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:40,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1439021606, now seen corresponding path program 1 times [2022-07-11 23:53:40,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:40,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329034055] [2022-07-11 23:53:40,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:40,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:40,427 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-11 23:53:40,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:40,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329034055] [2022-07-11 23:53:40,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329034055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:40,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:40,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:53:40,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416210150] [2022-07-11 23:53:40,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:40,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:53:40,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:40,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:53:40,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:40,429 INFO L87 Difference]: Start difference. First operand 998 states and 1482 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:40,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:40,464 INFO L93 Difference]: Finished difference Result 1977 states and 2942 transitions. [2022-07-11 23:53:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:53:40,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2022-07-11 23:53:40,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:40,467 INFO L225 Difference]: With dead ends: 1977 [2022-07-11 23:53:40,468 INFO L226 Difference]: Without dead ends: 1000 [2022-07-11 23:53:40,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:40,469 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 [2022-07-11 23:53:40,469 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] [2022-07-11 23:53:40,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2022-07-11 23:53:40,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 1000. [2022-07-11 23:53:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 999 states have (on average 1.4854854854854855) internal successors, (1484), 999 states have internal predecessors, (1484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:40,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1484 transitions. [2022-07-11 23:53:40,494 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1484 transitions. Word has length 148 [2022-07-11 23:53:40,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:40,494 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1484 transitions. [2022-07-11 23:53:40,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:40,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1484 transitions. [2022-07-11 23:53:40,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-11 23:53:40,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:40,497 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:40,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-11 23:53:40,497 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:40,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1628965976, now seen corresponding path program 1 times [2022-07-11 23:53:40,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:40,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72197559] [2022-07-11 23:53:40,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:40,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-11 23:53:40,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:40,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72197559] [2022-07-11 23:53:40,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72197559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:40,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:40,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:40,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404880030] [2022-07-11 23:53:40,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:40,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:40,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:40,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:40,607 INFO L87 Difference]: Start difference. First operand 1000 states and 1484 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:41,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:41,622 INFO L93 Difference]: Finished difference Result 2018 states and 2992 transitions. [2022-07-11 23:53:41,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:41,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2022-07-11 23:53:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:41,626 INFO L225 Difference]: With dead ends: 2018 [2022-07-11 23:53:41,626 INFO L226 Difference]: Without dead ends: 1041 [2022-07-11 23:53:41,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:41,628 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 42 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:41,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 515 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-11 23:53:41,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-07-11 23:53:41,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1000. [2022-07-11 23:53:41,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 999 states have (on average 1.4834834834834836) internal successors, (1482), 999 states have internal predecessors, (1482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:41,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1482 transitions. [2022-07-11 23:53:41,650 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1482 transitions. Word has length 149 [2022-07-11 23:53:41,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:41,650 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1482 transitions. [2022-07-11 23:53:41,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:41,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1482 transitions. [2022-07-11 23:53:41,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-11 23:53:41,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:41,653 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:41,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-11 23:53:41,653 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:41,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:41,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1974067073, now seen corresponding path program 1 times [2022-07-11 23:53:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:41,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245250718] [2022-07-11 23:53:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:41,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:41,778 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-11 23:53:41,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:41,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245250718] [2022-07-11 23:53:41,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245250718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:41,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:41,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:41,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600137351] [2022-07-11 23:53:41,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:41,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:41,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:41,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:41,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:41,780 INFO L87 Difference]: Start difference. First operand 1000 states and 1482 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:42,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:42,519 INFO L93 Difference]: Finished difference Result 2124 states and 3135 transitions. [2022-07-11 23:53:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:42,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-07-11 23:53:42,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:42,527 INFO L225 Difference]: With dead ends: 2124 [2022-07-11 23:53:42,527 INFO L226 Difference]: Without dead ends: 1147 [2022-07-11 23:53:42,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:42,528 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 115 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:42,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 342 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-11 23:53:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-07-11 23:53:42,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1000. [2022-07-11 23:53:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 999 