./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.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 7889f6823684efa4d90d392ed393927ee5c2d2eb45f6dbf47b7c030213ef334f --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 20:48:11,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 20:48:11,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 20:48:11,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 20:48:11,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 20:48:11,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 20:48:11,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 20:48:11,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 20:48:11,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 20:48:11,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 20:48:11,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 20:48:11,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 20:48:11,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 20:48:11,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 20:48:11,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 20:48:11,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 20:48:11,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 20:48:11,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 20:48:11,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 20:48:11,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 20:48:11,113 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 20:48:11,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 20:48:11,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 20:48:11,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 20:48:11,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 20:48:11,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 20:48:11,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 20:48:11,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 20:48:11,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 20:48:11,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 20:48:11,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 20:48:11,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 20:48:11,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 20:48:11,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 20:48:11,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 20:48:11,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 20:48:11,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 20:48:11,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 20:48:11,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 20:48:11,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 20:48:11,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 20:48:11,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 20:48:11,131 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 20:48:11,155 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 20:48:11,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 20:48:11,156 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 20:48:11,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 20:48:11,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 20:48:11,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 20:48:11,157 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 20:48:11,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 20:48:11,158 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 20:48:11,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 20:48:11,159 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 20:48:11,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 20:48:11,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 20:48:11,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 20:48:11,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 20:48:11,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 20:48:11,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 20:48:11,160 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 20:48:11,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 20:48:11,160 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 20:48:11,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 20:48:11,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 20:48:11,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 20:48:11,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 20:48:11,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:48:11,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 20:48:11,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 20:48:11,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 20:48:11,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 20:48:11,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 20:48:11,162 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 20:48:11,162 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 20:48:11,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 20:48:11,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7889f6823684efa4d90d392ed393927ee5c2d2eb45f6dbf47b7c030213ef334f [2022-07-22 20:48:11,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 20:48:11,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 20:48:11,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 20:48:11,393 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 20:48:11,393 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 20:48:11,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2022-07-22 20:48:11,451 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef9d28c67/15521b04f5c74be8adcb76aac28dc1ed/FLAG09c096504 [2022-07-22 20:48:11,856 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 20:48:11,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2022-07-22 20:48:11,872 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef9d28c67/15521b04f5c74be8adcb76aac28dc1ed/FLAG09c096504 [2022-07-22 20:48:11,884 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef9d28c67/15521b04f5c74be8adcb76aac28dc1ed [2022-07-22 20:48:11,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 20:48:11,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 20:48:11,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 20:48:11,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 20:48:11,890 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 20:48:11,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:48:11" (1/1) ... [2022-07-22 20:48:11,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60fa8794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:11, skipping insertion in model container [2022-07-22 20:48:11,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 08:48:11" (1/1) ... [2022-07-22 20:48:11,896 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 20:48:11,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 20:48:12,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[914,927] [2022-07-22 20:48:12,084 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[7115,7128] [2022-07-22 20:48:12,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:48:12,149 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 20:48:12,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[914,927] [2022-07-22 20:48:12,171 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.08.cil-1.c[7115,7128] [2022-07-22 20:48:12,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 20:48:12,212 INFO L208 MainTranslator]: Completed translation [2022-07-22 20:48:12,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:12 WrapperNode [2022-07-22 20:48:12,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 20:48:12,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 20:48:12,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 20:48:12,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 20:48:12,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:12" (1/1) ... [2022-07-22 20:48:12,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:12" (1/1) ... [2022-07-22 20:48:12,280 INFO L137 Inliner]: procedures = 69, calls = 81, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 808 [2022-07-22 20:48:12,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 20:48:12,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 20:48:12,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 20:48:12,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 20:48:12,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:12" (1/1) ... [2022-07-22 20:48:12,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:12" (1/1) ... [2022-07-22 20:48:12,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:12" (1/1) ... [2022-07-22 20:48:12,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:12" (1/1) ... [2022-07-22 20:48:12,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:12" (1/1) ... [2022-07-22 20:48:12,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:12" (1/1) ... [2022-07-22 20:48:12,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:12" (1/1) ... [2022-07-22 20:48:12,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 20:48:12,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 20:48:12,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 20:48:12,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 20:48:12,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:12" (1/1) ... [2022-07-22 20:48:12,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 20:48:12,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:48:12,382 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 20:48:12,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 20:48:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 20:48:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-22 20:48:12,419 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-22 20:48:12,419 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-22 20:48:12,419 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-22 20:48:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-22 20:48:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-22 20:48:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-22 20:48:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-22 20:48:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-22 20:48:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-22 20:48:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-22 20:48:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-22 20:48:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-22 20:48:12,421 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-22 20:48:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-22 20:48:12,421 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-22 20:48:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-22 20:48:12,421 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-22 20:48:12,421 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-22 20:48:12,422 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-22 20:48:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-22 20:48:12,422 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-22 20:48:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 20:48:12,422 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-22 20:48:12,422 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-22 20:48:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-22 20:48:12,423 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-22 20:48:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 20:48:12,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 20:48:12,423 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-22 20:48:12,423 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-22 20:48:12,506 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 20:48:12,507 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 20:48:13,111 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 20:48:13,123 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 20:48:13,123 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-22 20:48:13,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:48:13 BoogieIcfgContainer [2022-07-22 20:48:13,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 20:48:13,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 20:48:13,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 20:48:13,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 20:48:13,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 08:48:11" (1/3) ... [2022-07-22 20:48:13,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d73cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:48:13, skipping insertion in model container [2022-07-22 20:48:13,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 08:48:12" (2/3) ... [2022-07-22 20:48:13,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d73cb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 08:48:13, skipping insertion in model container [2022-07-22 20:48:13,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 08:48:13" (3/3) ... [2022-07-22 20:48:13,134 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.08.cil-1.c [2022-07-22 20:48:13,145 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 20:48:13,145 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 20:48:13,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 20:48:13,208 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@359d84bc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a711c75 [2022-07-22 20:48:13,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 20:48:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 383 states, 330 states have (on average 1.621212121212121) internal successors, (535), 336 states have internal predecessors, (535), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-22 20:48:13,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:13,232 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:13,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:13,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:13,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:13,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1589538386, now seen corresponding path program 1 times [2022-07-22 20:48:13,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:13,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753732677] [2022-07-22 20:48:13,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:13,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:13,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:13,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:13,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:13,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:13,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:13,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:13,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753732677] [2022-07-22 20:48:13,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753732677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:13,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:13,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:48:13,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972883372] [2022-07-22 