./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/locks/test_locks_10.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 c861265e1e1e27fe23877e47c41012b82996e1c7e91f362716a115cbf38b786b --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 00:23:14,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 00:23:14,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 00:23:14,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 00:23:14,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 00:23:14,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 00:23:14,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 00:23:14,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 00:23:14,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 00:23:14,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 00:23:14,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 00:23:14,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 00:23:14,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 00:23:14,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 00:23:14,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 00:23:14,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 00:23:14,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 00:23:14,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 00:23:14,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 00:23:14,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 00:23:14,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 00:23:14,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 00:23:14,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 00:23:14,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 00:23:14,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 00:23:14,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 00:23:14,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 00:23:14,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 00:23:14,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 00:23:14,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 00:23:14,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 00:23:14,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 00:23:14,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 00:23:14,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 00:23:14,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 00:23:14,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 00:23:14,130 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 00:23:14,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 00:23:14,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 00:23:14,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 00:23:14,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 00:23:14,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 00:23:14,161 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 00:23:14,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 00:23:14,161 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 00:23:14,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 00:23:14,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 00:23:14,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 00:23:14,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 00:23:14,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 00:23:14,163 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 00:23:14,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 00:23:14,164 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 00:23:14,164 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 00:23:14,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 00:23:14,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 00:23:14,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 00:23:14,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 00:23:14,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 00:23:14,165 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 00:23:14,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 00:23:14,166 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 00:23:14,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 00:23:14,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 00:23:14,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 00:23:14,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 00:23:14,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:23:14,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 00:23:14,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 00:23:14,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 00:23:14,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 00:23:14,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 00:23:14,168 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 00:23:14,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 00:23:14,168 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 00:23:14,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 00:23:14,169 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 00:23:14,169 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c861265e1e1e27fe23877e47c41012b82996e1c7e91f362716a115cbf38b786b [2023-02-17 00:23:14,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 00:23:14,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 00:23:14,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 00:23:14,451 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 00:23:14,452 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 00:23:14,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_10.c [2023-02-17 00:23:15,604 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 00:23:15,765 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 00:23:15,766 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_10.c [2023-02-17 00:23:15,773 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01540b3d6/7bc8c3f18a964fcd999e594eab3b465c/FLAGf2fc13eb5 [2023-02-17 00:23:15,792 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01540b3d6/7bc8c3f18a964fcd999e594eab3b465c [2023-02-17 00:23:15,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 00:23:15,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 00:23:15,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 00:23:15,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 00:23:15,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 00:23:15,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:23:15" (1/1) ... [2023-02-17 00:23:15,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@470a6df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:15, skipping insertion in model container [2023-02-17 00:23:15,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:23:15" (1/1) ... [2023-02-17 00:23:15,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 00:23:15,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:23:15,980 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_10.c[3901,3914] [2023-02-17 00:23:15,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:23:15,997 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 00:23:16,014 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_10.c[3901,3914] [2023-02-17 00:23:16,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:23:16,024 INFO L208 MainTranslator]: Completed translation [2023-02-17 00:23:16,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16 WrapperNode [2023-02-17 00:23:16,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 00:23:16,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 00:23:16,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 00:23:16,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 00:23:16,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16" (1/1) ... [2023-02-17 00:23:16,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16" (1/1) ... [2023-02-17 00:23:16,051 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 138 [2023-02-17 00:23:16,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 00:23:16,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 00:23:16,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 00:23:16,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 00:23:16,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16" (1/1) ... [2023-02-17 00:23:16,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16" (1/1) ... [2023-02-17 00:23:16,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16" (1/1) ... [2023-02-17 00:23:16,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16" (1/1) ... [2023-02-17 00:23:16,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16" (1/1) ... [2023-02-17 00:23:16,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16" (1/1) ... [2023-02-17 00:23:16,070 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16" (1/1) ... [2023-02-17 00:23:16,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16" (1/1) ... [2023-02-17 00:23:16,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 00:23:16,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 00:23:16,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 00:23:16,074 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 00:23:16,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16" (1/1) ... [2023-02-17 00:23:16,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:23:16,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:23:16,107 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) [2023-02-17 00:23:16,113 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 [2023-02-17 00:23:16,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 00:23:16,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 00:23:16,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 00:23:16,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 00:23:16,189 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 00:23:16,190 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 00:23:16,333 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 00:23:16,339 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 00:23:16,339 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 00:23:16,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:23:16 BoogieIcfgContainer [2023-02-17 00:23:16,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 00:23:16,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 00:23:16,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 00:23:16,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 00:23:16,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 12:23:15" (1/3) ... [2023-02-17 00:23:16,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f07e914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:23:16, skipping insertion in model container [2023-02-17 00:23:16,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:23:16" (2/3) ... [2023-02-17 00:23:16,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f07e914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:23:16, skipping insertion in model container [2023-02-17 00:23:16,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:23:16" (3/3) ... [2023-02-17 00:23:16,348 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2023-02-17 00:23:16,364 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 00:23:16,365 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 00:23:16,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 00:23:16,412 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@69326238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 00:23:16,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 00:23:16,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 38 states have (on average 1.894736842105263) internal successors, (72), 39 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:16,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 00:23:16,420 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:16,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:23:16,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:16,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:16,425 INFO L85 PathProgramCache]: Analyzing trace with hash 153349273, now seen corresponding path program 1 times [2023-02-17 00:23:16,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:16,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577030342] [2023-02-17 00:23:16,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:16,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:16,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:16,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:16,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577030342] [2023-02-17 00:23:16,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577030342] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:16,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:16,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:16,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132141792] [2023-02-17 00:23:16,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:16,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:16,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:16,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:16,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:16,668 