./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.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 219fae8b2e03d20bcb768458013f321b0dd264dfdc5412ade22b395f9d4baa67 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:06:03,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:06:03,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:06:03,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:06:03,059 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:06:03,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:06:03,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:06:03,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:06:03,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:06:03,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:06:03,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:06:03,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:06:03,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:06:03,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:06:03,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:06:03,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:06:03,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:06:03,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:06:03,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:06:03,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:06:03,082 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:06:03,083 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:06:03,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:06:03,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:06:03,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:06:03,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:06:03,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:06:03,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:06:03,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:06:03,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:06:03,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:06:03,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:06:03,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:06:03,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:06:03,093 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:06:03,094 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:06:03,094 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:06:03,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:06:03,095 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:06:03,095 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:06:03,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:06:03,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:06:03,097 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:06:03,119 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:06:03,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:06:03,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:06:03,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:06:03,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:06:03,121 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:06:03,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:06:03,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:06:03,122 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:06:03,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:06:03,122 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:06:03,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:06:03,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:06:03,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:06:03,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:06:03,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:06:03,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:06:03,123 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:06:03,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:06:03,123 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:06:03,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:06:03,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:06:03,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:06:03,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:06:03,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:06:03,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:06:03,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:06:03,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:06:03,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:06:03,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:06:03,125 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:06:03,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:06:03,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:06:03,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 219fae8b2e03d20bcb768458013f321b0dd264dfdc5412ade22b395f9d4baa67 [2022-07-13 21:06:03,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:06:03,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:06:03,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:06:03,313 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:06:03,313 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:06:03,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c [2022-07-13 21:06:03,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67c4079a7/c03f7877ab694fa6aba8737240ccdddd/FLAGd76efaaae [2022-07-13 21:06:03,897 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:06:03,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c [2022-07-13 21:06:03,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67c4079a7/c03f7877ab694fa6aba8737240ccdddd/FLAGd76efaaae [2022-07-13 21:06:04,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67c4079a7/c03f7877ab694fa6aba8737240ccdddd [2022-07-13 21:06:04,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:06:04,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:06:04,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:06:04,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:06:04,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:06:04,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:06:04" (1/1) ... [2022-07-13 21:06:04,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@359963a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:04, skipping insertion in model container [2022-07-13 21:06:04,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:06:04" (1/1) ... [2022-07-13 21:06:04,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:06:04,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:06:04,646 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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c[26888,26901] [2022-07-13 21:06:04,663 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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c[30395,30408] [2022-07-13 21:06:05,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:06:05,103 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:06:05,140 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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c[26888,26901] [2022-07-13 21:06:05,143 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/combinations/pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c[30395,30408] [2022-07-13 21:06:05,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:06:05,430 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:06:05,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:05 WrapperNode [2022-07-13 21:06:05,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:06:05,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:06:05,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:06:05,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:06:05,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:05" (1/1) ... [2022-07-13 21:06:05,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:05" (1/1) ... [2022-07-13 21:06:05,726 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5279 [2022-07-13 21:06:05,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:06:05,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:06:05,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:06:05,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:06:05,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:05" (1/1) ... [2022-07-13 21:06:05,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:05" (1/1) ... [2022-07-13 21:06:05,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:05" (1/1) ... [2022-07-13 21:06:05,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:05" (1/1) ... [2022-07-13 21:06:06,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:05" (1/1) ... [2022-07-13 21:06:06,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:05" (1/1) ... [2022-07-13 21:06:06,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:05" (1/1) ... [2022-07-13 21:06:06,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:06:06,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:06:06,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:06:06,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:06:06,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:05" (1/1) ... [2022-07-13 