20:48:13,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:13,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:48:13,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:13,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:48:13,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:13,555 INFO L87 Difference]: Start difference. First operand has 383 states, 330 states have (on average 1.621212121212121) internal successors, (535), 336 states have internal predecessors, (535), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:14,323 INFO L93 Difference]: Finished difference Result 877 states and 1380 transitions. [2022-07-22 20:48:14,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:48:14,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:48:14,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:14,335 INFO L225 Difference]: With dead ends: 877 [2022-07-22 20:48:14,335 INFO L226 Difference]: Without dead ends: 508 [2022-07-22 20:48:14,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:48:14,341 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 1232 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:14,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 1644 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:48:14,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-07-22 20:48:14,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 469. [2022-07-22 20:48:14,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 398 states have (on average 1.5025125628140703) internal successors, (598), 404 states have internal predecessors, (598), 47 states have call successors, (47), 21 states have call predecessors, (47), 22 states have return successors, (50), 46 states have call predecessors, (50), 45 states have call successors, (50) [2022-07-22 20:48:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 695 transitions. [2022-07-22 20:48:14,394 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 695 transitions. Word has length 65 [2022-07-22 20:48:14,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:14,395 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 695 transitions. [2022-07-22 20:48:14,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 695 transitions. [2022-07-22 20:48:14,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:14,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:14,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:14,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 20:48:14,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:14,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:14,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1026540270, now seen corresponding path program 1 times [2022-07-22 20:48:14,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:14,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768249818] [2022-07-22 20:48:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:14,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:14,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:14,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768249818] [2022-07-22 20:48:14,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768249818] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:14,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:14,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:48:14,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961472497] [2022-07-22 20:48:14,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:14,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:48:14,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:14,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:48:14,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:14,485 INFO L87 Difference]: Start difference. First operand 469 states and 695 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:15,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:15,415 INFO L93 Difference]: Finished difference Result 816 states and 1172 transitions. [2022-07-22 20:48:15,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 20:48:15,416 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:48:15,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:15,419 INFO L225 Difference]: With dead ends: 816 [2022-07-22 20:48:15,419 INFO L226 Difference]: Without dead ends: 639 [2022-07-22 20:48:15,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-22 20:48:15,421 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 1115 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:15,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1143 Valid, 2146 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:48:15,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-07-22 20:48:15,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 565. [2022-07-22 20:48:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 474 states have (on average 1.481012658227848) internal successors, (702), 482 states have internal predecessors, (702), 58 states have call successors, (58), 28 states have call predecessors, (58), 31 states have return successors, (69), 58 states have call predecessors, (69), 56 states have call successors, (69) [2022-07-22 20:48:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 829 transitions. [2022-07-22 20:48:15,452 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 829 transitions. Word has length 65 [2022-07-22 20:48:15,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:15,452 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 829 transitions. [2022-07-22 20:48:15,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 829 transitions. [2022-07-22 20:48:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:15,455 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:15,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:15,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 20:48:15,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:15,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:15,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1239840916, now seen corresponding path program 1 times [2022-07-22 20:48:15,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:15,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944991285] [2022-07-22 20:48:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:15,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:15,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:15,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944991285] [2022-07-22 20:48:15,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944991285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:15,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:15,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:48:15,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989391818] [2022-07-22 20:48:15,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:15,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:48:15,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:15,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:48:15,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:48:15,586 INFO L87 Difference]: Start difference. First operand 565 states and 829 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:16,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:16,330 INFO L93 Difference]: Finished difference Result 866 states and 1243 transitions. [2022-07-22 20:48:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:48:16,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-22 20:48:16,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:16,334 INFO L225 Difference]: With dead ends: 866 [2022-07-22 20:48:16,334 INFO L226 Difference]: Without dead ends: 599 [2022-07-22 20:48:16,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:48:16,335 INFO L413 NwaCegarLoop]: 551 mSDtfsCounter, 728 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:16,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 2192 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:48:16,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2022-07-22 20:48:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 570. [2022-07-22 20:48:16,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 478 states have (on average 1.4728033472803348) internal successors, (704), 486 states have internal predecessors, (704), 58 states have call successors, (58), 28 states have call predecessors, (58), 32 states have return successors, (70), 59 states have call predecessors, (70), 56 states have call successors, (70) [2022-07-22 20:48:16,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 832 transitions. [2022-07-22 20:48:16,358 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 832 transitions. Word has length 65 [2022-07-22 20:48:16,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:16,359 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 832 transitions. [2022-07-22 20:48:16,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:16,359 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 832 transitions. [2022-07-22 20:48:16,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:16,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:16,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:16,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 20:48:16,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:16,362 INFO L85 PathProgramCache]: Analyzing trace with hash 210481618, now seen corresponding path program 1 times [2022-07-22 20:48:16,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:16,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691390138] [2022-07-22 20:48:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:16,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:16,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:16,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:16,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691390138] [2022-07-22 20:48:16,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691390138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:16,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:16,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:48:16,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871886075] [2022-07-22 20:48:16,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:16,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:48:16,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:16,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:48:16,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:48:16,476 INFO L87 Difference]: Start difference. First operand 570 states and 832 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:48:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:17,880 INFO L93 Difference]: Finished difference Result 2232 states and 3104 transitions. [2022-07-22 20:48:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 20:48:17,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-22 20:48:17,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:17,888 INFO L225 Difference]: With dead ends: 2232 [2022-07-22 20:48:17,888 INFO L226 Difference]: Without dead ends: 1960 [2022-07-22 20:48:17,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=235, Invalid=887, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 20:48:17,891 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 2418 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 1578 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2435 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 2109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 1578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:17,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2435 Valid, 2158 Invalid, 2109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 1578 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:48:17,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2022-07-22 20:48:17,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1710. [2022-07-22 20:48:17,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1378 states have (on average 1.3679245283018868) internal successors, (1885), 1406 states have internal predecessors, (1885), 175 states have call successors, (175), 130 states have call predecessors, (175), 155 states have return successors, (256), 177 states have call predecessors, (256), 173 states have call successors, (256) [2022-07-22 20:48:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2316 transitions. [2022-07-22 20:48:17,981 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2316 transitions. Word has length 65 [2022-07-22 20:48:17,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:17,981 INFO L495 AbstractCegarLoop]: Abstraction has 1710 states and 2316 transitions. [2022-07-22 20:48:17,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-22 20:48:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2316 transitions. [2022-07-22 20:48:17,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:17,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:17,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:17,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 20:48:17,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:17,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:17,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1261930707, now seen corresponding path program 1 times [2022-07-22 20:48:17,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:17,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945488510] [2022-07-22 20:48:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:17,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:18,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:18,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945488510] [2022-07-22 20:48:18,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945488510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:18,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:18,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:48:18,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885991594] [2022-07-22 20:48:18,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:18,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:48:18,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:18,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:48:18,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:48:18,059 INFO L87 Difference]: Start difference. First operand 1710 states and 2316 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:18,755 INFO L93 Difference]: Finished difference Result 3311 states and 4440 transitions. [2022-07-22 20:48:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:48:18,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-22 20:48:18,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:18,763 INFO L225 Difference]: With dead ends: 3311 [2022-07-22 20:48:18,763 INFO L226 Difference]: Without dead ends: 1899 [2022-07-22 20:48:18,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:48:18,766 