states have (on average 1.4754754754754755) internal successors, (1474), 999 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:42,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1474 transitions. [2022-07-11 23:53:42,551 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1474 transitions. Word has length 150 [2022-07-11 23:53:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:42,551 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1474 transitions. [2022-07-11 23:53:42,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:42,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1474 transitions. [2022-07-11 23:53:42,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-11 23:53:42,553 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:42,553 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-11 23:53:42,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-11 23:53:42,554 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:42,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:42,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2131671941, now seen corresponding path program 1 times [2022-07-11 23:53:42,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:42,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127236940] [2022-07-11 23:53:42,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:42,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:42,667 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-11 23:53:42,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:42,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127236940] [2022-07-11 23:53:42,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127236940] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:42,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:42,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:53:42,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805489206] [2022-07-11 23:53:42,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:42,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:53:42,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:42,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:53:42,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:42,669 INFO L87 Difference]: Start difference. First operand 1000 states and 1474 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:43,812 INFO L93 Difference]: Finished difference Result 2575 states and 3791 transitions. [2022-07-11 23:53:43,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:53:43,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-07-11 23:53:43,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:43,816 INFO L225 Difference]: With dead ends: 2575 [2022-07-11 23:53:43,816 INFO L226 Difference]: Without dead ends: 1598 [2022-07-11 23:53:43,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:53:43,818 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 88 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:43,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 774 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-11 23:53:43,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2022-07-11 23:53:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1558. [2022-07-11 23:53:43,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1557 states have (on average 1.4752729608220938) internal successors, (2297), 1557 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:43,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2297 transitions. [2022-07-11 23:53:43,853 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2297 transitions. Word has length 150 [2022-07-11 23:53:43,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:43,853 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 2297 transitions. [2022-07-11 23:53:43,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:43,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2297 transitions. [2022-07-11 23:53:43,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-11 23:53:43,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:43,856 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:43,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-11 23:53:43,856 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:43,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:43,857 INFO L85 PathProgramCache]: Analyzing trace with hash -854769225, now seen corresponding path program 1 times [2022-07-11 23:53:43,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:43,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933981035] [2022-07-11 23:53:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:43,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-11 23:53:43,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:43,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933981035] [2022-07-11 23:53:43,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933981035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:43,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:43,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:43,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409525899] [2022-07-11 23:53:43,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:43,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:43,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:43,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:43,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:43,956 INFO L87 Difference]: Start difference. First operand 1558 states and 2297 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:44,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:44,508 INFO L93 Difference]: Finished difference Result 3138 states and 4624 transitions. [2022-07-11 23:53:44,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:44,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-07-11 23:53:44,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:44,516 INFO L225 Difference]: With dead ends: 3138 [2022-07-11 23:53:44,516 INFO L226 Difference]: Without dead ends: 1603 [2022-07-11 23:53:44,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:44,518 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 45 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:44,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 511 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:44,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2022-07-11 23:53:44,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1558. [2022-07-11 23:53:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1557 states have (on average 1.4733461785484907) internal successors, (2294), 1557 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:44,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2294 transitions. [2022-07-11 23:53:44,553 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2294 transitions. Word has length 151 [2022-07-11 23:53:44,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:44,554 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 2294 transitions. [2022-07-11 23:53:44,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:44,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2294 transitions. [2022-07-11 23:53:44,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-11 23:53:44,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:44,556 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:44,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-11 23:53:44,557 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:44,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:44,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1018882254, now seen corresponding path program 1 times [2022-07-11 23:53:44,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:44,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608915505] [2022-07-11 23:53:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:44,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:44,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-11 23:53:44,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:44,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608915505] [2022-07-11 23:53:44,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608915505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:44,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:44,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:44,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339556710] [2022-07-11 23:53:44,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:44,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:44,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:44,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:44,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:44,664 INFO L87 Difference]: Start difference. First operand 1558 states and 2294 