INFO L87 Difference]: Start difference. First operand has 40 states, 38 states have (on average 1.894736842105263) internal successors, (72), 39 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:16,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:16,747 INFO L93 Difference]: Finished difference Result 83 states and 145 transitions. [2023-02-17 00:23:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:16,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-02-17 00:23:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:16,757 INFO L225 Difference]: With dead ends: 83 [2023-02-17 00:23:16,768 INFO L226 Difference]: Without dead ends: 69 [2023-02-17 00:23:16,771 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 [2023-02-17 00:23:16,774 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 52 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:16,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 139 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:16,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-02-17 00:23:16,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 47. [2023-02-17 00:23:16,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.8695652173913044) internal successors, (86), 46 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:16,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 86 transitions. [2023-02-17 00:23:16,825 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 86 transitions. Word has length 17 [2023-02-17 00:23:16,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:16,825 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 86 transitions. [2023-02-17 00:23:16,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:16,826 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 86 transitions. [2023-02-17 00:23:16,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 00:23:16,826 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:16,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:23:16,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 00:23:16,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:16,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:16,828 INFO L85 PathProgramCache]: Analyzing trace with hash -433456741, now seen corresponding path program 1 times [2023-02-17 00:23:16,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:16,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255643346] [2023-02-17 00:23:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:16,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:16,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:16,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:16,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255643346] [2023-02-17 00:23:16,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255643346] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:16,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:16,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:16,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783535552] [2023-02-17 00:23:16,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:16,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:16,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:16,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:16,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:16,920 INFO L87 Difference]: Start difference. First operand 47 states and 86 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:16,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:16,941 INFO L93 Difference]: Finished difference Result 114 states and 209 transitions. [2023-02-17 00:23:16,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:16,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-02-17 00:23:16,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:16,943 INFO L225 Difference]: With dead ends: 114 [2023-02-17 00:23:16,943 INFO L226 Difference]: Without dead ends: 69 [2023-02-17 00:23:16,944 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 [2023-02-17 00:23:16,945 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 48 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:16,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 143 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-02-17 00:23:16,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2023-02-17 00:23:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.8484848484848484) internal successors, (122), 66 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:16,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 122 transitions. [2023-02-17 00:23:16,954 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 122 transitions. Word has length 17 [2023-02-17 00:23:16,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:16,955 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 122 transitions. [2023-02-17 00:23:16,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:16,955 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 122 transitions. [2023-02-17 00:23:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 00:23:16,956 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:16,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:23:16,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 00:23:16,957 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:16,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:16,958 INFO L85 PathProgramCache]: Analyzing trace with hash 459073515, now seen corresponding path program 1 times [2023-02-17 00:23:16,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:16,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593685339] [2023-02-17 00:23:16,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:16,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:16,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593685339] [2023-02-17 00:23:17,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593685339] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49377228] [2023-02-17 00:23:17,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,003 INFO L87 Difference]: Start difference. First operand 67 states and 122 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:17,018 INFO L93 Difference]: Finished difference Result 105 states and 186 transitions. [2023-02-17 00:23:17,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:17,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-02-17 00:23:17,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:17,020 INFO L225 Difference]: With dead ends: 105 [2023-02-17 00:23:17,020 INFO L226 Difference]: Without dead ends: 72 [2023-02-17 00:23:17,021 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 [2023-02-17 00:23:17,022 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 50 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:17,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 160 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-02-17 00:23:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2023-02-17 00:23:17,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.7971014492753623) internal successors, (124), 69 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 124 transitions. [2023-02-17 00:23:17,032 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 124 transitions. Word has length 18 [2023-02-17 00:23:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:17,032 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 124 transitions. [2023-02-17 00:23:17,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,033 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 124 transitions. [2023-02-17 00:23:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 00:23:17,033 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:17,034 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:23:17,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 00:23:17,034 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:17,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:17,035 INFO L85 PathProgramCache]: Analyzing trace with hash -552043735, now seen corresponding path program 1 times [2023-02-17 00:23:17,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:17,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021384457] [2023-02-17 00:23:17,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:17,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:17,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021384457] [2023-02-17 00:23:17,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021384457] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875318019] [2023-02-17 00:23:17,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,113 INFO L87 Difference]: Start difference. First operand 70 states and 124 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:17,132 INFO L93 Difference]: Finished difference Result 133 states and 237 transitions. [2023-02-17 00:23:17,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:17,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-02-17 00:23:17,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:17,134 INFO L225 Difference]: With dead ends: 133 [2023-02-17 00:23:17,134 INFO L226 Difference]: Without dead ends: 131 [2023-02-17 00:23:17,135 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 [2023-02-17 00:23:17,136 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 45 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:17,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 125 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:17,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-02-17 00:23:17,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 93. [2023-02-17 00:23:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.7934782608695652) internal successors, (165), 92 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 165 transitions. [2023-02-17 00:23:17,147 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 165 transitions. Word has length 18 [2023-02-17 00:23:17,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:17,148 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 165 transitions. [2023-02-17 00:23:17,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,148 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 165 transitions. [2023-02-17 00:23:17,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 00:23:17,149 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:17,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:23:17,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 00:23:17,150 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:17,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:17,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1138849749, now seen corresponding path program 1 times [2023-02-17 00:23:17,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:17,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400796140] [2023-02-17 00:23:17,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:17,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:17,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:17,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400796140] [2023-02-17 00:23:17,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400796140] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132048503] [2023-02-17 00:23:17,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,189 INFO L87 Difference]: Start difference. First operand 93 states and 165 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:17,205 INFO L93 Difference]: Finished difference Result 221 states and 395 transitions. [2023-02-17 00:23:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:17,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2023-02-17 00:23:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:17,207 INFO L225 Difference]: With dead ends: 221 [2023-02-17 00:23:17,207 INFO L226 Difference]: Without dead ends: 133 [2023-02-17 00:23:17,208 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 [2023-02-17 00:23:17,209 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 47 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:17,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 144 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:17,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-17 00:23:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2023-02-17 00:23:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.7769230769230768) internal successors, (231), 130 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 231 transitions. [2023-02-17 00:23:17,222 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 231 transitions. Word has length 18 [2023-02-17 00:23:17,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:17,222 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 231 transitions. [2023-02-17 00:23:17,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,222 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 231 transitions. [2023-02-17 00:23:17,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 00:23:17,223 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:17,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:23:17,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 