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 726 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:18,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 2190 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:48:18,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2022-07-22 20:48:18,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1755. [2022-07-22 20:48:18,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1414 states have (on average 1.3521923620933523) internal successors, (1912), 1442 states have internal predecessors, (1912), 175 states have call successors, (175), 130 states have call predecessors, (175), 164 states have return successors, (268), 186 states have call predecessors, (268), 173 states have call successors, (268) [2022-07-22 20:48:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2355 transitions. [2022-07-22 20:48:18,855 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2355 transitions. Word has length 65 [2022-07-22 20:48:18,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:18,855 INFO L495 AbstractCegarLoop]: Abstraction has 1755 states and 2355 transitions. [2022-07-22 20:48:18,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:18,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2355 transitions. [2022-07-22 20:48:18,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:18,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:18,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:18,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 20:48:18,857 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:18,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:18,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1646833195, now seen corresponding path program 1 times [2022-07-22 20:48:18,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:18,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260621910] [2022-07-22 20:48:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:18,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:18,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:18,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:18,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260621910] [2022-07-22 20:48:18,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260621910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:18,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:18,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:48:18,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059848184] [2022-07-22 20:48:18,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:18,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:48:18,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:18,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:48:18,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:18,953 INFO L87 Difference]: Start difference. First operand 1755 states and 2355 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:19,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:19,623 INFO L93 Difference]: Finished difference Result 3190 states and 4194 transitions. [2022-07-22 20:48:19,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 20:48:19,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:48:19,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:19,630 INFO L225 Difference]: With dead ends: 3190 [2022-07-22 20:48:19,630 INFO L226 Difference]: Without dead ends: 1953 [2022-07-22 20:48:19,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-22 20:48:19,633 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 1384 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:19,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1409 Valid, 1627 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 20:48:19,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1953 states. [2022-07-22 20:48:19,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1953 to 1733. [2022-07-22 20:48:19,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1400 states have (on average 1.3485714285714285) internal successors, (1888), 1422 states have internal predecessors, (1888), 175 states have call successors, (175), 130 states have call predecessors, (175), 156 states have return successors, (252), 184 states have call predecessors, (252), 173 states have call successors, (252) [2022-07-22 20:48:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2315 transitions. [2022-07-22 20:48:19,693 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2315 transitions. Word has length 65 [2022-07-22 20:48:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:19,693 INFO L495 AbstractCegarLoop]: Abstraction has 1733 states and 2315 transitions. [2022-07-22 20:48:19,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2315 transitions. [2022-07-22 20:48:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 20:48:19,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:19,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:19,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 20:48:19,694 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:19,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1780846701, now seen corresponding path program 1 times [2022-07-22 20:48:19,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:19,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833612308] [2022-07-22 20:48:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:19,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:19,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:19,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833612308] [2022-07-22 20:48:19,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833612308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:19,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:19,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:19,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165777699] [2022-07-22 20:48:19,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:19,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:19,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:19,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:19,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:19,748 INFO L87 Difference]: Start difference. First operand 1733 states and 2315 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:20,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:20,140 INFO L93 Difference]: Finished difference Result 4808 states and 6294 transitions. [2022-07-22 20:48:20,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 20:48:20,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-22 20:48:20,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:20,151 INFO L225 Difference]: With dead ends: 4808 [2022-07-22 20:48:20,151 INFO L226 Difference]: Without dead ends: 3376 [2022-07-22 20:48:20,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:48:20,154 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 1080 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:20,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1587 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:48:20,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2022-07-22 20:48:20,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3104. [2022-07-22 20:48:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 2466 states have (on average 1.2996755879967559) internal successors, (3205), 2509 states have internal predecessors, (3205), 327 states have call successors, (327), 253 states have call predecessors, (327), 309 states have return successors, (524), 348 states have call predecessors, (524), 325 states have call successors, (524) [2022-07-22 20:48:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 4056 transitions. [2022-07-22 20:48:20,263 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 4056 transitions. Word has length 65 [2022-07-22 20:48:20,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:20,263 INFO L495 AbstractCegarLoop]: Abstraction has 3104 states and 4056 transitions. [2022-07-22 20:48:20,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-22 20:48:20,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 4056 transitions. [2022-07-22 20:48:20,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 20:48:20,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:20,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:20,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 20:48:20,266 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:20,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:20,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1311152709, now seen corresponding path program 1 times [2022-07-22 20:48:20,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:20,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695218553] [2022-07-22 20:48:20,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:20,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:20,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:20,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:20,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:20,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:20,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:20,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:20,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:20,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:20,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:20,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:20,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695218553] [2022-07-22 20:48:20,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695218553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:20,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:20,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:48:20,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8473602] [2022-07-22 20:48:20,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:20,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:48:20,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:20,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:48:20,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:48:20,308 INFO L87 Difference]: Start difference. First operand 3104 states and 4056 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:20,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:20,851 INFO L93 Difference]: Finished difference Result 8122 states and 10570 transitions. [2022-07-22 20:48:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:48:20,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-22 20:48:20,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:20,871 INFO L225 Difference]: With dead ends: 8122 [2022-07-22 20:48:20,872 INFO L226 Difference]: Without dead ends: 5298 [2022-07-22 20:48:20,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:48:20,879 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 659 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:20,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 1593 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 20:48:20,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5298 states. [2022-07-22 20:48:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5298 to 4782. [2022-07-22 20:48:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 3751 states have (on average 1.28099173553719) internal successors, (4805), 3801 states have internal predecessors, (4805), 521 states have call successors, (521), 427 states have call predecessors, (521), 508 states have return successors, (845), 560 states have call predecessors, (845), 519 states have call successors, (845) [2022-07-22 20:48:21,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 6171 transitions. [2022-07-22 20:48:21,075 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 6171 transitions. Word has length 66 [2022-07-22 20:48:21,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:21,076 INFO L495 AbstractCegarLoop]: Abstraction has 4782 states and 6171 transitions. [2022-07-22 20:48:21,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 20:48:21,076 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 6171 transitions. [2022-07-22 20:48:21,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 20:48:21,077 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:21,078 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:21,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 20:48:21,078 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:21,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:21,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1242800463, now seen corresponding path program 1 times [2022-07-22 20:48:21,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:21,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766250092] [2022-07-22 20:48:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:21,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:21,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:21,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:21,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766250092] [2022-07-22 20:48:21,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766250092] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:21,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:21,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:21,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146546120] [2022-07-22 20:48:21,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:21,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:21,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:21,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:21,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:21,133 INFO L87 Difference]: Start difference. First operand 4782 states and 6171 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:48:21,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:21,586 INFO L93 Difference]: Finished difference Result 6412 states and 8173 transitions. [2022-07-22 20:48:21,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 20:48:21,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-22 20:48:21,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:21,607 INFO L225 Difference]: With dead ends: 6412 [2022-07-22 20:48:21,607 INFO L226 Difference]: Without dead ends: 6409 [2022-07-22 20:48:21,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-22 20:48:21,611 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1889 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:21,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1898 Valid, 1108 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 20:48:21,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6409 states. [2022-07-22 20:48:21,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6409 to 5836. [2022-07-22 20:48:21,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5836 states, 4554 states have (on average 1.2681159420289856) internal successors, (5775), 4613 states have internal predecessors, (5775), 