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:45,525 INFO L93 Difference]: Finished difference Result 3479 states and 5105 transitions. [2022-07-11 23:53:45,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:45,526 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 156 [2022-07-11 23:53:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:45,531 INFO L225 Difference]: With dead ends: 3479 [2022-07-11 23:53:45,531 INFO L226 Difference]: Without dead ends: 1944 [2022-07-11 23:53:45,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:45,533 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 124 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:45,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 404 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-11 23:53:45,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2022-07-11 23:53:45,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1662. [2022-07-11 23:53:45,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 1.461167971101746) internal successors, (2427), 1661 states have internal predecessors, (2427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2427 transitions. [2022-07-11 23:53:45,561 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2427 transitions. Word has length 156 [2022-07-11 23:53:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:45,561 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2427 transitions. [2022-07-11 23:53:45,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2427 transitions. [2022-07-11 23:53:45,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-11 23:53:45,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:45,563 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:45,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-11 23:53:45,563 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:45,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:45,563 INFO L85 PathProgramCache]: Analyzing trace with hash -123558484, now seen corresponding path program 1 times [2022-07-11 23:53:45,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:45,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322369937] [2022-07-11 23:53:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:45,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:45,658 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-11 23:53:45,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:45,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322369937] [2022-07-11 23:53:45,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322369937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:45,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:45,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:45,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822965254] [2022-07-11 23:53:45,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:45,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:45,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:45,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:45,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:45,661 INFO L87 Difference]: Start difference. First operand 1662 states and 2427 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:46,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:46,215 INFO L93 Difference]: Finished difference Result 3340 states and 4875 transitions. [2022-07-11 23:53:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:46,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2022-07-11 23:53:46,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:46,223 INFO L225 Difference]: With dead ends: 3340 [2022-07-11 23:53:46,223 INFO L226 Difference]: Without dead ends: 1701 [2022-07-11 23:53:46,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:46,226 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 40 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:46,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 517 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:46,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2022-07-11 23:53:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1662. [2022-07-11 23:53:46,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 1.4593618302227573) internal successors, (2424), 1661 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2424 transitions. [2022-07-11 23:53:46,269 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2424 transitions. Word has length 157 [2022-07-11 23:53:46,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:46,269 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2424 transitions. [2022-07-11 23:53:46,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2424 transitions. [2022-07-11 23:53:46,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-11 23:53:46,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:46,272 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2022-07-11 23:53:46,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-11 23:53:46,272 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:46,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:46,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1634604496, now seen corresponding path program 1 times [2022-07-11 23:53:46,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:46,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378256272] [2022-07-11 23:53:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:46,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:46,373 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-11 23:53:46,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:46,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378256272] [2022-07-11 23:53:46,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378256272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:46,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:46,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:46,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307508845] [2022-07-11 23:53:46,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:46,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:46,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:46,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:46,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:46,376 INFO L87 Difference]: Start difference. First operand 1662 states and 2424 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:47,212 INFO L93 Difference]: Finished difference Result 3340 states and 4869 transitions. [2022-07-11 23:53:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:47,213 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-07-11 23:53:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:47,215 INFO L225 Difference]: With dead ends: 3340 [2022-07-11 23:53:47,216 INFO L226 Difference]: Without dead ends: 1701 [2022-07-11 23:53:47,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:47,218 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 33 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:47,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 517 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-11 23:53:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2022-07-11 23:53:47,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1662. [2022-07-11 23:53:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1661 states have (on average 1.457555689343769) internal successors, (2421), 1661 states have internal predecessors, (2421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2421 transitions. [2022-07-11 23:53:47,259 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2421 transitions. Word has length 159 [2022-07-11 23:53:47,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:47,259 INFO L495 AbstractCegarLoop]: Abstraction has 1662 states and 2421 transitions. [2022-07-11 23:53:47,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2421 transitions. [2022-07-11 23:53:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-11 23:53:47,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:47,260 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-07-11 23:53:47,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-11 23:53:47,261 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:47,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:47,261 INFO L85 PathProgramCache]: Analyzing trace with hash 775287959, now seen corresponding path program 1 times [2022-07-11 23:53:47,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:47,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37004101] [2022-07-11 23:53:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:47,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:47,354 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-11 23:53:47,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:47,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37004101] [2022-07-11 