00:23:17,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:17,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:17,225 INFO L85 PathProgramCache]: Analyzing trace with hash 66727088, now seen corresponding path program 1 times [2023-02-17 00:23:17,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:17,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368285536] [2023-02-17 00:23:17,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:17,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:17,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:17,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368285536] [2023-02-17 00:23:17,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368285536] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983733993] [2023-02-17 00:23:17,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,256 INFO L87 Difference]: Start difference. First operand 131 states and 231 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:17,269 INFO L93 Difference]: Finished difference Result 198 states and 346 transitions. [2023-02-17 00:23:17,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:17,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-02-17 00:23:17,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:17,271 INFO L225 Difference]: With dead ends: 198 [2023-02-17 00:23:17,271 INFO L226 Difference]: Without dead ends: 135 [2023-02-17 00:23:17,272 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 [2023-02-17 00:23:17,273 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 49 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:17,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 156 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:17,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-02-17 00:23:17,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2023-02-17 00:23:17,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.75) internal successors, (231), 132 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 231 transitions. [2023-02-17 00:23:17,283 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 231 transitions. Word has length 19 [2023-02-17 00:23:17,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:17,283 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 231 transitions. [2023-02-17 00:23:17,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 231 transitions. [2023-02-17 00:23:17,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 00:23:17,285 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:17,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:23:17,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 00:23:17,285 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:17,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:17,286 INFO L85 PathProgramCache]: Analyzing trace with hash -944390162, now seen corresponding path program 1 times [2023-02-17 00:23:17,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:17,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468772610] [2023-02-17 00:23:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:17,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:17,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:17,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468772610] [2023-02-17 00:23:17,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468772610] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679970834] [2023-02-17 00:23:17,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,327 INFO L87 Difference]: Start difference. First operand 133 states and 231 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:17,345 INFO L93 Difference]: Finished difference Result 381 states and 665 transitions. [2023-02-17 00:23:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:17,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-02-17 00:23:17,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:17,347 INFO L225 Difference]: With dead ends: 381 [2023-02-17 00:23:17,347 INFO L226 Difference]: Without dead ends: 255 [2023-02-17 00:23:17,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,349 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 47 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:17,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 127 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:17,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-02-17 00:23:17,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2023-02-17 00:23:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.7261904761904763) internal successors, (435), 252 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 435 transitions. [2023-02-17 00:23:17,366 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 435 transitions. Word has length 19 [2023-02-17 00:23:17,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:17,366 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 435 transitions. [2023-02-17 00:23:17,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,366 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 435 transitions. [2023-02-17 00:23:17,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 00:23:17,367 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:17,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:23:17,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 00:23:17,368 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:17,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:17,369 INFO L85 PathProgramCache]: Analyzing trace with hash -357584148, now seen corresponding path program 1 times [2023-02-17 00:23:17,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:17,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520180423] [2023-02-17 00:23:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:17,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:17,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520180423] [2023-02-17 00:23:17,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520180423] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512483385] [2023-02-17 00:23:17,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,395 INFO L87 Difference]: Start difference. First operand 253 states and 435 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:17,408 INFO L93 Difference]: Finished difference Result 321 states and 557 transitions. [2023-02-17 00:23:17,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:17,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2023-02-17 00:23:17,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:17,410 INFO L225 Difference]: With dead ends: 321 [2023-02-17 00:23:17,410 INFO L226 Difference]: Without dead ends: 319 [2023-02-17 00:23:17,410 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 [2023-02-17 00:23:17,411 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 42 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:17,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 170 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:17,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2023-02-17 00:23:17,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 253. [2023-02-17 00:23:17,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.7103174603174602) internal successors, (431), 252 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 431 transitions. [2023-02-17 00:23:17,426 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 431 transitions. Word has length 19 [2023-02-17 00:23:17,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:17,426 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 431 transitions. [2023-02-17 00:23:17,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,426 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 431 transitions. [2023-02-17 00:23:17,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 00:23:17,427 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:17,428 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] [2023-02-17 00:23:17,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 00:23:17,428 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:17,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:17,437 INFO L85 PathProgramCache]: Analyzing trace with hash 788890080, now seen corresponding path program 1 times [2023-02-17 00:23:17,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:17,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411474180] [2023-02-17 00:23:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:17,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411474180] [2023-02-17 00:23:17,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411474180] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186351792] [2023-02-17 00:23:17,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,464 INFO L87 Difference]: Start difference. First operand 253 states and 431 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:17,479 INFO L93 Difference]: Finished difference Result 469 states and 809 transitions. [2023-02-17 00:23:17,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:17,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-02-17 00:23:17,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:17,482 INFO L225 Difference]: With dead ends: 469 [2023-02-17 00:23:17,482 INFO L226 Difference]: Without dead ends: 467 [2023-02-17 00:23:17,482 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 [2023-02-17 00:23:17,483 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 39 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:17,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 121 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:17,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-02-17 00:23:17,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 353. [2023-02-17 00:23:17,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.6789772727272727) internal successors, (591), 352 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 591 transitions. [2023-02-17 00:23:17,498 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 591 transitions. Word has length 20 [2023-02-17 00:23:17,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:17,498 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 591 transitions. [2023-02-17 00:23:17,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 591 transitions. [2023-02-17 00:23:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-17 00:23:17,500 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:17,500 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] [2023-02-17 00:23:17,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-17 00:23:17,501 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:17,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:17,502 INFO L85 PathProgramCache]: Analyzing trace with hash 202084066, now seen corresponding path program 1 times [2023-02-17 00:23:17,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:17,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263100820] [2023-02-17 00:23:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:17,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:17,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:17,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:17,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263100820] [2023-02-17 00:23:17,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263100820] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136861539] [2023-02-17 00:23:17,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,526 INFO L87 Difference]: Start difference. First operand 353 states and 591 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:17,540 INFO L93 Difference]: Finished difference Result 837 states and 1409 transitions. [2023-02-17 00:23:17,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:17,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-02-17 00:23:17,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:17,543 INFO L225 Difference]: With dead ends: 837 [2023-02-17 00:23:17,543 INFO L226 Difference]: Without dead ends: 491 [2023-02-17 00:23:17,544 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 [2023-02-17 00:23:17,545 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 45 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:17,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 146 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:17,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-02-17 00:23:17,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 489. [2023-02-17 00:23:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.6618852459016393) internal successors, (811), 488 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 811 transitions. [2023-02-17 00:23:17,568 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 811 transitions. Word has length 20 [2023-02-17 00:23:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:17,568 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 811 transitions. [2023-02-17 00:23:17,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 811 transitions. [2023-02-17 00:23:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 