647 states have call successors, (647), 541 states have call predecessors, (647), 633 states have return successors, (1038), 688 states have call predecessors, (1038), 646 states have call successors, (1038) [2022-07-22 20:48:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5836 states to 5836 states and 7460 transitions. [2022-07-22 20:48:21,883 INFO L78 Accepts]: Start accepts. Automaton has 5836 states and 7460 transitions. Word has length 73 [2022-07-22 20:48:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:21,884 INFO L495 AbstractCegarLoop]: Abstraction has 5836 states and 7460 transitions. [2022-07-22 20:48:21,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:48:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 5836 states and 7460 transitions. [2022-07-22 20:48:21,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 20:48:21,887 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:21,887 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:21,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 20:48:21,888 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:21,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:21,888 INFO L85 PathProgramCache]: Analyzing trace with hash 126751022, now seen corresponding path program 1 times [2022-07-22 20:48:21,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:21,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989050637] [2022-07-22 20:48:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:21,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:21,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:21,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:21,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989050637] [2022-07-22 20:48:21,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989050637] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:48:21,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386046345] [2022-07-22 20:48:21,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:21,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:48:21,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:48:21,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:48:22,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 20:48:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:22,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 20:48:22,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:48:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:22,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 20:48:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:22,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386046345] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 20:48:22,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 20:48:22,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-22 20:48:22,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586226470] [2022-07-22 20:48:22,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 20:48:22,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 20:48:22,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:22,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 20:48:22,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:48:22,423 INFO L87 Difference]: Start difference. First operand 5836 states and 7460 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 20:48:24,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:24,059 INFO L93 Difference]: Finished difference Result 13482 states and 16988 transitions. [2022-07-22 20:48:24,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 20:48:24,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-22 20:48:24,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:24,103 INFO L225 Difference]: With dead ends: 13482 [2022-07-22 20:48:24,103 INFO L226 Difference]: Without dead ends: 13479 [2022-07-22 20:48:24,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-22 20:48:24,109 INFO L413 NwaCegarLoop]: 725 mSDtfsCounter, 1589 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 1919 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1654 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 2142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:24,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1654 Valid, 2634 Invalid, 2142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1919 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 20:48:24,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13479 states. [2022-07-22 20:48:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13479 to 11094. [2022-07-22 20:48:24,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11094 states, 8646 states have (on average 1.2588480222068008) internal successors, (10884), 8757 states have internal predecessors, (10884), 1213 states have call successors, (1213), 1031 states have call predecessors, (1213), 1233 states have return successors, (1977), 1312 states have call predecessors, (1977), 1212 states have call successors, (1977) [2022-07-22 20:48:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11094 states to 11094 states and 14074 transitions. [2022-07-22 20:48:24,578 INFO L78 Accepts]: Start accepts. Automaton has 11094 states and 14074 transitions. Word has length 74 [2022-07-22 20:48:24,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:24,578 INFO L495 AbstractCegarLoop]: Abstraction has 11094 states and 14074 transitions. [2022-07-22 20:48:24,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 20:48:24,579 INFO L276 IsEmpty]: Start isEmpty. Operand 11094 states and 14074 transitions. [2022-07-22 20:48:24,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 20:48:24,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:24,581 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:24,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 20:48:24,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 20:48:24,795 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:24,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:24,796 INFO L85 PathProgramCache]: Analyzing trace with hash -567160719, now seen corresponding path program 2 times [2022-07-22 20:48:24,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:24,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704598538] [2022-07-22 20:48:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:24,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:24,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:24,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:24,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704598538] [2022-07-22 20:48:24,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704598538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:24,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:24,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:48:24,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468325743] [2022-07-22 20:48:24,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:24,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:48:24,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:24,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:48:24,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:48:24,840 INFO L87 Difference]: Start difference. First operand 11094 states and 14074 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:48:25,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:25,458 INFO L93 Difference]: Finished difference Result 17637 states and 22416 transitions. [2022-07-22 20:48:25,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 20:48:25,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-22 20:48:25,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:25,482 INFO L225 Difference]: With dead ends: 17637 [2022-07-22 20:48:25,483 INFO L226 Difference]: Without dead ends: 7699 [2022-07-22 20:48:25,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-22 20:48:25,505 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 986 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:25,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 1470 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 20:48:25,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7699 states. [2022-07-22 20:48:25,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7699 to 7147. [2022-07-22 20:48:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 5593 states have (on average 1.237976041480422) internal successors, (6924), 5660 states have internal predecessors, (6924), 780 states have call successors, (780), 655 states have call predecessors, (780), 772 states have return successors, (1196), 838 states have call predecessors, (1196), 779 states have call successors, (1196) [2022-07-22 20:48:25,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 8900 transitions. [2022-07-22 20:48:25,915 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 8900 transitions. Word has length 77 [2022-07-22 20:48:25,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:25,915 INFO L495 AbstractCegarLoop]: Abstraction has 7147 states and 8900 transitions. [2022-07-22 20:48:25,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-22 20:48:25,916 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 8900 transitions. [2022-07-22 20:48:25,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-22 20:48:25,918 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:25,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:25,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 20:48:25,918 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1983760768, now seen corresponding path program 1 times [2022-07-22 20:48:25,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:25,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608345926] [2022-07-22 20:48:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:25,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:25,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:25,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:25,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:25,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:25,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:25,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:25,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:25,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 20:48:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-22 20:48:25,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:25,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608345926] [2022-07-22 20:48:25,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608345926] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:25,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:25,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 20:48:25,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059369324] [2022-07-22 20:48:25,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:25,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 20:48:25,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:25,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 20:48:25,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 20:48:25,990 INFO L87 Difference]: Start difference. First operand 7147 states and 8900 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:27,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:27,077 INFO L93 Difference]: Finished difference Result 21021 states and 26117 transitions. [2022-07-22 20:48:27,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 20:48:27,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-22 20:48:27,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:27,115 INFO L225 Difference]: With dead ends: 21021 [2022-07-22 20:48:27,115 INFO L226 Difference]: Without dead ends: 14178 [2022-07-22 20:48:27,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-22 20:48:27,131 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 1474 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:27,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1742 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 20:48:27,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14178 states. [2022-07-22 20:48:27,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14178 to 13319. [2022-07-22 20:48:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13319 states, 10269 states have (on average 1.2085889570552146) internal successors, (12411), 10442 states have internal predecessors, (12411), 1496 states have call successors, (1496), 1259 states have call predecessors, (1496), 1552 states have return successors, (2599), 1630 states have call predecessors, (2599), 1495 states have call successors, (2599) [2022-07-22 20:48:27,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 16506 transitions. [2022-07-22 20:48:27,657 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 16506 transitions. Word has length 84 [2022-07-22 20:48:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:27,657 INFO L495 AbstractCegarLoop]: Abstraction has 13319 states and 16506 transitions. [2022-07-22 20:48:27,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:27,658 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 16506 transitions. [2022-07-22 20:48:27,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-22 20:48:27,662 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:27,662 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:27,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 20:48:27,662 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:27,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:27,663 INFO L85 PathProgramCache]: Analyzing trace with hash -215482833, now seen corresponding path program 1 times [2022-07-22 20:48:27,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:27,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940925103] [2022-07-22 20:48:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:27,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:27,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:27,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:27,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:27,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 20:48:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:27,725 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 20:48:27,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:27,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940925103] [2022-07-22 20:48:27,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940925103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:27,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:27,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 20:48:27,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154621799] [2022-07-22 20:48:27,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:27,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 20:48:27,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:27,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 20:48:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:48:27,727 