23:53:47,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37004101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:47,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:47,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:47,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25873384] [2022-07-11 23:53:47,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:47,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:47,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:47,356 INFO L87 Difference]: Start difference. First operand 1662 states and 2421 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:48,996 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:49,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:49,212 INFO L93 Difference]: Finished difference Result 3328 states and 4848 transitions. [2022-07-11 23:53:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:49,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2022-07-11 23:53:49,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:49,219 INFO L225 Difference]: With dead ends: 3328 [2022-07-11 23:53:49,219 INFO L226 Difference]: Without dead ends: 1689 [2022-07-11 23:53:49,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:49,221 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 28 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:49,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 521 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-11 23:53:49,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2022-07-11 23:53:49,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1651. [2022-07-11 23:53:49,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.4587878787878787) internal successors, (2407), 1650 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:49,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2407 transitions. [2022-07-11 23:53:49,258 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2407 transitions. Word has length 160 [2022-07-11 23:53:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:49,258 INFO L495 AbstractCegarLoop]: Abstraction has 1651 states and 2407 transitions. [2022-07-11 23:53:49,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2407 transitions. [2022-07-11 23:53:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-11 23:53:49,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:49,273 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:49,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-11 23:53:49,274 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:49,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:49,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1507899985, now seen corresponding path program 1 times [2022-07-11 23:53:49,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:49,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171395386] [2022-07-11 23:53:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:49,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-11 23:53:49,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:49,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171395386] [2022-07-11 23:53:49,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171395386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:49,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:49,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:49,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670952858] [2022-07-11 23:53:49,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:49,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:49,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:49,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:49,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:49,385 INFO L87 Difference]: Start difference. First operand 1651 states and 2407 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:49,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:49,944 INFO L93 Difference]: Finished difference Result 3353 states and 4879 transitions. [2022-07-11 23:53:49,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:49,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2022-07-11 23:53:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:49,947 INFO L225 Difference]: With dead ends: 3353 [2022-07-11 23:53:49,947 INFO L226 Difference]: Without dead ends: 1725 [2022-07-11 23:53:49,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:49,949 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 36 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:49,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 554 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:49,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2022-07-11 23:53:49,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1651. [2022-07-11 23:53:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.4563636363636363) internal successors, (2403), 1650 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2403 transitions. [2022-07-11 23:53:49,986 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2403 transitions. Word has length 162 [2022-07-11 23:53:49,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:49,987 INFO L495 AbstractCegarLoop]: Abstraction has 1651 states and 2403 transitions. [2022-07-11 23:53:49,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:49,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2403 transitions. [2022-07-11 23:53:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-11 23:53:49,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:49,988 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:49,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-11 23:53:49,989 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:49,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:49,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1834613916, now seen corresponding path program 1 times [2022-07-11 23:53:49,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:49,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535917430] [2022-07-11 23:53:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:49,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:50,106 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-11 23:53:50,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:50,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535917430] [2022-07-11 23:53:50,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535917430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:50,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:50,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:50,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116166893] [2022-07-11 23:53:50,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:50,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:50,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:50,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:50,108 INFO L87 Difference]: Start difference. First operand 1651 states and 2403 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:51,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:51,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:51,402 INFO L93 Difference]: Finished difference Result 3333 states and 4847 transitions. [2022-07-11 23:53:51,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:51,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2022-07-11 23:53:51,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:51,404 INFO L225 Difference]: With dead ends: 3333 [2022-07-11 23:53:51,404 INFO L226 Difference]: Without dead ends: 1705 [2022-07-11 23:53:51,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:51,406 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 41 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:51,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 567 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-11 23:53:51,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2022-07-11 23:53:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1651. [2022-07-11 23:53:51,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.4539393939393939) internal successors, (2399), 1650 states have internal predecessors, (2399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2399 transitions. [2022-07-11 23:53:51,434 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2399 transitions. Word has length 166 [2022-07-11 23:53:51,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:51,434 INFO L495 AbstractCegarLoop]: Abstraction has 1651 states and 2399 transitions. [2022-07-11 23:53:51,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:51,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2399 transitions. [2022-07-11 23:53:51,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-11 23:53:51,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:51,436 