21:06:06,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:06:06,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:06:06,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:06:06,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:06:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:06:06,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:06:06,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:06:06,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:06:06,271 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:06:06,273 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:06:08,914 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:06:08,926 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:06:08,927 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 21:06:08,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:06:08 BoogieIcfgContainer [2022-07-13 21:06:08,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:06:08,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:06:08,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:06:08,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:06:08,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:06:04" (1/3) ... [2022-07-13 21:06:08,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81714e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:06:08, skipping insertion in model container [2022-07-13 21:06:08,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:06:05" (2/3) ... [2022-07-13 21:06:08,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81714e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:06:08, skipping insertion in model container [2022-07-13 21:06:08,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:06:08" (3/3) ... [2022-07-13 21:06:08,934 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.UNBOUNDED.pals+Problem12_label08.c [2022-07-13 21:06:08,943 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:06:08,943 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:06:08,984 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:06:08,988 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@25dad7c9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7cd7ee1d [2022-07-13 21:06:08,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:06:08,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:09,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 21:06:09,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:09,001 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] [2022-07-13 21:06:09,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:09,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:09,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1826483091, now seen corresponding path program 1 times [2022-07-13 21:06:09,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:09,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260846139] [2022-07-13 21:06:09,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:09,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:09,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:09,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260846139] [2022-07-13 21:06:09,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260846139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:09,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:09,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:06:09,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548737817] [2022-07-13 21:06:09,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:09,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:09,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:09,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:09,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:09,210 INFO L87 Difference]: Start difference. First operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 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 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:12,110 INFO L93 Difference]: Finished difference Result 2616 states and 5018 transitions. [2022-07-13 21:06:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:12,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-07-13 21:06:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:12,129 INFO L225 Difference]: With dead ends: 2616 [2022-07-13 21:06:12,129 INFO L226 Difference]: Without dead ends: 1650 [2022-07-13 21:06:12,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:12,136 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1059 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:12,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 366 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-13 21:06:12,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-07-13 21:06:12,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-07-13 21:06:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.8567961165048543) internal successors, (3060), 1649 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:12,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 3060 transitions. [2022-07-13 21:06:12,229 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 3060 transitions. Word has length 30 [2022-07-13 21:06:12,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:12,230 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 3060 transitions. [2022-07-13 21:06:12,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:12,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 3060 transitions. [2022-07-13 21:06:12,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 21:06:12,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:12,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:12,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:06:12,236 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:12,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:12,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2022-07-13 21:06:12,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:12,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497989137] [2022-07-13 21:06:12,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:12,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:12,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:12,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:12,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497989137] [2022-07-13 21:06:12,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497989137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:12,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:12,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:06:12,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305349695] [2022-07-13 21:06:12,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:12,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:06:12,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:12,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:06:12,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:06:12,340 INFO L87 Difference]: Start difference. First operand 1650 states and 3060 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:12,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:12,412 INFO L93 Difference]: Finished difference Result 1732 states and 3188 transitions. [2022-07-13 21:06:12,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:06:12,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-07-13 21:06:12,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:12,417 INFO L225 Difference]: With dead ends: 1732 [2022-07-13 21:06:12,417 INFO L226 Difference]: Without dead ends: 1650 [2022-07-13 21:06:12,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:06:12,421 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 3 mSDsluCounter, 5003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:12,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6692 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:12,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1650 states. [2022-07-13 21:06:12,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1650 to 1650. [2022-07-13 21:06:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1648 states have (on average 1.8197815533980584) internal successors, (2999), 1649 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:12,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2999 transitions. [2022-07-13 21:06:12,453 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2999 transitions. Word has length 46 [2022-07-13 21:06:12,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:12,453 INFO L495 AbstractCegarLoop]: Abstraction has 1650 states and 2999 transitions. [2022-07-13 21:06:12,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:12,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2999 transitions. [2022-07-13 21:06:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-13 21:06:12,460 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:12,460 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:12,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:06:12,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:12,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:12,462 INFO L85 PathProgramCache]: Analyzing trace with hash -194181203, now seen corresponding path program 1 times [2022-07-13 21:06:12,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:12,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621472256] [2022-07-13 