INFO L87 Difference]: Start difference. First operand 13319 states and 16506 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:29,030 INFO L93 Difference]: Finished difference Result 24193 states and 29825 transitions. [2022-07-22 20:48:29,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 20:48:29,030 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-22 20:48:29,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:29,067 INFO L225 Difference]: With dead ends: 24193 [2022-07-22 20:48:29,067 INFO L226 Difference]: Without dead ends: 11794 [2022-07-22 20:48:29,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-22 20:48:29,095 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 1676 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:29,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 2037 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 1320 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:48:29,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11794 states. [2022-07-22 20:48:29,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11794 to 10894. [2022-07-22 20:48:29,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10894 states, 8435 states have (on average 1.2) internal successors, (10122), 8575 states have internal predecessors, (10122), 1197 states have call successors, (1197), 1008 states have call predecessors, (1197), 1260 states have return successors, (1931), 1320 states have call predecessors, (1931), 1196 states have call successors, (1931) [2022-07-22 20:48:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10894 states to 10894 states and 13250 transitions. [2022-07-22 20:48:29,621 INFO L78 Accepts]: Start accepts. Automaton has 10894 states and 13250 transitions. Word has length 93 [2022-07-22 20:48:29,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:29,621 INFO L495 AbstractCegarLoop]: Abstraction has 10894 states and 13250 transitions. [2022-07-22 20:48:29,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-22 20:48:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 10894 states and 13250 transitions. [2022-07-22 20:48:29,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 20:48:29,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:29,630 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:29,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 20:48:29,630 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:29,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:29,631 INFO L85 PathProgramCache]: Analyzing trace with hash 2019952060, now seen corresponding path program 1 times [2022-07-22 20:48:29,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:29,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018328365] [2022-07-22 20:48:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:29,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 20:48:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 20:48:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 20:48:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 20:48:29,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 20:48:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 20:48:29,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 20:48:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 20:48:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-22 20:48:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 20:48:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 20:48:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 20:48:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-22 20:48:29,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:29,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018328365] [2022-07-22 20:48:29,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018328365] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 20:48:29,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574062482] [2022-07-22 20:48:29,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:29,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 20:48:29,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 20:48:29,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 20:48:29,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 20:48:29,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:29,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 20:48:29,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 20:48:29,848 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-22 20:48:29,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 20:48:29,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574062482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:29,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 20:48:29,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-22 20:48:29,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510188354] [2022-07-22 20:48:29,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:29,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:48:29,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:29,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:48:29,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 20:48:29,850 INFO L87 Difference]: Start difference. First operand 10894 states and 13250 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:48:30,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:30,095 INFO L93 Difference]: Finished difference Result 16042 states and 19470 transitions. [2022-07-22 20:48:30,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:48:30,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-22 20:48:30,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:30,110 INFO L225 Difference]: With dead ends: 16042 [2022-07-22 20:48:30,110 INFO L226 Difference]: Without dead ends: 5460 [2022-07-22 20:48:30,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-22 20:48:30,126 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 34 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:30,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2765 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 20:48:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2022-07-22 20:48:30,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5018. [2022-07-22 20:48:30,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 4000 states have (on average 1.197) internal successors, (4788), 4038 states have internal predecessors, (4788), 499 states have call successors, (499), 402 states have call predecessors, (499), 517 states have return successors, (771), 578 states have call predecessors, (771), 498 states have call successors, (771) [2022-07-22 20:48:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 6058 transitions. [2022-07-22 20:48:30,351 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 6058 transitions. Word has length 145 [2022-07-22 20:48:30,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:30,352 INFO L495 AbstractCegarLoop]: Abstraction has 5018 states and 6058 transitions. [2022-07-22 20:48:30,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 20:48:30,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 6058 transitions. [2022-07-22 20:48:30,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:48:30,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:30,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:30,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 20:48:30,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 20:48:30,586 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:30,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:30,587 INFO L85 PathProgramCache]: Analyzing trace with hash 814047811, now seen corresponding path program 1 times [2022-07-22 20:48:30,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:30,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919330298] [2022-07-22 20:48:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:30,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:30,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:48:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:30,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:30,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:30,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:48:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:30,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:30,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919330298] [2022-07-22 20:48:30,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919330298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:30,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:30,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 20:48:30,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095854152] [2022-07-22 20:48:30,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:30,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 20:48:30,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:30,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 20:48:30,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 20:48:30,653 INFO L87 Difference]: Start difference. First operand 5018 states and 6058 transitions. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:31,703 INFO L93 Difference]: Finished difference Result 5382 states and 6640 transitions. [2022-07-22 20:48:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:48:31,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:48:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:31,713 INFO L225 Difference]: With dead ends: 5382 [2022-07-22 20:48:31,714 INFO L226 Difference]: Without dead ends: 5116 [2022-07-22 20:48:31,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-22 20:48:31,717 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 827 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:31,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1058 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:48:31,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2022-07-22 20:48:31,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 5018. [2022-07-22 20:48:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5018 states, 4000 states have (on average 1.19675) internal successors, (4787), 4038 states have internal predecessors, (4787), 499 states have call successors, (499), 402 states have call predecessors, (499), 517 states have return successors, (771), 578 states have call predecessors, (771), 498 states have call successors, (771) [2022-07-22 20:48:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 6057 transitions. [2022-07-22 20:48:31,951 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 6057 transitions. Word has length 134 [2022-07-22 20:48:31,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:31,952 INFO L495 AbstractCegarLoop]: Abstraction has 5018 states and 6057 transitions. [2022-07-22 20:48:31,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:31,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 6057 transitions. [2022-07-22 20:48:31,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:48:31,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:31,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:31,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 20:48:31,959 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:31,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:31,960 INFO L85 PathProgramCache]: Analyzing trace with hash 326000705, now seen corresponding path program 1 times [2022-07-22 20:48:31,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:31,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895846933] [2022-07-22 20:48:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:31,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:31,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:31,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:32,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:48:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:32,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:32,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:32,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:48:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:32,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:32,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895846933] [2022-07-22 20:48:32,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895846933] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:32,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:32,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 20:48:32,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112329243] [2022-07-22 20:48:32,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:32,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 20:48:32,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:32,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 20:48:32,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 20:48:32,043 INFO L87 Difference]: Start difference. First operand 5018 states and 6057 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:33,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:33,761 INFO L93 Difference]: Finished difference Result 5746 states and 7224 transitions. [2022-07-22 20:48:33,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 20:48:33,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:48:33,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:33,775 INFO L225 Difference]: With dead ends: 5746 [2022-07-22 20:48:33,775 INFO L226 Difference]: Without dead ends: 5485 [2022-07-22 20:48:33,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:48:33,779 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1310 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 1707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:33,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 1586 Invalid, 1707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 20:48:33,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5485 states. [2022-07-22 20:48:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5485 to 5290. [2022-07-22 20:48:34,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 4248 states have (on average 1.2191619585687383) internal successors, (5179), 4287 states have internal predecessors, (5179), 516 states have call successors, (516), 408 states have call predecessors, (516), 524 states have return successors, (791), 595 states have call predecessors, (791), 515 states have call successors, (791) [2022-07-22 20:48:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 6486 transitions. [2022-07-22 20:48:34,039 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 6486 transitions. Word has length 134 [2022-07-22 20:48:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:34,040 INFO L495 AbstractCegarLoop]: Abstraction has 5290 states and 6486 transitions. [2022-07-22 20:48:34,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 6486 transitions. [2022-07-22 