00:23:17,574 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:17,575 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] [2023-02-17 00:23:17,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-17 00:23:17,575 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:17,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:17,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1313996925, now seen corresponding path program 1 times [2023-02-17 00:23:17,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:17,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616735135] [2023-02-17 00:23:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:17,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:17,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616735135] [2023-02-17 00:23:17,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616735135] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115538884] [2023-02-17 00:23:17,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,627 INFO L87 Difference]: Start difference. First operand 489 states and 811 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:17,647 INFO L93 Difference]: Finished difference Result 741 states and 1225 transitions. [2023-02-17 00:23:17,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:17,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-02-17 00:23:17,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:17,650 INFO L225 Difference]: With dead ends: 741 [2023-02-17 00:23:17,650 INFO L226 Difference]: Without dead ends: 503 [2023-02-17 00:23:17,651 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 [2023-02-17 00:23:17,654 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 47 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:17,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 148 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:17,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-02-17 00:23:17,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2023-02-17 00:23:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.638) internal successors, (819), 500 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 819 transitions. [2023-02-17 00:23:17,668 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 819 transitions. Word has length 21 [2023-02-17 00:23:17,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:17,670 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 819 transitions. [2023-02-17 00:23:17,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,673 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 819 transitions. [2023-02-17 00:23:17,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 00:23:17,674 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:17,674 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] [2023-02-17 00:23:17,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-17 00:23:17,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:17,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:17,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1969853121, now seen corresponding path program 1 times [2023-02-17 00:23:17,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:17,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679256650] [2023-02-17 00:23:17,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:17,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:17,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679256650] [2023-02-17 00:23:17,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679256650] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017370962] [2023-02-17 00:23:17,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,701 INFO L87 Difference]: Start difference. First operand 501 states and 819 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:17,723 INFO L93 Difference]: Finished difference Result 905 states and 1501 transitions. [2023-02-17 00:23:17,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:17,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-02-17 00:23:17,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:17,727 INFO L225 Difference]: With dead ends: 905 [2023-02-17 00:23:17,727 INFO L226 Difference]: Without dead ends: 903 [2023-02-17 00:23:17,727 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 [2023-02-17 00:23:17,728 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 36 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:17,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 119 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:17,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2023-02-17 00:23:17,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 709. [2023-02-17 00:23:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 1.597457627118644) internal successors, (1131), 708 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1131 transitions. [2023-02-17 00:23:17,746 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1131 transitions. Word has length 21 [2023-02-17 00:23:17,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:17,747 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 1131 transitions. [2023-02-17 00:23:17,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,747 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1131 transitions. [2023-02-17 00:23:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 00:23:17,749 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:17,749 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] [2023-02-17 00:23:17,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-17 00:23:17,750 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:17,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1383047107, now seen corresponding path program 1 times [2023-02-17 00:23:17,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:17,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199414195] [2023-02-17 00:23:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:17,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:17,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199414195] [2023-02-17 00:23:17,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199414195] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769568575] [2023-02-17 00:23:17,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,783 INFO L87 Difference]: Start difference. First operand 709 states and 1131 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:17,809 INFO L93 Difference]: Finished difference Result 1657 states and 2653 transitions. [2023-02-17 00:23:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:17,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-02-17 00:23:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:17,813 INFO L225 Difference]: With dead ends: 1657 [2023-02-17 00:23:17,813 INFO L226 Difference]: Without dead ends: 967 [2023-02-17 00:23:17,814 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 [2023-02-17 00:23:17,816 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 44 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:17,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 147 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:17,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2023-02-17 00:23:17,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 965. [2023-02-17 00:23:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 964 states have (on average 1.579875518672199) internal successors, (1523), 964 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1523 transitions. [2023-02-17 00:23:17,849 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1523 transitions. Word has length 21 [2023-02-17 00:23:17,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:17,850 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 1523 transitions. [2023-02-17 00:23:17,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,850 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1523 transitions. [2023-02-17 00:23:17,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-17 00:23:17,852 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:17,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:23:17,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-17 00:23:17,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:17,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash 936119319, now seen corresponding path program 1 times [2023-02-17 00:23:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:17,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373579746] [2023-02-17 00:23:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:17,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:17,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373579746] [2023-02-17 00:23:17,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373579746] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005785978] [2023-02-17 00:23:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,896 INFO L87 Difference]: Start difference. First operand 965 states and 1523 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:17,921 INFO L93 Difference]: Finished difference Result 1449 states and 2277 transitions. [2023-02-17 00:23:17,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:17,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-17 00:23:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:17,927 INFO L225 Difference]: With dead ends: 1449 [2023-02-17 00:23:17,928 INFO L226 Difference]: Without dead ends: 983 [2023-02-17 00:23:17,928 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 [2023-02-17 00:23:17,930 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 46 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:17,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 144 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:17,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2023-02-17 00:23:17,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 981. [2023-02-17 00:23:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 980 states have (on average 1.5540816326530613) internal successors, (1523), 980 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1523 transitions. [2023-02-17 00:23:17,955 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1523 transitions. Word has length 22 [2023-02-17 00:23:17,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:17,955 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1523 transitions. [2023-02-17 00:23:17,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:17,956 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1523 transitions. [2023-02-17 00:23:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-17 00:23:17,957 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:17,957 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] [2023-02-17 00:23:17,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-17 00:23:17,958 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:17,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:17,958 INFO L85 PathProgramCache]: Analyzing trace with hash -74997931, now seen corresponding path program 1 times [2023-02-17 00:23:17,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:17,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517295705] [2023-02-17 00:23:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:17,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:17,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:17,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517295705] [2023-02-17 00:23:17,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517295705] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:17,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:17,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:17,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60740569] [2023-02-17 00:23:17,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:17,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:17,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:17,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:17,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:17,987 INFO L87 Difference]: Start difference. First operand 981 states and 1523 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:18,019 INFO L93 Difference]: Finished difference Result 1737 states and 2741 transitions. [2023-02-17 00:23:18,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:18,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-17 00:23:18,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:18,027 INFO L225 Difference]: With dead ends: 1737 [2023-02-17 00:23:18,027 INFO L226 Difference]: Without dead ends: 1735 [2023-02-17 00:23:18,028 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 [2023-02-17 00:23:18,029 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 33 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:18,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 117 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:18,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2023-02-17 00:23:18,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1413. [2023-02-17 00:23:18,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1412 