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] [2022-07-11 23:53:51,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-11 23:53:51,438 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:51,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:51,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1770149235, now seen corresponding path program 1 times [2022-07-11 23:53:51,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:51,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869200272] [2022-07-11 23:53:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:51,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-11 23:53:51,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:51,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869200272] [2022-07-11 23:53:51,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869200272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:51,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:51,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:53:51,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170127175] [2022-07-11 23:53:51,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:51,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:53:51,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:51,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:53:51,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:51,540 INFO L87 Difference]: Start difference. First operand 1651 states and 2399 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) [2022-07-11 23:53:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:51,625 INFO L93 Difference]: Finished difference Result 4051 states and 5908 transitions. [2022-07-11 23:53:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:53:51,626 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 [2022-07-11 23:53:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:51,630 INFO L225 Difference]: With dead ends: 4051 [2022-07-11 23:53:51,630 INFO L226 Difference]: Without dead ends: 2423 [2022-07-11 23:53:51,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:51,632 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 141 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:51,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 563 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:53:51,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2423 states. [2022-07-11 23:53:51,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2423 to 2423. [2022-07-11 23:53:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2422 states have (on average 1.453757225433526) internal successors, (3521), 2422 states have internal predecessors, (3521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3521 transitions. [2022-07-11 23:53:51,674 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3521 transitions. Word has length 167 [2022-07-11 23:53:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:51,674 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 3521 transitions. [2022-07-11 23:53:51,674 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) [2022-07-11 23:53:51,674 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3521 transitions. [2022-07-11 23:53:51,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-11 23:53:51,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:51,676 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:51,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-11 23:53:51,676 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:51,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1609317893, now seen corresponding path program 1 times [2022-07-11 23:53:51,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:51,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498092602] [2022-07-11 23:53:51,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:51,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:51,770 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-11 23:53:51,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:51,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498092602] [2022-07-11 23:53:51,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498092602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:51,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:51,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 23:53:51,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139116822] [2022-07-11 23:53:51,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:51,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 23:53:51,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:51,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 23:53:51,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:51,772 INFO L87 Difference]: Start difference. First operand 2423 states and 3521 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 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) [2022-07-11 23:53:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:51,856 INFO L93 Difference]: Finished difference Result 5557 states and 8094 transitions. [2022-07-11 23:53:51,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 23:53:51,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 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 168 [2022-07-11 23:53:51,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:51,862 INFO L225 Difference]: With dead ends: 5557 [2022-07-11 23:53:51,862 INFO L226 Difference]: Without dead ends: 3157 [2022-07-11 23:53:51,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 23:53:51,864 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 134 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:51,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 503 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:53:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2022-07-11 23:53:51,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3149. [2022-07-11 23:53:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3149 states, 3148 states have (on average 1.454891994917408) internal successors, (4580), 3148 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:51,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3149 states to 3149 states and 4580 transitions. [2022-07-11 23:53:51,928 INFO L78 Accepts]: Start accepts. Automaton has 3149 states and 4580 transitions. Word has length 168 [2022-07-11 23:53:51,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:51,929 INFO L495 AbstractCegarLoop]: Abstraction has 3149 states and 4580 transitions. [2022-07-11 23:53:51,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 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) [2022-07-11 23:53:51,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3149 states and 4580 transitions. [2022-07-11 23:53:51,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-11 23:53:51,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:51,932 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-11 23:53:51,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-07-11 23:53:51,932 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:51,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:51,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1316484344, now seen corresponding path program 1 times [2022-07-11 23:53:51,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:51,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409176100] [2022-07-11 23:53:51,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:51,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-11 23:53:52,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:52,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409176100] [2022-07-11 23:53:52,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409176100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:52,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:52,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:52,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559130204] [2022-07-11 23:53:52,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:52,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:52,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:52,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:52,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:52,052 INFO L87 Difference]: Start difference. First operand 3149 states and 4580 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:52,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:52,666 INFO L93 Difference]: Finished difference Result 6677 states and 9684 transitions. [2022-07-11 23:53:52,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:52,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 178 [2022-07-11 23:53:52,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:52,672 INFO L225 Difference]: With dead ends: 6677 [2022-07-11 23:53:52,672 INFO L226 Difference]: Without dead ends: 3551 [2022-07-11 23:53:52,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:52,676 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 106 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:52,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 411 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 23:53:52,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3551 states. [2022-07-11 23:53:52,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3551 to 3281. [2022-07-11 23:53:52,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3280 states have (on average 1.454268292682927) internal successors, (4770), 3280 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:52,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4770 transitions. [2022-07-11 23:53:52,755 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4770 transitions. Word has length 178 [2022-07-11 23:53:52,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:52,756 INFO L495 AbstractCegarLoop]: Abstraction has 3281 states and 4770 transitions. [2022-07-11 23:53:52,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:52,756 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4770 transitions. [2022-07-11 23:53:52,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-11 23:53:52,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:52,759 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:52,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-07-11 23:53:52,760 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:52,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:52,761 INFO L85 PathProgramCache]: Analyzing trace with hash -778688125, now seen corresponding path program 1 times [2022-07-11 23:53:52,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:52,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422167251] [2022-07-11 23:53:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-11 23:53:52,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:52,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422167251] [2022-07-11 23:53:52,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422167251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:52,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:52,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:52,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822897649] [2022-07-11 23:53:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:52,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:52,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:52,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:52,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:52,878 INFO L87 Difference]: Start difference. First operand 3281 states and 4770 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:54,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:54,629 INFO L93 Difference]: Finished difference Result 6717 states and 9743 transitions. [2022-07-11 23:53:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:54,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 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 179 [2022-07-11 23:53:54,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:54,635 INFO L225 Difference]: With dead ends: 6717 [2022-07-11 23:53:54,636 INFO L226 Difference]: Without dead ends: 3459 [2022-07-11 23:53:54,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:54,640 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 46 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:54,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 572 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-11 23:53:54,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3459 states. [2022-07-11 23:53:54,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3459 to 3281. [2022-07-11 23:53:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3280 states have (on average 1.451829268292683) internal successors, (4762), 3280 states have internal predecessors, (4762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:54,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4762 transitions. [2022-07-11 23:53:54,720 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4762 transitions. Word has length 179 [2022-07-11 23:53:54,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:54,720 INFO L495 AbstractCegarLoop]: Abstraction has 3281 states and 4762 transitions. [2022-07-11 23:53:54,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:54,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4762 transitions. [2022-07-11 23:53:54,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-11 23:53:54,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:54,724 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, 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] [2022-07-11 23:53:54,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-07-11 23:53:54,724 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:54,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:54,725 INFO L85 PathProgramCache]: Analyzing trace with hash 2097633660, now seen corresponding path program 1 times [2022-07-11 23:53:54,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:54,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210862223] [2022-07-11 23:53:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:54,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 223 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-11 23:53:54,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:54,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210862223] [2022-07-11 23:53:54,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210862223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:54,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:54,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:54,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833804790] [2022-07-11 23:53:54,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:54,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:54,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:54,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:54,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:54,887 INFO L87 Difference]: Start difference. First operand 3281 states and 4762 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:56,222 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:53:56,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:56,561 INFO L93 Difference]: Finished difference Result 6818 states and 9868 transitions. [2022-07-11 23:53:56,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:56,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-07-11 23:53:56,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:56,566 INFO L225 Difference]: With dead ends: 6818 [2022-07-11 23:53:56,566 INFO L226 Difference]: Without dead ends: 3560 [2022-07-11 23:53:56,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:56,570 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 118 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:56,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 342 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-11 23:53:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3560 states. [2022-07-11 23:53:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3560 to 3281. [2022-07-11 23:53:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3280 states have (on average 1.4414634146341463) internal successors, (4728), 3280 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 4728 transitions. [2022-07-11 23:53:56,652 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 4728 transitions. Word has length 181 [2022-07-11 23:53:56,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:56,653 INFO L495 AbstractCegarLoop]: Abstraction has 3281 states and 4728 transitions. [2022-07-11 23:53:56,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:56,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 4728 transitions. [2022-07-11 23:53:56,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-11 23:53:56,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:56,657 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, 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] [2022-07-11 23:53:56,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-07-11 23:53:56,657 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:56,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:56,657 INFO L85 PathProgramCache]: Analyzing trace with hash -2085864285, now seen corresponding path program 1 times [2022-07-11 23:53:56,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:56,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118997573] [2022-07-11 23:53:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:56,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 