21:06:12,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:12,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:12,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:12,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621472256] [2022-07-13 21:06:12,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621472256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:12,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:12,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:12,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335382491] [2022-07-13 21:06:12,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:12,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:06:12,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:12,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:06:12,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:06:12,556 INFO L87 Difference]: Start difference. First operand 1650 states and 2999 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:16,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:16,627 INFO L93 Difference]: Finished difference Result 5415 states and 9987 transitions. [2022-07-13 21:06:16,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:06:16,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 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 [2022-07-13 21:06:16,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:16,638 INFO L225 Difference]: With dead ends: 5415 [2022-07-13 21:06:16,638 INFO L226 Difference]: Without dead ends: 3911 [2022-07-13 21:06:16,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:06:16,641 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 2688 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 1534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2688 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 5146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1534 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:16,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2688 Valid, 388 Invalid, 5146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1534 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-13 21:06:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3911 states. [2022-07-13 21:06:16,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3911 to 3903. [2022-07-13 21:06:16,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3903 states, 3901 states have (on average 1.5957446808510638) internal successors, (6225), 3902 states have internal predecessors, (6225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3903 states to 3903 states and 6225 transitions. [2022-07-13 21:06:16,699 INFO L78 Accepts]: Start accepts. Automaton has 3903 states and 6225 transitions. Word has length 95 [2022-07-13 21:06:16,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:16,699 INFO L495 AbstractCegarLoop]: Abstraction has 3903 states and 6225 transitions. [2022-07-13 21:06:16,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 3903 states and 6225 transitions. [2022-07-13 21:06:16,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 21:06:16,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:16,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:16,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:06:16,701 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:16,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:16,702 INFO L85 PathProgramCache]: Analyzing trace with hash 909369916, now seen corresponding path program 1 times [2022-07-13 21:06:16,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:16,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847376474] [2022-07-13 21:06:16,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:16,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-13 21:06:16,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:16,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847376474] [2022-07-13 21:06:16,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847376474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:16,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:16,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:06:16,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363944984] [2022-07-13 21:06:16,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:16,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:16,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:16,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:16,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:16,805 INFO L87 Difference]: Start difference. First operand 3903 states and 6225 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:19,335 INFO L93 Difference]: Finished difference Result 10664 states and 17531 transitions. [2022-07-13 21:06:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:19,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-07-13 21:06:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:19,352 INFO L225 Difference]: With dead ends: 10664 [2022-07-13 21:06:19,353 INFO L226 Difference]: Without dead ends: 6907 [2022-07-13 21:06:19,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:19,356 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 916 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2289 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 2289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:19,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 713 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 2289 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:06:19,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6907 states. [2022-07-13 21:06:19,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6907 to 6907. [2022-07-13 21:06:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6907 states, 6905 states have (on average 1.4477914554670528) internal successors, (9997), 6906 states have internal predecessors, (9997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:19,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6907 states to 6907 states and 9997 transitions. [2022-07-13 21:06:19,437 INFO L78 Accepts]: Start accepts. Automaton has 6907 states and 9997 transitions. Word has length 101 [2022-07-13 21:06:19,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:19,439 INFO L495 AbstractCegarLoop]: Abstraction has 6907 states and 9997 transitions. [2022-07-13 21:06:19,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:19,439 INFO L276 IsEmpty]: Start isEmpty. Operand 6907 states and 9997 transitions. [2022-07-13 21:06:19,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:19,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:19,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:19,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:06:19,441 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:19,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:19,442 INFO L85 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2022-07-13 21:06:19,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:19,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757405829] [2022-07-13 21:06:19,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:19,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:19,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:19,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:19,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757405829] [2022-07-13 21:06:19,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757405829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:19,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:19,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:19,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607249824] [2022-07-13 21:06:19,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:19,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:19,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:19,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:19,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:19,529 INFO L87 Difference]: Start difference. First operand 6907 states and 9997 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:19,562 INFO L93 Difference]: Finished difference Result 7057 states and 10235 transitions. [2022-07-13 21:06:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:19,563 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 106 [2022-07-13 21:06:19,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:19,581 INFO L225 Difference]: With dead ends: 7057 [2022-07-13 21:06:19,581 INFO L226 Difference]: Without dead ends: 6979 [2022-07-13 21:06:19,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:19,589 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 1549 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:19,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:19,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6979 states. [2022-07-13 21:06:19,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6979 to 6977. [2022-07-13 21:06:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6977 states, 6975 states have (on average 1.4493189964157707) internal successors, (10109), 6976 states have internal predecessors, (10109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 