states have (on average 1.5092067988668556) internal successors, (2131), 1412 states have internal predecessors, (2131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 2131 transitions. [2023-02-17 00:23:18,065 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 2131 transitions. Word has length 22 [2023-02-17 00:23:18,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:18,065 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 2131 transitions. [2023-02-17 00:23:18,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 2131 transitions. [2023-02-17 00:23:18,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-17 00:23:18,068 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:18,068 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] [2023-02-17 00:23:18,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-17 00:23:18,068 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:18,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:18,069 INFO L85 PathProgramCache]: Analyzing trace with hash -661803945, now seen corresponding path program 1 times [2023-02-17 00:23:18,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:18,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724530452] [2023-02-17 00:23:18,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:18,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:18,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:18,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724530452] [2023-02-17 00:23:18,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724530452] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:18,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:18,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:18,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804896220] [2023-02-17 00:23:18,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:18,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:18,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:18,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:18,086 INFO L87 Difference]: Start difference. First operand 1413 states and 2131 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:18,133 INFO L93 Difference]: Finished difference Result 3273 states and 4949 transitions. [2023-02-17 00:23:18,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:18,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-02-17 00:23:18,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:18,139 INFO L225 Difference]: With dead ends: 3273 [2023-02-17 00:23:18,139 INFO L226 Difference]: Without dead ends: 1895 [2023-02-17 00:23:18,140 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 [2023-02-17 00:23:18,141 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 43 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:18,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 148 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:18,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2023-02-17 00:23:18,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1893. [2023-02-17 00:23:18,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1893 states, 1892 states have (on average 1.4899577167019027) internal successors, (2819), 1892 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2819 transitions. [2023-02-17 00:23:18,188 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2819 transitions. Word has length 22 [2023-02-17 00:23:18,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:18,188 INFO L495 AbstractCegarLoop]: Abstraction has 1893 states and 2819 transitions. [2023-02-17 00:23:18,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2819 transitions. [2023-02-17 00:23:18,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 00:23:18,190 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:18,190 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] [2023-02-17 00:23:18,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-17 00:23:18,191 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:18,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1970246488, now seen corresponding path program 1 times [2023-02-17 00:23:18,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:18,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959271513] [2023-02-17 00:23:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:18,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:18,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:18,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959271513] [2023-02-17 00:23:18,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959271513] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:18,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:18,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:18,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60909150] [2023-02-17 00:23:18,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:18,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:18,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:18,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:18,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:18,208 INFO L87 Difference]: Start difference. First operand 1893 states and 2819 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:18,241 INFO L93 Difference]: Finished difference Result 2841 states and 4213 transitions. [2023-02-17 00:23:18,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:18,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-02-17 00:23:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:18,247 INFO L225 Difference]: With dead ends: 2841 [2023-02-17 00:23:18,248 INFO L226 Difference]: Without dead ends: 1927 [2023-02-17 00:23:18,249 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 [2023-02-17 00:23:18,249 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 45 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:18,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 140 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:18,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1927 states. [2023-02-17 00:23:18,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1927 to 1925. [2023-02-17 00:23:18,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1925 states, 1924 states have (on average 1.4651767151767152) internal successors, (2819), 1924 states have internal predecessors, (2819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1925 states to 1925 states and 2819 transitions. [2023-02-17 00:23:18,299 INFO L78 Accepts]: Start accepts. Automaton has 1925 states and 2819 transitions. Word has length 23 [2023-02-17 00:23:18,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:18,299 INFO L495 AbstractCegarLoop]: Abstraction has 1925 states and 2819 transitions. [2023-02-17 00:23:18,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1925 states and 2819 transitions. [2023-02-17 00:23:18,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 00:23:18,301 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:18,301 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] [2023-02-17 00:23:18,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-17 00:23:18,301 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:18,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:18,302 INFO L85 PathProgramCache]: Analyzing trace with hash 959129238, now seen corresponding path program 1 times [2023-02-17 00:23:18,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:18,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927230540] [2023-02-17 00:23:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:18,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:18,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:18,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927230540] [2023-02-17 00:23:18,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927230540] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:18,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:18,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:18,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687765232] [2023-02-17 00:23:18,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:18,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:18,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:18,318 INFO L87 Difference]: Start difference. First operand 1925 states and 2819 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:18,368 INFO L93 Difference]: Finished difference Result 3337 states and 4965 transitions. [2023-02-17 00:23:18,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:18,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-02-17 00:23:18,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:18,378 INFO L225 Difference]: With dead ends: 3337 [2023-02-17 00:23:18,378 INFO L226 Difference]: Without dead ends: 3335 [2023-02-17 00:23:18,379 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 [2023-02-17 00:23:18,379 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 30 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:18,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 115 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:18,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3335 states. [2023-02-17 00:23:18,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3335 to 2821. [2023-02-17 00:23:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 2820 states have (on average 1.4195035460992909) internal successors, (4003), 2820 states have internal predecessors, (4003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4003 transitions. [2023-02-17 00:23:18,464 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4003 transitions. Word has length 23 [2023-02-17 00:23:18,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:18,464 INFO L495 AbstractCegarLoop]: Abstraction has 2821 states and 4003 transitions. [2023-02-17 00:23:18,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4003 transitions. [2023-02-17 00:23:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 00:23:18,468 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:18,468 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] [2023-02-17 00:23:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-17 00:23:18,468 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:18,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash 372323224, now seen corresponding path program 1 times [2023-02-17 00:23:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:18,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127814375] [2023-02-17 00:23:18,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:18,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:18,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:18,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:18,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127814375] [2023-02-17 00:23:18,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127814375] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:18,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:18,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:18,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111267183] [2023-02-17 00:23:18,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:18,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:18,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:18,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:18,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:18,484 INFO L87 Difference]: Start difference. First operand 2821 states and 4003 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:18,545 INFO L93 Difference]: Finished difference Result 6473 states and 9189 transitions. [2023-02-17 00:23:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:18,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-02-17 00:23:18,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:18,557 INFO L225 Difference]: With dead ends: 6473 [2023-02-17 00:23:18,557 INFO L226 Difference]: Without dead ends: 3719 [2023-02-17 00:23:18,560 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 [2023-02-17 00:23:18,560 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 42 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:18,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 149 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:18,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2023-02-17 00:23:18,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3717. [2023-02-17 00:23:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3717 states, 3716 states have (on average 1.3958557588805167) internal successors, (5187), 3716 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3717 states to 3717 states and 5187 transitions. [2023-02-17 00:23:18,660 INFO L78 Accepts]: Start accepts. Automaton has 3717 states and 5187 transitions. Word has length 23 [2023-02-17 00:23:18,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:18,660 INFO L495 AbstractCegarLoop]: Abstraction has 3717 states and 5187 transitions. [2023-02-17 00:23:18,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3717 states and 5187 transitions. [2023-02-17 