240 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-11 23:53:56,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:56,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118997573] [2022-07-11 23:53:56,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118997573] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:56,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:56,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:53:56,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60975927] [2022-07-11 23:53:56,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:56,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:53:56,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:56,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:53:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:53:56,806 INFO L87 Difference]: Start difference. First operand 3281 states and 4728 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:58,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:53:58,097 INFO L93 Difference]: Finished difference Result 7288 states and 10467 transitions. [2022-07-11 23:53:58,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:53:58,097 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 190 [2022-07-11 23:53:58,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:53:58,101 INFO L225 Difference]: With dead ends: 7288 [2022-07-11 23:53:58,101 INFO L226 Difference]: Without dead ends: 4030 [2022-07-11 23:53:58,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:58,104 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 112 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 23:53:58,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 350 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-11 23:53:58,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2022-07-11 23:53:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 3561. [2022-07-11 23:53:58,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 3560 states have (on average 1.4373595505617978) internal successors, (5117), 3560 states have internal predecessors, (5117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5117 transitions. [2022-07-11 23:53:58,193 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5117 transitions. Word has length 190 [2022-07-11 23:53:58,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:53:58,194 INFO L495 AbstractCegarLoop]: Abstraction has 3561 states and 5117 transitions. [2022-07-11 23:53:58,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:58,194 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5117 transitions. [2022-07-11 23:53:58,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-11 23:53:58,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:53:58,197 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:53:58,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-07-11 23:53:58,198 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:53:58,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:53:58,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1353374457, now seen corresponding path program 1 times [2022-07-11 23:53:58,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:53:58,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764636134] [2022-07-11 23:53:58,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:53:58,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:53:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:53:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2022-07-11 23:53:58,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:53:58,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764636134] [2022-07-11 23:53:58,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764636134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:53:58,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:53:58,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:53:58,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731683937] [2022-07-11 23:53:58,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:53:58,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:53:58,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:53:58,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:53:58,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:53:58,781 INFO L87 Difference]: Start difference. First operand 3561 states and 5117 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:53:59,816 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-11 23:54:00,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:54:00,663 INFO L93 Difference]: Finished difference Result 7119 states and 10230 transitions. [2022-07-11 23:54:00,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-11 23:54:00,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-07-11 23:54:00,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:54:00,667 INFO L225 Difference]: With dead ends: 7119 [2022-07-11 23:54:00,667 INFO L226 Difference]: Without dead ends: 3561 [2022-07-11 23:54:00,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-11 23:54:00,671 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 7 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-11 23:54:00,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 671 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-11 23:54:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2022-07-11 23:54:00,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3561. [2022-07-11 23:54:00,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3561 states, 3560 states have (on average 1.4370786516853933) internal successors, (5116), 3560 states have internal predecessors, (5116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:00,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3561 states to 3561 states and 5116 transitions. [2022-07-11 23:54:00,760 INFO L78 Accepts]: Start accepts. Automaton has 3561 states and 5116 transitions. Word has length 192 [2022-07-11 23:54:00,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:54:00,760 INFO L495 AbstractCegarLoop]: Abstraction has 3561 states and 5116 transitions. [2022-07-11 23:54:00,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 23:54:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3561 states and 5116 transitions. [2022-07-11 23:54:00,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-11 23:54:00,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:54:00,764 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:54:00,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-07-11 23:54:00,764 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:54:00,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:54:00,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1826610107, now seen corresponding path program 1 times [2022-07-11 23:54:00,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:54:00,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023527661] [2022-07-11 23:54:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:00,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:54:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 0 proven. 209 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-07-11 23:54:02,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:54:02,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023527661] [2022-07-11 23:54:02,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023527661] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 23:54:02,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131835911] [2022-07-11 23:54:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:54:02,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:54:02,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:54:02,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-11 23:54:02,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 23:54:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:54:03,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 190 conjunts are in the unsatisfiable core [2022-07-11 23:54:03,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:54:04,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:04,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:05,605 INFO L356 Elim1Store]: treesize reduction 520, result has 8.1 percent of original size [2022-07-11 23:54:05,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 1464934 treesize of output 1335204 [2022-07-11 23:54:05,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:05,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:05,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:05,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:05,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:05,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:54:05,881 INFO L190 IndexEqualityManager]: detected not equals via solver