10109 transitions. [2022-07-13 21:06:19,676 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 10109 transitions. Word has length 106 [2022-07-13 21:06:19,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:19,679 INFO L495 AbstractCegarLoop]: Abstraction has 6977 states and 10109 transitions. [2022-07-13 21:06:19,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:19,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 10109 transitions. [2022-07-13 21:06:19,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:19,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:19,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:19,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:06:19,682 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:19,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:19,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2022-07-13 21:06:19,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:19,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506158768] [2022-07-13 21:06:19,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:19,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:19,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:19,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506158768] [2022-07-13 21:06:19,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506158768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:19,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:19,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:19,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826880783] [2022-07-13 21:06:19,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:19,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:19,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:19,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:19,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:19,754 INFO L87 Difference]: Start difference. First operand 6977 states and 10109 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:19,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:19,791 INFO L93 Difference]: Finished difference Result 7261 states and 10561 transitions. [2022-07-13 21:06:19,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:19,792 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 106 [2022-07-13 21:06:19,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:19,818 INFO L225 Difference]: With dead ends: 7261 [2022-07-13 21:06:19,818 INFO L226 Difference]: Without dead ends: 7113 [2022-07-13 21:06:19,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:19,824 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1545 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:19,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 1849 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:19,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2022-07-13 21:06:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 7111. [2022-07-13 21:06:19,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7111 states, 7109 states have (on average 1.4519623013082008) internal successors, (10322), 7110 states have internal predecessors, (10322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:19,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7111 states to 7111 states and 10322 transitions. [2022-07-13 21:06:19,923 INFO L78 Accepts]: Start accepts. Automaton has 7111 states and 10322 transitions. Word has length 106 [2022-07-13 21:06:19,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:19,924 INFO L495 AbstractCegarLoop]: Abstraction has 7111 states and 10322 transitions. [2022-07-13 21:06:19,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:19,924 INFO L276 IsEmpty]: Start isEmpty. Operand 7111 states and 10322 transitions. [2022-07-13 21:06:19,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:19,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:19,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:19,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:06:19,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:19,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:19,926 INFO L85 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2022-07-13 21:06:19,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:19,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797507579] [2022-07-13 21:06:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:19,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:19,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:19,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:19,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797507579] [2022-07-13 21:06:19,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797507579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:19,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:19,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:19,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484626570] [2022-07-13 21:06:19,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:19,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:19,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:19,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:19,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:19,987 INFO L87 Difference]: Start difference. First operand 7111 states and 10322 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:20,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:20,026 INFO L93 Difference]: Finished difference Result 7651 states and 11180 transitions. [2022-07-13 21:06:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:20,027 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 106 [2022-07-13 21:06:20,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:20,037 INFO L225 Difference]: With dead ends: 7651 [2022-07-13 21:06:20,037 INFO L226 Difference]: Without dead ends: 7369 [2022-07-13 21:06:20,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:20,041 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 1541 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:20,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 1848 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:20,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7369 states. [2022-07-13 21:06:20,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7369 to 7367. [2022-07-13 21:06:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7367 states, 7365 states have (on average 1.456347589952478) internal successors, (10726), 7366 states have internal predecessors, (10726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 10726 transitions. [2022-07-13 21:06:20,128 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 10726 transitions. Word has length 106 [2022-07-13 21:06:20,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:20,129 INFO L495 AbstractCegarLoop]: Abstraction has 7367 states and 10726 transitions. [2022-07-13 21:06:20,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:20,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 10726 transitions. [2022-07-13 21:06:20,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:20,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:20,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:20,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:06:20,131 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:20,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:20,131 INFO L85 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2022-07-13 21:06:20,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:20,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307087138] [2022-07-13 21:06:20,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:20,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:20,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:20,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307087138] [2022-07-13 21:06:20,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307087138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:20,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:20,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:20,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592726178] [2022-07-13 21:06:20,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:20,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:20,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:20,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:20,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:20,189 INFO L87 Difference]: Start difference. First operand 7367 states and 10726 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:20,237 INFO L93 Difference]: Finished difference Result 8395 states and 12352 transitions. [2022-07-13 21:06:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:20,237 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 106 [2022-07-13 21:06:20,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:20,247 INFO L225 Difference]: With dead ends: 8395 [2022-07-13 21:06:20,247 INFO L226 Difference]: Without dead ends: 7857 [2022-07-13 21:06:20,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:20,250 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 1537 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:20,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1847 