00:23:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 00:23:18,664 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:18,664 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] [2023-02-17 00:23:18,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-17 00:23:18,664 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:18,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:18,665 INFO L85 PathProgramCache]: Analyzing trace with hash -331549300, now seen corresponding path program 1 times [2023-02-17 00:23:18,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:18,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654474724] [2023-02-17 00:23:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:18,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:18,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:18,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654474724] [2023-02-17 00:23:18,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654474724] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:18,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:18,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:18,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784493710] [2023-02-17 00:23:18,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:18,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:18,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:18,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:18,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:18,687 INFO L87 Difference]: Start difference. First operand 3717 states and 5187 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:18,772 INFO L93 Difference]: Finished difference Result 5577 states and 7749 transitions. [2023-02-17 00:23:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:18,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-17 00:23:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:18,784 INFO L225 Difference]: With dead ends: 5577 [2023-02-17 00:23:18,784 INFO L226 Difference]: Without dead ends: 3783 [2023-02-17 00:23:18,787 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 [2023-02-17 00:23:18,788 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 44 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:18,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 136 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:18,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2023-02-17 00:23:18,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3781. [2023-02-17 00:23:18,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3781 states, 3780 states have (on average 1.3722222222222222) internal successors, (5187), 3780 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3781 states to 3781 states and 5187 transitions. [2023-02-17 00:23:18,890 INFO L78 Accepts]: Start accepts. Automaton has 3781 states and 5187 transitions. Word has length 24 [2023-02-17 00:23:18,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:18,890 INFO L495 AbstractCegarLoop]: Abstraction has 3781 states and 5187 transitions. [2023-02-17 00:23:18,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3781 states and 5187 transitions. [2023-02-17 00:23:18,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 00:23:18,895 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:18,895 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] [2023-02-17 00:23:18,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-17 00:23:18,896 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:18,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:18,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1342666550, now seen corresponding path program 1 times [2023-02-17 00:23:18,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:18,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677916219] [2023-02-17 00:23:18,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:18,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:18,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:18,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:18,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677916219] [2023-02-17 00:23:18,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677916219] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:18,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:18,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:18,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283331767] [2023-02-17 00:23:18,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:18,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:18,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:18,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:18,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:18,914 INFO L87 Difference]: Start difference. First operand 3781 states and 5187 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:18,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:18,999 INFO L93 Difference]: Finished difference Result 6409 states and 8901 transitions. [2023-02-17 00:23:19,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:19,000 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-17 00:23:19,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:19,031 INFO L225 Difference]: With dead ends: 6409 [2023-02-17 00:23:19,031 INFO L226 Difference]: Without dead ends: 6407 [2023-02-17 00:23:19,033 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 [2023-02-17 00:23:19,034 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 27 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:19,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 113 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:19,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6407 states. [2023-02-17 00:23:19,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6407 to 5637. [2023-02-17 00:23:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5637 states, 5636 states have (on average 1.3291341376863024) internal successors, (7491), 5636 states have internal predecessors, (7491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:19,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5637 states to 5637 states and 7491 transitions. [2023-02-17 00:23:19,197 INFO L78 Accepts]: Start accepts. Automaton has 5637 states and 7491 transitions. Word has length 24 [2023-02-17 00:23:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:19,198 INFO L495 AbstractCegarLoop]: Abstraction has 5637 states and 7491 transitions. [2023-02-17 00:23:19,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5637 states and 7491 transitions. [2023-02-17 00:23:19,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-17 00:23:19,205 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:19,205 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] [2023-02-17 00:23:19,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-17 00:23:19,205 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:19,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:19,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1929472564, now seen corresponding path program 1 times [2023-02-17 00:23:19,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:19,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604295473] [2023-02-17 00:23:19,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:19,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:19,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:19,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604295473] [2023-02-17 00:23:19,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604295473] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:19,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:19,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:19,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795303254] [2023-02-17 00:23:19,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:19,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:19,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:19,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:19,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:19,226 INFO L87 Difference]: Start difference. First operand 5637 states and 7491 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:19,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:19,333 INFO L93 Difference]: Finished difference Result 12809 states and 16965 transitions. [2023-02-17 00:23:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:19,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-02-17 00:23:19,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:19,346 INFO L225 Difference]: With dead ends: 12809 [2023-02-17 00:23:19,347 INFO L226 Difference]: Without dead ends: 7303 [2023-02-17 00:23:19,354 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 [2023-02-17 00:23:19,355 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 41 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:19,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 150 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:19,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7303 states. [2023-02-17 00:23:19,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7303 to 7301. [2023-02-17 00:23:19,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7301 states, 7300 states have (on average 1.297945205479452) internal successors, (9475), 7300 states have internal predecessors, (9475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7301 states to 7301 states and 9475 transitions. [2023-02-17 00:23:19,558 INFO L78 Accepts]: Start accepts. Automaton has 7301 states and 9475 transitions. Word has length 24 [2023-02-17 00:23:19,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:19,558 INFO L495 AbstractCegarLoop]: Abstraction has 7301 states and 9475 transitions. [2023-02-17 00:23:19,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:19,559 INFO L276 IsEmpty]: Start isEmpty. Operand 7301 states and 9475 transitions. [2023-02-17 00:23:19,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 00:23:19,565 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:19,566 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] [2023-02-17 00:23:19,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-17 00:23:19,566 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:19,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:19,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1327225645, now seen corresponding path program 1 times [2023-02-17 00:23:19,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:19,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588780527] [2023-02-17 00:23:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:19,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:19,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:19,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588780527] [2023-02-17 00:23:19,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588780527] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:19,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:19,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:19,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499005081] [2023-02-17 00:23:19,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:19,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:19,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:19,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:19,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:19,581 INFO L87 Difference]: Start difference. First operand 7301 states and 9475 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:19,703 INFO L93 Difference]: Finished difference Result 10953 states and 14149 transitions. [2023-02-17 00:23:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:19,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-17 00:23:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:19,716 INFO L225 Difference]: With dead ends: 10953 [2023-02-17 00:23:19,717 INFO L226 Difference]: Without dead ends: 7431 [2023-02-17 00:23:19,721 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 [2023-02-17 00:23:19,722 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 43 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:19,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 132 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:19,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2023-02-17 00:23:19,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7429. [2023-02-17 00:23:19,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7429 states, 7428 states have (on average 1.2755788906838987) internal successors, (9475), 7428 states have internal predecessors, (9475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:19,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7429 states to 7429 states and 9475 transitions. [2023-02-17 00:23:19,885 INFO L78 Accepts]: Start accepts. Automaton has 7429 states and 9475 transitions. Word has length 25 [2023-02-17 00:23:19,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:19,886 INFO L495 AbstractCegarLoop]: Abstraction has 7429 states and 9475 