20:48:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:48:34,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:34,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:34,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 20:48:34,046 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:34,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:34,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1380502843, now seen corresponding path program 1 times [2022-07-22 20:48:34,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:34,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940427217] [2022-07-22 20:48:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:34,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:48:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:48:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:34,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:34,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940427217] [2022-07-22 20:48:34,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940427217] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:34,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:34,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125145694] [2022-07-22 20:48:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:34,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:34,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:34,131 INFO L87 Difference]: Start difference. First operand 5290 states and 6486 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:36,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:36,269 INFO L93 Difference]: Finished difference Result 6399 states and 8262 transitions. [2022-07-22 20:48:36,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:48:36,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:48:36,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:36,281 INFO L225 Difference]: With dead ends: 6399 [2022-07-22 20:48:36,281 INFO L226 Difference]: Without dead ends: 5866 [2022-07-22 20:48:36,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:48:36,284 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 1323 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 2509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:36,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 2415 Invalid, 2509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 20:48:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2022-07-22 20:48:36,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 5543. [2022-07-22 20:48:36,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5543 states, 4477 states have (on average 1.2358722358722358) internal successors, (5533), 4517 states have internal predecessors, (5533), 533 states have call successors, (533), 414 states have call predecessors, (533), 531 states have return successors, (810), 613 states have call predecessors, (810), 532 states have call successors, (810) [2022-07-22 20:48:36,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5543 states to 5543 states and 6876 transitions. [2022-07-22 20:48:36,662 INFO L78 Accepts]: Start accepts. Automaton has 5543 states and 6876 transitions. Word has length 134 [2022-07-22 20:48:36,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:36,663 INFO L495 AbstractCegarLoop]: Abstraction has 5543 states and 6876 transitions. [2022-07-22 20:48:36,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 5543 states and 6876 transitions. [2022-07-22 20:48:36,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:48:36,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:36,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:36,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 20:48:36,676 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash 621383427, now seen corresponding path program 1 times [2022-07-22 20:48:36,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:36,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252096600] [2022-07-22 20:48:36,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:36,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:36,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:36,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:48:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:36,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:36,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:36,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:48:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:36,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:36,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252096600] [2022-07-22 20:48:36,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252096600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:36,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:36,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:36,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140905838] [2022-07-22 20:48:36,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:36,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:36,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:36,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:36,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:36,785 INFO L87 Difference]: Start difference. First operand 5543 states and 6876 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:38,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:38,645 INFO L93 Difference]: Finished difference Result 7361 states and 9780 transitions. [2022-07-22 20:48:38,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:48:38,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:48:38,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:38,662 INFO L225 Difference]: With dead ends: 7361 [2022-07-22 20:48:38,662 INFO L226 Difference]: Without dead ends: 6575 [2022-07-22 20:48:38,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:48:38,666 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 1323 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:38,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 2405 Invalid, 2514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 20:48:38,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6575 states. [2022-07-22 20:48:39,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6575 to 6050. [2022-07-22 20:48:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6050 states, 4936 states have (on average 1.2645867098865478) internal successors, (6242), 4978 states have internal predecessors, (6242), 567 states have call successors, (567), 426 states have call predecessors, (567), 545 states have return successors, (852), 649 states have call predecessors, (852), 566 states have call successors, (852) [2022-07-22 20:48:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6050 states to 6050 states and 7661 transitions. [2022-07-22 20:48:39,022 INFO L78 Accepts]: Start accepts. Automaton has 6050 states and 7661 transitions. Word has length 134 [2022-07-22 20:48:39,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:39,022 INFO L495 AbstractCegarLoop]: Abstraction has 6050 states and 7661 transitions. [2022-07-22 20:48:39,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:39,022 INFO L276 IsEmpty]: Start isEmpty. Operand 6050 states and 7661 transitions. [2022-07-22 20:48:39,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:48:39,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:39,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:39,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 20:48:39,029 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:39,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1946438907, now seen corresponding path program 1 times [2022-07-22 20:48:39,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:39,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390450502] [2022-07-22 20:48:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:39,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:39,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:39,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:48:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:39,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:39,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:48:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:39,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:39,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390450502] [2022-07-22 20:48:39,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390450502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:39,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:39,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:39,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107081932] [2022-07-22 20:48:39,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:39,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:39,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:39,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:39,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:39,119 INFO L87 Difference]: Start difference. First operand 6050 states and 7661 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:41,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:41,638 INFO L93 Difference]: Finished difference Result 9209 states and 12681 transitions. [2022-07-22 20:48:41,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:48:41,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:48:41,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:41,659 INFO L225 Difference]: With dead ends: 9209 [2022-07-22 20:48:41,660 INFO L226 Difference]: Without dead ends: 7916 [2022-07-22 20:48:41,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:48:41,667 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 1318 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:41,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 2397 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 20:48:41,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7916 states. [2022-07-22 20:48:42,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7916 to 7070. [2022-07-22 20:48:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7070 states, 5860 states have (on average 1.3088737201365188) internal successors, (7670), 5906 states have internal predecessors, (7670), 635 states have call successors, (635), 450 states have call predecessors, (635), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2022-07-22 20:48:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7070 states to 7070 states and 9247 transitions. [2022-07-22 20:48:42,045 INFO L78 Accepts]: Start accepts. Automaton has 7070 states and 9247 transitions. Word has length 134 [2022-07-22 20:48:42,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:42,046 INFO L495 AbstractCegarLoop]: Abstraction has 7070 states and 9247 transitions. [2022-07-22 20:48:42,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:42,046 INFO L276 IsEmpty]: Start isEmpty. Operand 7070 states and 9247 transitions. [2022-07-22 20:48:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:48:42,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:42,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:42,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 20:48:42,052 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:42,053 INFO L85 PathProgramCache]: Analyzing trace with hash 701165447, now seen corresponding path program 1 times [2022-07-22 20:48:42,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:42,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968620844] [2022-07-22 20:48:42,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:42,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:42,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:42,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:48:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:42,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:42,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:42,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:48:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:42,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:42,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968620844] [2022-07-22 20:48:42,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968620844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:42,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:42,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:42,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423981775] [2022-07-22 20:48:42,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:42,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:42,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:42,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:42,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:42,129 INFO L87 Difference]: Start difference. First operand 7070 states and 9247 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:43,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:43,533 INFO L93 Difference]: Finished difference Result 10244 states and 14320 transitions. [2022-07-22 20:48:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:48:43,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:48:43,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:43,550 INFO L225 Difference]: With dead ends: 10244 [2022-07-22 20:48:43,550 INFO L226 Difference]: Without dead ends: 7931 [2022-07-22 20:48:43,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:48:43,556 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1010 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:43,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1455 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 20:48:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7931 states. [2022-07-22 20:48:43,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7931 to 7070. [2022-07-22 20:48:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7070 states, 5860 states have (on average 1.3073378839590444) internal successors, (7661), 5906 states have internal predecessors, (7661), 635 states have call successors, (635), 450 states have call predecessors, (635), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2022-07-22 20:48:43,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7070 states to 7070 states and 9238 transitions. [2022-07-22 20:48:43,900 INFO L78 Accepts]: Start accepts. Automaton has 7070 states and 9238 transitions. Word has length 134 [2022-07-22 20:48:43,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:43,900 INFO L495 AbstractCegarLoop]: Abstraction has 7070 states and 9238 transitions. [2022-07-22 20:48:43,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:43,900 INFO L276 IsEmpty]: Start isEmpty. Operand 7070 states and 9238 transitions. [2022-07-22 20:48:43,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:48:43,905 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:43,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:43,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 20:48:43,906 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:43,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:43,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1430185275, now seen corresponding path program 1 times [2022-07-22 20:48:43,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:43,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600495169] [2022-07-22 20:48:43,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:43,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:48:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:43,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:43,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:43,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:43,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:48:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:43,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:43,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:43,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600495169] [2022-07-22 20:48:43,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600495169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:43,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:43,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:43,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858878951] [2022-07-22 20:48:43,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:43,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:43,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:43,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:43,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:43,977 INFO L87 Difference]: Start difference. First operand 7070 states and 9238 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:45,159 INFO L93 Difference]: Finished difference Result 10234 states and 14273 transitions. [2022-07-22 20:48:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:48:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:48:45,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:45,207 INFO L225 Difference]: With dead ends: 10234 [2022-07-22 20:48:45,207 INFO L226 Difference]: Without dead ends: 7921 [2022-07-22 20:48:45,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:48:45,228 INFO L413 NwaCegarLoop]: 536 mSDtfsCounter, 1223 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:45,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 1231 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 20:48:45,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7921 states. [2022-07-22 20:48:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7921 to 7070. [2022-07-22 20:48:45,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7070 states, 5860 states have (on average 1.30580204778157) internal successors, (7652), 5906 states have internal predecessors, (7652), 635 states have call successors, (635), 450 states have call predecessors, (635), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2022-07-22 20:48:45,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7070 states to 7070 states and 9229 transitions. [2022-07-22 20:48:45,687 INFO L78 Accepts]: Start accepts. Automaton has 7070 states and 9229 transitions. Word has length 134 [2022-07-22 20:48:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:45,687 INFO L495 AbstractCegarLoop]: Abstraction has 7070 states and 9229 transitions. [2022-07-22 20:48:45,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 7070 states and 9229 transitions. [2022-07-22 20:48:45,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:48:45,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:45,694 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:45,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 20:48:45,695 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:45,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:45,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1826197447, now seen corresponding path program 1 times [2022-07-22 20:48:45,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:45,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049747587] [2022-07-22 20:48:45,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:45,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:48:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:48:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:45,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:45,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049747587] [2022-07-22 20:48:45,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049747587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:45,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:45,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:45,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501034726] [2022-07-22 20:48:45,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:45,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:45,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:45,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:45,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:45,783 INFO L87 Difference]: Start difference. First operand 7070 states and 9229 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:47,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:47,096 INFO L93 Difference]: Finished difference Result 10224 states and 14226 transitions. [2022-07-22 20:48:47,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 20:48:47,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:48:47,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:47,132 INFO L225 Difference]: With dead ends: 10224 [2022-07-22 20:48:47,132 INFO L226 Difference]: Without dead ends: 7911 [2022-07-22 20:48:47,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-22 20:48:47,138 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 1006 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:47,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 1447 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 20:48:47,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7911 states. [2022-07-22 20:48:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7911 to 7070. [2022-07-22 20:48:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7070 states, 5860 states have (on average 1.3042662116040955) internal successors, (7643), 5906 states have internal predecessors, (7643), 635 states have call successors, (635), 450 states have call predecessors, (635), 573 states have return successors, (942), 721 states have call predecessors, (942), 634 states have call successors, (942) [2022-07-22 20:48:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7070 states to 7070 states and 9220 transitions. [2022-07-22 20:48:47,516 INFO L78 Accepts]: Start accepts. Automaton has 7070 states and 9220 transitions. Word has length 134 [2022-07-22 20:48:47,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:47,516 INFO L495 AbstractCegarLoop]: Abstraction has 7070 states and 9220 transitions. [2022-07-22 20:48:47,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:47,519 INFO L276 IsEmpty]: Start isEmpty. Operand 7070 states and 9220 transitions. [2022-07-22 20:48:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:48:47,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:47,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:47,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 20:48:47,525 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:47,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:47,525 INFO L85 PathProgramCache]: Analyzing trace with hash -146967931, now seen corresponding path program 1 times [2022-07-22 20:48:47,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:47,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674295814] [2022-07-22 20:48:47,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:47,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:48:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:48:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:47,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:47,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674295814] [2022-07-22 20:48:47,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674295814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:47,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:47,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:47,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012463497] [2022-07-22 20:48:47,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:47,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:47,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:47,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:47,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:47,611 INFO L87 Difference]: Start difference. First operand 7070 states and 9220 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:49,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:49,682 INFO L93 Difference]: Finished difference Result 12885 states and 18325 transitions. [2022-07-22 20:48:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 20:48:49,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:48:49,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:49,731 INFO L225 Difference]: With dead ends: 12885 [2022-07-22 20:48:49,732 INFO L226 Difference]: Without dead ends: 10572 [2022-07-22 20:48:49,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-22 20:48:49,740 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 1296 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1321 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:49,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1321 Valid, 2374 Invalid, 2430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-22 20:48:49,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10572 states. [2022-07-22 20:48:50,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10572 to 9142. [2022-07-22 20:48:50,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9142 states, 7740 states have (on average 1.3580103359173126) internal successors, (10511), 7794 states have internal predecessors, (10511), 771 states have call successors, (771), 498 states have call predecessors, (771), 629 states have return successors, (1140), 865 states have call predecessors, (1140), 770 states have call successors, (1140) [2022-07-22 20:48:50,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9142 states to 9142 states and 12422 transitions. [2022-07-22 20:48:50,256 INFO L78 Accepts]: Start accepts. Automaton has 9142 states and 12422 transitions. Word has length 134 [2022-07-22 20:48:50,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:50,256 INFO L495 AbstractCegarLoop]: Abstraction has 9142 states and 12422 transitions. [2022-07-22 20:48:50,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:50,257 INFO L276 IsEmpty]: Start isEmpty. Operand 9142 states and 12422 transitions. [2022-07-22 20:48:50,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:48:50,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:50,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:50,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 20:48:50,265 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash 2006138887, now seen corresponding path program 1 times [2022-07-22 20:48:50,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:50,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271602575] [2022-07-22 20:48:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:50,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:48:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:48:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:50,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:50,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271602575] [2022-07-22 20:48:50,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271602575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:50,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:50,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:50,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589126065] [2022-07-22 20:48:50,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:50,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:50,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:50,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:50,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:50,355 INFO L87 Difference]: Start difference. First operand 9142 states and 12422 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:53,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:53,664 INFO L93 Difference]: Finished difference Result 22235 states and 32863 transitions. [2022-07-22 20:48:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:48:53,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:48:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:53,710 INFO L225 Difference]: With dead ends: 22235 [2022-07-22 20:48:53,710 INFO L226 Difference]: Without dead ends: 17850 [2022-07-22 20:48:53,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:48:53,724 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 1378 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1402 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:53,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1402 Valid, 2495 Invalid, 2813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 20:48:53,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17850 states. [2022-07-22 20:48:54,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17850 to 13247. [2022-07-22 20:48:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13247 states, 11477 states have (on average 1.4136969591356627) internal successors, (16225), 11547 states have internal predecessors, (16225), 1027 states have call successors, (1027), 594 states have call predecessors, (1027), 741 states have return successors, (1574), 1137 states have call predecessors, (1574), 1026 states have call successors, (1574) [2022-07-22 20:48:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13247 states to 13247 states and 18826 transitions. [2022-07-22 20:48:54,606 INFO L78 Accepts]: Start accepts. Automaton has 13247 states and 18826 transitions. Word has length 134 [2022-07-22 20:48:54,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:48:54,607 INFO L495 AbstractCegarLoop]: Abstraction has 13247 states and 18826 transitions. [2022-07-22 20:48:54,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:54,607 INFO L276 IsEmpty]: Start isEmpty. Operand 13247 states and 18826 transitions. [2022-07-22 20:48:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:48:54,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:48:54,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:48:54,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 20:48:54,615 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:48:54,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:48:54,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1382857285, now seen corresponding path program 1 times [2022-07-22 