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:20,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7857 states. [2022-07-13 21:06:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7857 to 7855. [2022-07-13 21:06:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7855 states, 7853 states have (on average 1.4631351076021903) internal successors, (11490), 7854 states have internal predecessors, (11490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7855 states to 7855 states and 11490 transitions. [2022-07-13 21:06:20,378 INFO L78 Accepts]: Start accepts. Automaton has 7855 states and 11490 transitions. Word has length 106 [2022-07-13 21:06:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:20,379 INFO L495 AbstractCegarLoop]: Abstraction has 7855 states and 11490 transitions. [2022-07-13 21:06:20,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:20,379 INFO L276 IsEmpty]: Start isEmpty. Operand 7855 states and 11490 transitions. [2022-07-13 21:06:20,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:20,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:20,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:20,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:06:20,380 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:20,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:20,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2022-07-13 21:06:20,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:20,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34113722] [2022-07-13 21:06:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:20,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:20,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:20,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34113722] [2022-07-13 21:06:20,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34113722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:20,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:20,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:20,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593087863] [2022-07-13 21:06:20,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:20,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:20,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:20,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:20,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:20,431 INFO L87 Difference]: Start difference. First operand 7855 states and 11490 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:20,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:20,496 INFO L93 Difference]: Finished difference Result 9811 states and 14564 transitions. [2022-07-13 21:06:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:20,497 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 106 [2022-07-13 21:06:20,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:20,509 INFO L225 Difference]: With dead ends: 9811 [2022-07-13 21:06:20,509 INFO L226 Difference]: Without dead ends: 8785 [2022-07-13 21:06:20,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:20,514 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 1533 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:20,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1846 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:20,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8785 states. [2022-07-13 21:06:20,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8785 to 8783. [2022-07-13 21:06:20,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8783 states, 8781 states have (on average 1.4724974376494704) internal successors, (12930), 8782 states have internal predecessors, (12930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8783 states to 8783 states and 12930 transitions. [2022-07-13 21:06:20,628 INFO L78 Accepts]: Start accepts. Automaton has 8783 states and 12930 transitions. Word has length 106 [2022-07-13 21:06:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:20,628 INFO L495 AbstractCegarLoop]: Abstraction has 8783 states and 12930 transitions. [2022-07-13 21:06:20,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:20,629 INFO L276 IsEmpty]: Start isEmpty. Operand 8783 states and 12930 transitions. [2022-07-13 21:06:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:20,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:20,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:20,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:06:20,630 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:20,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:20,631 INFO L85 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2022-07-13 21:06:20,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:20,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837250549] [2022-07-13 21:06:20,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:20,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:20,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:20,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837250549] [2022-07-13 21:06:20,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837250549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:20,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:20,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:20,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989072890] [2022-07-13 21:06:20,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:20,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:20,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:20,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:20,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:20,674 INFO L87 Difference]: Start difference. First operand 8783 states and 12930 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:20,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:20,782 INFO L93 Difference]: Finished difference Result 12499 states and 18724 transitions. [2022-07-13 21:06:20,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:20,782 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 106 [2022-07-13 21:06:20,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:20,797 INFO L225 Difference]: With dead ends: 12499 [2022-07-13 21:06:20,797 INFO L226 Difference]: Without dead ends: 10545 [2022-07-13 21:06:20,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:20,802 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1529 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:20,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 1845 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:20,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10545 states. [2022-07-13 21:06:21,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10545 to 10543. [2022-07-13 21:06:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10543 states, 10541 states have (on average 1.4831609904183665) internal successors, (15634), 10542 states have internal predecessors, (15634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10543 states to 10543 states and 15634 transitions. [2022-07-13 21:06:21,037 INFO L78 Accepts]: Start accepts. Automaton has 10543 states and 15634 transitions. Word has length 106 [2022-07-13 21:06:21,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:21,037 INFO L495 AbstractCegarLoop]: Abstraction has 10543 states and 15634 transitions. [2022-07-13 21:06:21,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 10543 states and 15634 transitions. [2022-07-13 21:06:21,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:21,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:21,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:21,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:06:21,039 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:21,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:21,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2022-07-13 21:06:21,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:21,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530745090] [2022-07-13 21:06:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:21,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:21,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:21,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530745090] [2022-07-13 21:06:21,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530745090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:21,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:21,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:21,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800422286] [2022-07-13 21:06:21,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:21,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:21,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:21,080 INFO L87 Difference]: Start difference. First operand 10543 states and 15634 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:21,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:21,275 INFO L93 Difference]: Finished difference Result 17587 states and 26516 transitions. [2022-07-13 21:06:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:21,275 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 106 [2022-07-13 21:06:21,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:21,295 INFO L225 Difference]: With dead ends: 17587 [2022-07-13 21:06:21,295 INFO L226 Difference]: Without dead ends: 13873 [2022-07-13 21:06:21,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:21,303 INFO L413 NwaCegarLoop]: 1694 mSDtfsCounter, 1525 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:21,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1844 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:21,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13873 states. [2022-07-13 21:06:21,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13873 to 13871. [2022-07-13 21:06:21,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13871 states, 13869 states have (on average 1.4918162809142692) internal successors, (20690), 13870 states have internal predecessors, (20690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13871 states to 13871 states and 20690 transitions. [2022-07-13 21:06:21,643 INFO L78 Accepts]: Start accepts. Automaton has 13871 states and 20690 transitions. Word has length 106 [2022-07-13 21:06:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:21,643 INFO L495 AbstractCegarLoop]: Abstraction has 13871 states and 20690 transitions. [2022-07-13 21:06:21,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 13871 states and 20690 transitions. [2022-07-13 21:06:21,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:06:21,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:21,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:21,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:06:21,645 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:21,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2022-07-13 21:06:21,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:21,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276973504] [2022-07-13 21:06:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:21,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:21,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:21,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276973504] [2022-07-13 21:06:21,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276973504] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:21,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:21,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:06:21,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951619856] [2022-07-13 21:06:21,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:21,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:06:21,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:21,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:06:21,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:06:21,741 INFO L87 Difference]: Start difference. First operand 13871 states and 20690 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:26,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:26,030 INFO L93 Difference]: Finished difference Result 126543 states and 193762 transitions. [2022-07-13 21:06:26,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:06:26,030 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 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 106 [2022-07-13 21:06:26,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:26,251 INFO L225 Difference]: With dead ends: 126543 [2022-07-13 21:06:26,251 INFO L226 Difference]: Without dead ends: 119501 [2022-07-13 21:06:26,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-07-13 21:06:26,288 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 15488 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15488 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:26,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15488 Valid, 4869 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:06:26,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119501 states. [2022-07-13 21:06:27,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119501 to 20911. [2022-07-13 21:06:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20911 states, 20909 states have (on average 1.494571715529198) internal successors, (31250), 20910 states have internal predecessors, (31250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20911 states to 20911 states and 31250 transitions. [2022-07-13 21:06:27,923 INFO L78 Accepts]: Start accepts. Automaton has 20911 states and 31250 transitions. Word has length 106 [2022-07-13 21:06:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:27,923 INFO L495 AbstractCegarLoop]: Abstraction has 20911 states and 31250 transitions. [2022-07-13 21:06:27,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:27,924 INFO L276 IsEmpty]: Start isEmpty. Operand 20911 states and 31250 transitions. [2022-07-13 21:06:27,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 21:06:27,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:27,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:27,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:06:27,925 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2022-07-13 21:06:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:27,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793923436] [2022-07-13 21:06:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:27,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:27,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:27,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:27,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793923436] [2022-07-13 21:06:27,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793923436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:27,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:27,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:27,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568519955] [2022-07-13 21:06:27,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:27,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:27,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:27,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:27,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:27,967 INFO L87 Difference]: Start difference. First operand 20911 states and 31250 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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) [2022-07-13 21:06:30,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:30,154 INFO L93 Difference]: Finished difference Result 47667 states and 71572 transitions. [2022-07-13 21:06:30,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:30,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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 108 [2022-07-13 21:06:30,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:30,201 INFO L225 Difference]: With dead ends: 47667 [2022-07-13 21:06:30,201 INFO L226 Difference]: Without dead ends: 33585 [2022-07-13 21:06:30,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:30,222 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 1516 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:30,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:30,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33585 states. [2022-07-13 21:06:32,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33585 to 33327. [2022-07-13 21:06:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33327 states, 33325 states have (on average 1.4793098274568641) internal successors, (49298), 33326 states have internal predecessors, (49298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:32,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33327 states to 33327 states and 49298 transitions. [2022-07-13 21:06:32,305 INFO L78 Accepts]: Start accepts. Automaton has 33327 states and 49298 transitions. Word has length 108 [2022-07-13 21:06:32,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:32,305 INFO L495 AbstractCegarLoop]: Abstraction has 33327 states and 49298 transitions. [2022-07-13 21:06:32,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 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) [2022-07-13 21:06:32,306 INFO L276 IsEmpty]: Start isEmpty. Operand 33327 states and 49298 transitions. [2022-07-13 21:06:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 21:06:32,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:32,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:32,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:06:32,307 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2022-07-13 21:06:32,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:32,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351211437] [2022-07-13 21:06:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:32,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:32,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:32,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351211437] [2022-07-13 21:06:32,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351211437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:32,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:32,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:06:32,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137834258] [2022-07-13 21:06:32,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:32,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:06:32,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:32,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:06:32,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:06:32,504 INFO L87 Difference]: Start difference. First operand 33327 states and 49298 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 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) [2022-07-13 21:06:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:34,946 INFO L93 Difference]: Finished difference Result 59827 states and 88724 transitions. [2022-07-13 21:06:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:06:34,946 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 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 108 [2022-07-13 21:06:34,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:34,988 INFO L225 Difference]: With dead ends: 59827 [2022-07-13 21:06:34,988 INFO L226 Difference]: Without dead ends: 33329 [2022-07-13 21:06:35,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:06:35,018 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 11193 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11193 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:35,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11193 Valid, 2470 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:06:35,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33329 states. [2022-07-13 21:06:37,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33329 to 33327. [2022-07-13 21:06:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33327 states, 33325 states have (on average 1.4716279069767442) internal successors, (49042), 33326 states have internal predecessors, (49042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:37,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33327 states to 33327 states and 49042 transitions. [2022-07-13 21:06:37,609 INFO L78 Accepts]: Start accepts. Automaton has 33327 states and 49042 transitions. Word has length 108 [2022-07-13 21:06:37,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:37,610 INFO L495 AbstractCegarLoop]: Abstraction has 33327 states and 49042 transitions. [2022-07-13 21:06:37,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 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) [2022-07-13 21:06:37,610 INFO L276 IsEmpty]: Start isEmpty. Operand 33327 states and 49042 transitions. [2022-07-13 21:06:37,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 21:06:37,611 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:37,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:37,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:06:37,611 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:37,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:37,612 INFO L85 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2022-07-13 21:06:37,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:37,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558296850] [2022-07-13 21:06:37,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:37,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:37,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:37,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:37,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558296850] [2022-07-13 21:06:37,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558296850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:37,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:37,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:06:37,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859954857] [2022-07-13 21:06:37,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:37,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:06:37,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:37,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:06:37,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:06:37,689 INFO L87 Difference]: Start difference. First operand 33327 states and 49042 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 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) [2022-07-13 21:06:39,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:39,847 INFO L93 Difference]: Finished difference Result 59825 states and 88211 transitions. [2022-07-13 21:06:39,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:06:39,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 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 109 [2022-07-13 21:06:39,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:39,885 INFO L225 Difference]: With dead ends: 59825 [2022-07-13 21:06:39,885 INFO L226 Difference]: Without dead ends: 33327 [2022-07-13 21:06:39,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:06:39,905 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 4752 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4752 SdHoareTripleChecker+Valid, 3123 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:39,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4752 Valid, 3123 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:39,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33327 states. [2022-07-13 21:06:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33327 to 33327. [2022-07-13 21:06:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33327 states, 33325 states have (on average 1.4639459864966242) internal successors, (48786), 33326 states have internal predecessors, (48786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33327 states to 33327 states and 48786 transitions. [2022-07-13 21:06:42,033 INFO L78 Accepts]: Start accepts. Automaton has 33327 states and 48786 transitions. Word has length 109 [2022-07-13 21:06:42,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:42,033 INFO L495 AbstractCegarLoop]: Abstraction has 33327 states and 48786 transitions. [2022-07-13 21:06:42,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 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) [2022-07-13 21:06:42,033 INFO L276 IsEmpty]: Start isEmpty. Operand 33327 states and 48786 transitions. [2022-07-13 21:06:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 21:06:42,034 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:42,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:42,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:06:42,034 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:42,034 INFO L85 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2022-07-13 21:06:42,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:42,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786367529] [2022-07-13 21:06:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:42,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:42,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:42,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786367529] [2022-07-13 21:06:42,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786367529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:42,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:42,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:06:42,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922651065] [2022-07-13 21:06:42,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:42,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:06:42,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:42,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:06:42,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:06:42,116 INFO L87 Difference]: Start difference. First operand 33327 states and 48786 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 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) [2022-07-13 21:06:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:45,812 INFO L93 Difference]: Finished difference Result 52953 states and 77255 transitions. [2022-07-13 21:06:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:06:45,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 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 109 [2022-07-13 21:06:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:45,880 INFO L225 Difference]: With dead ends: 52953 [2022-07-13 21:06:45,880 INFO L226 Difference]: Without dead ends: 52951 [2022-07-13 21:06:45,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:06:45,894 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 339 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:45,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 6577 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:45,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52951 states. [2022-07-13 21:06:48,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52951 to 34095. [2022-07-13 21:06:48,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34095 states, 34093 states have (on average 1.4497404159211569) internal successors, (49426), 34094 states have internal predecessors, (49426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:48,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34095 states to 34095 states and 49426 transitions. [2022-07-13 21:06:48,528 INFO L78 Accepts]: Start accepts. Automaton has 34095 states and 49426 transitions. Word has length 109 [2022-07-13 21:06:48,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:48,529 INFO L495 AbstractCegarLoop]: Abstraction has 34095 states and 49426 transitions. [2022-07-13 21:06:48,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 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) [2022-07-13 21:06:48,529 INFO L276 IsEmpty]: Start isEmpty. Operand 34095 states and 49426 transitions. [2022-07-13 21:06:48,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 21:06:48,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:48,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:48,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:06:48,530 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:48,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:48,530 INFO L85 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2022-07-13 21:06:48,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:48,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876326950] [2022-07-13 21:06:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:48,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:48,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:06:48,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:48,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876326950] [2022-07-13 21:06:48,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876326950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:48,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:48,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:06:48,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884085837] [2022-07-13 21:06:48,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:48,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:06:48,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:48,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:06:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:48,590 INFO L87 Difference]: Start difference. First operand 34095 states and 49426 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:52,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:06:52,466 INFO L93 Difference]: Finished difference Result 61750 states and 89880 transitions. [2022-07-13 21:06:52,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:06:52,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2022-07-13 21:06:52,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:06:52,520 INFO L225 Difference]: With dead ends: 61750 [2022-07-13 21:06:52,520 INFO L226 Difference]: Without dead ends: 46899 [2022-07-13 21:06:52,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:06:52,538 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 1549 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:06:52,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:06:52,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46899 states. [2022-07-13 21:06:56,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46899 to 46897. [2022-07-13 21:06:56,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46897 states, 46895 states have (on average 1.4443330845505917) internal successors, (67732), 46896 states have internal predecessors, (67732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46897 states to 46897 states and 67732 transitions. [2022-07-13 21:06:56,355 INFO L78 Accepts]: Start accepts. Automaton has 46897 states and 67732 transitions. Word has length 110 [2022-07-13 21:06:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:06:56,355 INFO L495 AbstractCegarLoop]: Abstraction has 46897 states and 67732 transitions. [2022-07-13 21:06:56,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:06:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 46897 states and 67732 transitions. [2022-07-13 21:06:56,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 21:06:56,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:06:56,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:06:56,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:06:56,372 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:06:56,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:06:56,372 INFO L85 PathProgramCache]: Analyzing trace with hash 635734382, now seen corresponding path program 1 times [2022-07-13 21:06:56,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:06:56,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019275104] [2022-07-13 21:06:56,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:06:56,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:06:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:06:56,472 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 21:06:56,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:06:56,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019275104] [2022-07-13 21:06:56,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019275104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:06:56,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:06:56,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:06:56,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439811190] [2022-07-13 21:06:56,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:06:56,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:06:56,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:06:56,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:06:56,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:06:56,474 INFO L87 Difference]: Start difference. First operand 46897 states and 67732 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:07:26,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:07:26,159 INFO L93 Difference]: Finished difference Result 375107 states and 541341 transitions. [2022-07-13 21:07:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:07:26,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 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 [2022-07-13 21:07:26,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:07:26,700 INFO L225 Difference]: With dead ends: 375107 [2022-07-13 21:07:26,700 INFO L226 Difference]: Without dead ends: 335041 [2022-07-13 21:07:26,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:07:26,911 INFO L413 NwaCegarLoop]: 1741 mSDtfsCounter, 13295 mSDsluCounter, 2728 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13295 SdHoareTripleChecker+Valid, 4469 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:07:26,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13295 Valid, 4469 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:07:27,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335041 states. [2022-07-13 21:07:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335041 to 86961. [2022-07-13 21:07:37,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86961 states, 86959 states have (on average 1.4398049655584815) internal successors, (125204), 86960 states have internal predecessors, (125204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:07:37,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86961 states to 86961 states and 125204 transitions. [2022-07-13 21:07:37,210 INFO L78 Accepts]: Start accepts. Automaton has 86961 states and 125204 transitions. Word has length 149 [2022-07-13 21:07:37,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:07:37,211 INFO L495 AbstractCegarLoop]: Abstraction has 86961 states and 125204 transitions. [2022-07-13 21:07:37,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:07:37,211 INFO L276 IsEmpty]: Start isEmpty. Operand 86961 states and 125204 transitions. [2022-07-13 21:07:37,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 21:07:37,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:07:37,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:07:37,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:07:37,227 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:07:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:07:37,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1133048434, now seen corresponding path program 1 times [2022-07-13 21:07:37,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:07:37,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534181953] [2022-07-13 21:07:37,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:07:37,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:07:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:07:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:07:37,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:07:37,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534181953] [2022-07-13 21:07:37,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534181953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:07:37,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:07:37,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:07:37,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492812794] [2022-07-13 21:07:37,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:07:37,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:07:37,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:07:37,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:07:37,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:07:37,316 INFO L87 Difference]: Start difference. First operand 86961 states and 125204 transitions. Second operand has 10 states, 10 states have (on average 13.9) internal successors, (139), 10 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)