transitions. [2023-02-17 00:23:19,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:19,886 INFO L276 IsEmpty]: Start isEmpty. Operand 7429 states and 9475 transitions. [2023-02-17 00:23:19,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 00:23:19,893 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:19,893 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] [2023-02-17 00:23:19,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-17 00:23:19,894 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:19,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:19,894 INFO L85 PathProgramCache]: Analyzing trace with hash 316108395, now seen corresponding path program 1 times [2023-02-17 00:23:19,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:19,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508442963] [2023-02-17 00:23:19,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:19,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:19,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:19,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508442963] [2023-02-17 00:23:19,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508442963] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:19,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:19,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:19,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070623379] [2023-02-17 00:23:19,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:19,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:19,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:19,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:19,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:19,916 INFO L87 Difference]: Start difference. First operand 7429 states and 9475 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:20,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:20,123 INFO L93 Difference]: Finished difference Result 12297 states and 15749 transitions. [2023-02-17 00:23:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:20,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-17 00:23:20,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:20,144 INFO L225 Difference]: With dead ends: 12297 [2023-02-17 00:23:20,144 INFO L226 Difference]: Without dead ends: 12295 [2023-02-17 00:23:20,148 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 [2023-02-17 00:23:20,148 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 24 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:20,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 111 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:20,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12295 states. [2023-02-17 00:23:20,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12295 to 11269. [2023-02-17 00:23:20,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11269 states, 11268 states have (on average 1.238462903798367) internal successors, (13955), 11268 states have internal predecessors, (13955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:20,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11269 states to 11269 states and 13955 transitions. [2023-02-17 00:23:20,386 INFO L78 Accepts]: Start accepts. Automaton has 11269 states and 13955 transitions. Word has length 25 [2023-02-17 00:23:20,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:20,387 INFO L495 AbstractCegarLoop]: Abstraction has 11269 states and 13955 transitions. [2023-02-17 00:23:20,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:20,387 INFO L276 IsEmpty]: Start isEmpty. Operand 11269 states and 13955 transitions. [2023-02-17 00:23:20,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 00:23:20,399 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:20,399 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] [2023-02-17 00:23:20,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-02-17 00:23:20,399 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:20,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -270697619, now seen corresponding path program 1 times [2023-02-17 00:23:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:20,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230068341] [2023-02-17 00:23:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:20,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:20,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:20,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:20,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230068341] [2023-02-17 00:23:20,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230068341] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:20,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:20,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:20,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046856286] [2023-02-17 00:23:20,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:20,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:20,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:20,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:20,424 INFO L87 Difference]: Start difference. First operand 11269 states and 13955 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:20,618 INFO L93 Difference]: Finished difference Result 25353 states and 31109 transitions. [2023-02-17 00:23:20,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:20,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-02-17 00:23:20,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:20,713 INFO L225 Difference]: With dead ends: 25353 [2023-02-17 00:23:20,714 INFO L226 Difference]: Without dead ends: 14343 [2023-02-17 00:23:20,723 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 [2023-02-17 00:23:20,723 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 40 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:20,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 151 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:20,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14343 states. [2023-02-17 00:23:21,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14343 to 14341. [2023-02-17 00:23:21,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14341 states, 14340 states have (on average 1.1963040446304045) internal successors, (17155), 14340 states have internal predecessors, (17155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14341 states to 14341 states and 17155 transitions. [2023-02-17 00:23:21,112 INFO L78 Accepts]: Start accepts. Automaton has 14341 states and 17155 transitions. Word has length 25 [2023-02-17 00:23:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:21,112 INFO L495 AbstractCegarLoop]: Abstraction has 14341 states and 17155 transitions. [2023-02-17 00:23:21,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:21,112 INFO L276 IsEmpty]: Start isEmpty. Operand 14341 states and 17155 transitions. [2023-02-17 00:23:21,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 00:23:21,126 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:21,126 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] [2023-02-17 00:23:21,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-02-17 00:23:21,127 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1209641729, now seen corresponding path program 1 times [2023-02-17 00:23:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:21,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965436684] [2023-02-17 00:23:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:21,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:21,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:21,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:21,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965436684] [2023-02-17 00:23:21,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965436684] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:21,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:21,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:21,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927696515] [2023-02-17 00:23:21,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:21,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:21,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:21,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:21,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:21,144 INFO L87 Difference]: Start difference. First operand 14341 states and 17155 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:21,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:21,328 INFO L93 Difference]: Finished difference Result 21513 states and 25605 transitions. [2023-02-17 00:23:21,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:21,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-02-17 00:23:21,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:21,355 INFO L225 Difference]: With dead ends: 21513 [2023-02-17 00:23:21,355 INFO L226 Difference]: Without dead ends: 14599 [2023-02-17 00:23:21,366 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 [2023-02-17 00:23:21,366 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 42 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:21,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:21,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14599 states. [2023-02-17 00:23:21,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14599 to 14597. [2023-02-17 00:23:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14597 states, 14596 states have (on average 1.175322006029049) internal successors, (17155), 14596 states have internal predecessors, (17155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:21,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14597 states to 14597 states and 17155 transitions. [2023-02-17 00:23:21,776 INFO L78 Accepts]: Start accepts. Automaton has 14597 states and 17155 transitions. Word has length 26 [2023-02-17 00:23:21,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:21,777 INFO L495 AbstractCegarLoop]: Abstraction has 14597 states and 17155 transitions. [2023-02-17 00:23:21,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:21,777 INFO L276 IsEmpty]: Start isEmpty. Operand 14597 states and 17155 transitions. [2023-02-17 00:23:21,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 00:23:21,789 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:21,790 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] [2023-02-17 00:23:21,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-02-17 00:23:21,790 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:21,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash 198524479, now seen corresponding path program 1 times [2023-02-17 00:23:21,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:21,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757105805] [2023-02-17 00:23:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:21,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:21,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:21,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:21,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757105805] [2023-02-17 00:23:21,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757105805] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:21,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:21,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:21,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399162321] [2023-02-17 00:23:21,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:21,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:21,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:21,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:21,808 INFO L87 Difference]: Start difference. First operand 14597 states and 17155 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:22,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:22,203 INFO L93 Difference]: Finished difference Result 23559 states and 27396 transitions. [2023-02-17 00:23:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:22,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-02-17 00:23:22,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:22,242 INFO L225 Difference]: With dead ends: 23559 [2023-02-17 00:23:22,242 INFO L226 Difference]: Without dead ends: 23557 [2023-02-17 00:23:22,246 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 [2023-02-17 00:23:22,247 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 20 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:22,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 108 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:22,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23557 states. [2023-02-17 00:23:22,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23557 to 22533. [2023-02-17 00:23:22,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22533 states, 22532 states have (on average 1.1476566660749157) internal successors, (25859), 22532 states have internal predecessors, (25859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:22,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22533 states to 22533 states and 25859 