20:48:54,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:48:54,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997966430] [2022-07-22 20:48:54,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:48:54,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:48:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:48:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:48:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:48:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:48:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:48:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:48:54,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:48:54,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:48:54,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997966430] [2022-07-22 20:48:54,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997966430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:48:54,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:48:54,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:48:54,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774966582] [2022-07-22 20:48:54,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:48:54,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:48:54,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:48:54,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:48:54,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:48:54,719 INFO L87 Difference]: Start difference. First operand 13247 states and 18826 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:48:58,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:48:58,961 INFO L93 Difference]: Finished difference Result 38466 states and 58373 transitions. [2022-07-22 20:48:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:48:58,961 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:48:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:48:59,029 INFO L225 Difference]: With dead ends: 38466 [2022-07-22 20:48:59,030 INFO L226 Difference]: Without dead ends: 29976 [2022-07-22 20:48:59,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:48:59,053 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 1587 mSDsluCounter, 1565 mSDsCounter, 0 mSdLazyCounter, 2295 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1621 SdHoareTripleChecker+Valid, 2348 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:48:59,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1621 Valid, 2348 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2295 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 20:48:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29976 states. [2022-07-22 20:49:00,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29976 to 21280. [2022-07-22 20:49:00,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21280 states, 18790 states have (on average 1.4588078765300692) internal successors, (27411), 18892 states have internal predecessors, (27411), 1523 states have call successors, (1523), 786 states have call predecessors, (1523), 965 states have return successors, (2588), 1665 states have call predecessors, (2588), 1522 states have call successors, (2588) [2022-07-22 20:49:00,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21280 states to 21280 states and 31522 transitions. [2022-07-22 20:49:00,545 INFO L78 Accepts]: Start accepts. Automaton has 21280 states and 31522 transitions. Word has length 134 [2022-07-22 20:49:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:00,546 INFO L495 AbstractCegarLoop]: Abstraction has 21280 states and 31522 transitions. [2022-07-22 20:49:00,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 21280 states and 31522 transitions. [2022-07-22 20:49:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:49:00,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:00,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:00,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 20:49:00,560 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:00,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:00,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1501298759, now seen corresponding path program 1 times [2022-07-22 20:49:00,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:00,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381525455] [2022-07-22 20:49:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:00,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:49:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:49:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:49:00,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:00,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:00,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381525455] [2022-07-22 20:49:00,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381525455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:00,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:00,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:00,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860519237] [2022-07-22 20:49:00,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:00,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:00,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:00,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:00,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:00,640 INFO L87 Difference]: Start difference. First operand 21280 states and 31522 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:07,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:07,314 INFO L93 Difference]: Finished difference Result 68895 states and 106887 transitions. [2022-07-22 20:49:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:49:07,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:49:07,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:07,465 INFO L225 Difference]: With dead ends: 68895 [2022-07-22 20:49:07,466 INFO L226 Difference]: Without dead ends: 52372 [2022-07-22 20:49:07,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:49:07,507 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1505 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 2278 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 2343 SdHoareTripleChecker+Invalid, 2394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:07,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 2343 Invalid, 2394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2278 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 20:49:07,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52372 states. [2022-07-22 20:49:10,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52372 to 37538. [2022-07-22 20:49:10,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37538 states, 33640 states have (on average 1.4922413793103448) internal successors, (50199), 33806 states have internal predecessors, (50199), 2483 states have call successors, (2483), 1170 states have call predecessors, (2483), 1413 states have return successors, (5070), 2689 states have call predecessors, (5070), 2482 states have call successors, (5070) [2022-07-22 20:49:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37538 states to 37538 states and 57752 transitions. [2022-07-22 20:49:10,428 INFO L78 Accepts]: Start accepts. Automaton has 37538 states and 57752 transitions. Word has length 134 [2022-07-22 20:49:10,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:10,429 INFO L495 AbstractCegarLoop]: Abstraction has 37538 states and 57752 transitions. [2022-07-22 20:49:10,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:10,429 INFO L276 IsEmpty]: Start isEmpty. Operand 37538 states and 57752 transitions. [2022-07-22 20:49:10,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:49:10,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:10,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:10,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 20:49:10,445 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:10,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:10,445 INFO L85 PathProgramCache]: Analyzing trace with hash -532095287, now seen corresponding path program 1 times [2022-07-22 20:49:10,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:10,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836961050] [2022-07-22 20:49:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:10,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:10,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:10,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:49:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:10,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:10,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:49:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:10,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:49:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:10,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:10,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836961050] [2022-07-22 20:49:10,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836961050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:10,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:10,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:10,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837755467] [2022-07-22 20:49:10,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:10,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:10,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:10,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:10,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:10,554 INFO L87 Difference]: Start difference. First operand 37538 states and 57752 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:22,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:22,161 INFO L93 Difference]: Finished difference Result 130015 states and 206223 transitions. [2022-07-22 20:49:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:49:22,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:49:22,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:22,444 INFO L225 Difference]: With dead ends: 130015 [2022-07-22 20:49:22,445 INFO L226 Difference]: Without dead ends: 97234 [2022-07-22 20:49:22,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:49:22,522 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 1465 mSDsluCounter, 1568 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 2386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:22,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 2338 Invalid, 2386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 20:49:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97234 states. [2022-07-22 20:49:28,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97234 to 69987. [2022-07-22 20:49:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69987 states, 63337 states have (on average 1.5130650330770323) internal successors, (95833), 63631 states have internal predecessors, (95833), 4339 states have call successors, (4339), 1938 states have call predecessors, (4339), 2309 states have return successors, (11428), 4673 states have call predecessors, (11428), 4338 states have call successors, (11428) [2022-07-22 20:49:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69987 states to 69987 states and 111600 transitions. [2022-07-22 20:49:28,754 INFO L78 Accepts]: Start accepts. Automaton has 69987 states and 111600 transitions. Word has length 134 [2022-07-22 20:49:28,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 20:49:28,755 INFO L495 AbstractCegarLoop]: Abstraction has 69987 states and 111600 transitions. [2022-07-22 20:49:28,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 69987 states and 111600 transitions. [2022-07-22 20:49:28,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-22 20:49:28,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 20:49:28,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 20:49:28,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 20:49:28,781 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 20:49:28,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 20:49:28,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1896163335, now seen corresponding path program 1 times [2022-07-22 20:49:28,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 20:49:28,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526197787] [2022-07-22 20:49:28,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 20:49:28,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 20:49:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:28,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 20:49:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:28,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 20:49:28,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:28,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 20:49:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:28,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 20:49:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 20:49:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 20:49:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 20:49:28,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 20:49:28,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526197787] [2022-07-22 20:49:28,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526197787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 20:49:28,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 20:49:28,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 20:49:28,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692561287] [2022-07-22 20:49:28,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 20:49:28,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 20:49:28,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 20:49:28,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 20:49:28,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 20:49:28,881 INFO L87 Difference]: Start difference. First operand 69987 states and 111600 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 20:49:50,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 20:49:50,097 INFO L93 Difference]: Finished difference Result 249886 states and 406949 transitions. [2022-07-22 20:49:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 20:49:50,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-07-22 20:49:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 20:49:51,001 INFO L225 Difference]: With dead ends: 249886 [2022-07-22 20:49:51,001 INFO L226 Difference]: Without dead ends: 184656 [2022-07-22 20:49:51,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-22 20:49:51,367 INFO L413 NwaCegarLoop]: 673 mSDtfsCounter, 1380 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1404 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 20:49:51,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1404 Valid, 1791 Invalid, 2433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-22 20:49:51,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184656 states.