transitions. [2023-02-17 00:23:22,723 INFO L78 Accepts]: Start accepts. Automaton has 22533 states and 25859 transitions. Word has length 26 [2023-02-17 00:23:22,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:22,723 INFO L495 AbstractCegarLoop]: Abstraction has 22533 states and 25859 transitions. [2023-02-17 00:23:22,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:22,723 INFO L276 IsEmpty]: Start isEmpty. Operand 22533 states and 25859 transitions. [2023-02-17 00:23:22,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-17 00:23:22,744 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:22,744 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] [2023-02-17 00:23:22,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-02-17 00:23:22,744 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:22,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash -388281535, now seen corresponding path program 1 times [2023-02-17 00:23:22,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:23:22,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649693884] [2023-02-17 00:23:22,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:23:22,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:23:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:23:22,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:22,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:23:22,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649693884] [2023-02-17 00:23:22,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649693884] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:23:22,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:23:22,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:23:22,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196414775] [2023-02-17 00:23:22,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:23:22,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:23:22,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:23:22,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:23:22,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:23:22,764 INFO L87 Difference]: Start difference. First operand 22533 states and 25859 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:23,081 INFO L93 Difference]: Finished difference Result 50181 states and 56579 transitions. [2023-02-17 00:23:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:23:23,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-02-17 00:23:23,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:23,083 INFO L225 Difference]: With dead ends: 50181 [2023-02-17 00:23:23,083 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 00:23:23,110 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 [2023-02-17 00:23:23,111 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 38 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:23,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 150 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:23:23,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 00:23:23,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 00:23:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:23,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 00:23:23,112 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2023-02-17 00:23:23,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:23,112 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 00:23:23,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:23:23,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 00:23:23,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 00:23:23,115 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 00:23:23,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-02-17 00:23:23,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 00:23:23,124 INFO L899 garLoopResultBuilder]: For program point L126(line 126) no Hoare annotation was computed. [2023-02-17 00:23:23,125 INFO L899 garLoopResultBuilder]: For program point L151(line 151) no Hoare annotation was computed. [2023-02-17 00:23:23,125 INFO L899 garLoopResultBuilder]: For program point L110-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,125 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 6 165) the Hoare annotation is: true [2023-02-17 00:23:23,125 INFO L899 garLoopResultBuilder]: For program point L135-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,125 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 00:23:23,125 INFO L899 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2023-02-17 00:23:23,125 INFO L899 garLoopResultBuilder]: For program point L136(line 136) no Hoare annotation was computed. [2023-02-17 00:23:23,126 INFO L902 garLoopResultBuilder]: At program point L161(lines 7 165) the Hoare annotation is: true [2023-02-17 00:23:23,126 INFO L899 garLoopResultBuilder]: For program point L120-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,126 INFO L899 garLoopResultBuilder]: For program point L145-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,126 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 00:23:23,126 INFO L899 garLoopResultBuilder]: For program point L104-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,126 INFO L899 garLoopResultBuilder]: For program point L96-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,126 INFO L899 garLoopResultBuilder]: For program point L121(line 121) no Hoare annotation was computed. [2023-02-17 00:23:23,127 INFO L899 garLoopResultBuilder]: For program point L88-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,127 INFO L899 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2023-02-17 00:23:23,127 INFO L899 garLoopResultBuilder]: For program point L80-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,127 INFO L899 garLoopResultBuilder]: For program point L72-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,127 INFO L899 garLoopResultBuilder]: For program point L130-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,127 INFO L902 garLoopResultBuilder]: At program point L155-1(lines 41 160) the Hoare annotation is: true [2023-02-17 00:23:23,127 INFO L899 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2023-02-17 00:23:23,128 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 00:23:23,128 INFO L899 garLoopResultBuilder]: For program point L156(line 156) no Hoare annotation was computed. [2023-02-17 00:23:23,128 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 163) no Hoare annotation was computed. [2023-02-17 00:23:23,128 INFO L899 garLoopResultBuilder]: For program point L115-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,128 INFO L899 garLoopResultBuilder]: For program point L140-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,128 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 00:23:23,128 INFO L899 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2023-02-17 00:23:23,129 INFO L899 garLoopResultBuilder]: For program point L141(line 141) no Hoare annotation was computed. [2023-02-17 00:23:23,129 INFO L899 garLoopResultBuilder]: For program point L100-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,129 INFO L899 garLoopResultBuilder]: For program point L125-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,129 INFO L899 garLoopResultBuilder]: For program point L92-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,129 INFO L895 garLoopResultBuilder]: At program point main_ERROR#1(lines 7 165) the Hoare annotation is: false [2023-02-17 00:23:23,129 INFO L899 garLoopResultBuilder]: For program point L150-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,129 INFO L899 garLoopResultBuilder]: For program point L84-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,130 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2023-02-17 00:23:23,130 INFO L899 garLoopResultBuilder]: For program point L76-1(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,130 INFO L899 garLoopResultBuilder]: For program point L68(lines 68 70) no Hoare annotation was computed. [2023-02-17 00:23:23,130 INFO L899 garLoopResultBuilder]: For program point L68-2(lines 41 160) no Hoare annotation was computed. [2023-02-17 00:23:23,133 INFO L445 BasicCegarLoop]: Path program 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] [2023-02-17 00:23:23,135 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 00:23:23,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 12:23:23 BoogieIcfgContainer [2023-02-17 00:23:23,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 00:23:23,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 00:23:23,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 00:23:23,143 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 00:23:23,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:23:16" (3/4) ... [2023-02-17 00:23:23,145 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 00:23:23,157 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-02-17 00:23:23,157 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 00:23:23,158 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 00:23:23,158 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 00:23:23,201 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 00:23:23,201 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 00:23:23,202 INFO L158 Benchmark]: Toolchain (without parser) took 7405.59ms. Allocated memory was 138.4MB in the beginning and 750.8MB in the end (delta: 612.4MB). Free memory was 92.6MB in the beginning and 240.6MB in the end (delta: -148.0MB). Peak memory consumption was 466.5MB. Max. memory is 16.1GB. [2023-02-17 00:23:23,202 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 109.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 00:23:23,202 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.71ms. Allocated memory is still 138.4MB. Free memory was 92.1MB in the beginning and 81.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 00:23:23,202 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.44ms. Allocated memory is still 138.4MB. Free memory was 81.2MB in the beginning and 79.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 00:23:23,203 INFO L158 Benchmark]: Boogie Preprocessor took 21.46ms. Allocated memory is still 138.4MB. Free memory was 79.6MB in the beginning and 78.6MB in the end (delta: 974.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 00:23:23,205 INFO L158 Benchmark]: RCFGBuilder took 267.11ms. Allocated memory is still 138.4MB. Free memory was 78.1MB in the beginning and 65.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-17 00:23:23,205 INFO L158 Benchmark]: TraceAbstraction took 6799.23ms. Allocated memory was 138.4MB in the beginning and 750.8MB in the end (delta: 612.4MB). Free memory was 64.4MB in the beginning and 244.8MB in the end (delta: -180.4MB). Peak memory consumption was 435.1MB. Max. memory is 16.1GB. [2023-02-17 00:23:23,205 INFO L158 Benchmark]: Witness Printer took 58.95ms. Allocated memory is still 750.8MB. Free memory was 244.8MB in the beginning and 240.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-17 00:23:23,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 138.4MB. Free memory is still 109.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 225.71ms. Allocated memory is still 138.4MB. Free memory was 92.1MB in the beginning and 81.2MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.44ms. Allocated memory is still 138.4MB. Free memory was 81.2MB in the beginning and 79.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.46ms. Allocated memory is still 138.4MB. Free memory was 79.6MB in the beginning and 78.6MB in the end (delta: 974.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 267.11ms. Allocated memory is still 138.4MB. Free memory was 78.1MB in the beginning and 65.0MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6799.23ms. Allocated memory was 138.4MB in the beginning and 750.8MB in the end (delta: 612.4MB). Free memory was 64.4MB in the beginning and 244.8MB in the end (delta: -180.4MB). Peak memory consumption was 435.1MB. Max. memory is 16.1GB. * Witness Printer took 58.95ms. Allocated memory is still 750.8MB. Free memory was 244.8MB in the beginning and 240.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 163]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.7s, OverallIterations: 28, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1149 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1149 mSDsluCounter, 3837 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1533 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 149 IncrementalHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 2304 mSDtfsCounter, 149 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22533occurred in iteration=27, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 28 MinimizatonAttempts, 4124 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 1033 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 608 NumberOfCodeBlocks, 608 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 580 ConstructedInterpolants, 0 QuantifiedInterpolants, 1240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-17 00:23:23,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE