./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_3.cil+token_ring.04.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 37139db5f2012b0b7a96ab437e26855d856636bc4064d013c0b416905ff6e54c --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:36:43,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:36:43,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:36:43,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:36:43,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:36:43,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:36:43,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:36:43,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:36:43,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:36:43,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:36:43,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:36:43,362 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:36:43,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:36:43,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:36:43,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:36:43,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:36:43,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:36:43,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:36:43,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:36:43,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:36:43,377 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:36:43,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:36:43,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:36:43,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:36:43,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:36:43,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:36:43,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:36:43,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:36:43,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:36:43,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:36:43,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:36:43,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:36:43,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:36:43,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:36:43,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:36:43,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:36:43,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:36:43,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:36:43,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:36:43,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:36:43,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:36:43,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:36:43,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:36:43,427 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:36:43,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:36:43,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:36:43,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:36:43,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:36:43,429 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:36:43,430 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:36:43,430 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:36:43,430 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:36:43,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:36:43,431 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:36:43,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:36:43,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:36:43,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:36:43,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:36:43,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:36:43,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:36:43,433 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:36:43,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:36:43,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:36:43,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:36:43,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:36:43,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:36:43,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:36:43,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:36:43,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:36:43,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:36:43,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:36:43,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:36:43,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:36:43,435 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:36:43,435 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:36:43,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:36:43,436 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37139db5f2012b0b7a96ab437e26855d856636bc4064d013c0b416905ff6e54c [2022-07-19 20:36:43,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:36:43,729 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:36:43,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:36:43,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:36:43,733 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:36:43,734 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c [2022-07-19 20:36:43,795 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62f91712/a70341d9147b42828ec0ea7c98f6bccc/FLAGbc9c64e3b [2022-07-19 20:36:44,242 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:36:44,243 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-1.c [2022-07-19 20:36:44,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62f91712/a70341d9147b42828ec0ea7c98f6bccc/FLAGbc9c64e3b [2022-07-19 20:36:44,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b62f91712/a70341d9147b42828ec0ea7c98f6bccc [2022-07-19 20:36:44,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:36:44,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:36:44,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:36:44,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:36:44,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:36:44,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:36:44" (1/1) ... [2022-07-19 20:36:44,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60a748fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44, skipping insertion in model container [2022-07-19 20:36:44,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:36:44" (1/1) ... [2022-07-19 20:36:44,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:36:44,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:36:44,479 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_3.cil+token_ring.04.cil-1.c[911,924] [2022-07-19 20:36:44,565 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_3.cil+token_ring.04.cil-1.c[8416,8429] [2022-07-19 20:36:44,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:36:44,648 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:36:44,667 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_3.cil+token_ring.04.cil-1.c[911,924] [2022-07-19 20:36:44,694 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_3.cil+token_ring.04.cil-1.c[8416,8429] [2022-07-19 20:36:44,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:36:44,746 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:36:44,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44 WrapperNode [2022-07-19 20:36:44,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:36:44,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:36:44,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:36:44,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:36:44,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44" (1/1) ... [2022-07-19 20:36:44,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44" (1/1) ... [2022-07-19 20:36:44,837 INFO L137 Inliner]: procedures = 63, calls = 73, calls flagged for inlining = 32, calls inlined = 32, statements flattened = 614 [2022-07-19 20:36:44,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:36:44,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:36:44,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:36:44,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:36:44,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44" (1/1) ... [2022-07-19 20:36:44,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44" (1/1) ... [2022-07-19 20:36:44,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44" (1/1) ... [2022-07-19 20:36:44,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44" (1/1) ... [2022-07-19 20:36:44,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44" (1/1) ... [2022-07-19 20:36:44,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44" (1/1) ... [2022-07-19 20:36:44,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44" (1/1) ... [2022-07-19 20:36:44,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:36:44,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:36:44,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:36:44,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:36:44,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44" (1/1) ... [2022-07-19 20:36:44,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:36:44,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:36:44,928 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) [2022-07-19 20:36:44,930 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 [2022-07-19 20:36:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:36:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:36:44,965 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:36:44,965 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-19 20:36:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-19 20:36:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:36:44,967 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:36:44,967 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:36:44,968 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:36:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-19 20:36:44,968 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-19 20:36:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:36:44,968 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:36:44,968 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:36:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:36:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-19 20:36:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-19 20:36:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-19 20:36:44,969 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-19 20:36:44,969 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-19 20:36:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-19 20:36:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:36:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:36:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:36:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:36:44,970 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:36:44,970 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-19 20:36:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-19 20:36:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:36:44,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:36:44,971 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:36:44,972 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:36:45,056 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:36:45,058 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:36:45,473 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-19 20:36:45,474 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-19 20:36:45,536 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:36:45,545 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:36:45,545 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-19 20:36:45,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:36:45 BoogieIcfgContainer [2022-07-19 20:36:45,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:36:45,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:36:45,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:36:45,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:36:45,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:36:44" (1/3) ... [2022-07-19 20:36:45,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6a86a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:36:45, skipping insertion in model container [2022-07-19 20:36:45,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:36:44" (2/3) ... [2022-07-19 20:36:45,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6a86a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:36:45, skipping insertion in model container [2022-07-19 20:36:45,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:36:45" (3/3) ... [2022-07-19 20:36:45,582 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.04.cil-1.c [2022-07-19 20:36:45,594 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:36:45,594 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:36:45,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:36:45,693 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@46dfacd9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78bbcda6 [2022-07-19 20:36:45,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:36:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 299 states, 248 states have (on average 1.5846774193548387) internal successors, (393), 254 states have internal predecessors, (393), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-19 20:36:45,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:36:45,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:45,721 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] [2022-07-19 20:36:45,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:45,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:45,726 INFO L85 PathProgramCache]: Analyzing trace with hash 864909050, now seen corresponding path program 1 times [2022-07-19 20:36:45,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:45,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710772047] [2022-07-19 20:36:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:45,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:45,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:46,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:46,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:36:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:46,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:36:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:46,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:36:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:46,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:36:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:36:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:46,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:36:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:46,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:46,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710772047] [2022-07-19 20:36:46,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710772047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:46,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:46,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:36:46,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612636972] [2022-07-19 20:36:46,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:46,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:36:46,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:46,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:36:46,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:36:46,205 INFO L87 Difference]: Start difference. First operand has 299 states, 248 states have (on average 1.5846774193548387) internal successors, (393), 254 states have internal predecessors, (393), 34 states have call successors, (34), 14 states have call predecessors, (34), 14 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) 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) [2022-07-19 20:36:47,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:47,457 INFO L93 Difference]: Finished difference Result 764 states and 1182 transitions. [2022-07-19 20:36:47,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:36:47,460 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 [2022-07-19 20:36:47,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:47,481 INFO L225 Difference]: With dead ends: 764 [2022-07-19 20:36:47,481 INFO L226 Difference]: Without dead ends: 475 [2022-07-19 20:36:47,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-19 20:36:47,489 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 1058 mSDsluCounter, 1117 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:47,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 1639 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:36:47,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-07-19 20:36:47,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 405. [2022-07-19 20:36:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 333 states have (on average 1.4804804804804805) internal successors, (493), 340 states have internal predecessors, (493), 47 states have call successors, (47), 21 states have call predecessors, (47), 23 states have return successors, (56), 46 states have call predecessors, (56), 45 states have call successors, (56) [2022-07-19 20:36:47,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 596 transitions. [2022-07-19 20:36:47,569 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 596 transitions. Word has length 65 [2022-07-19 20:36:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:47,569 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 596 transitions. [2022-07-19 20:36:47,570 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) [2022-07-19 20:36:47,570 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 596 transitions. [2022-07-19 20:36:47,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:36:47,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:47,574 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] [2022-07-19 20:36:47,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:36:47,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:47,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:47,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1163677060, now seen corresponding path program 1 times [2022-07-19 20:36:47,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:47,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779339771] [2022-07-19 20:36:47,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:47,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:47,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:36:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:36:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:47,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:36:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:47,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:36:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:36:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:47,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:36:47,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:47,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:47,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779339771] [2022-07-19 20:36:47,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779339771] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:47,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:47,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:36:47,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243842223] [2022-07-19 20:36:47,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:47,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:36:47,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:47,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:36:47,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:36:47,713 INFO L87 Difference]: Start difference. First operand 405 states and 596 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-19 20:36:49,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:49,709 INFO L93 Difference]: Finished difference Result 1498 states and 2175 transitions. [2022-07-19 20:36:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:36:49,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-19 20:36:49,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:49,724 INFO L225 Difference]: With dead ends: 1498 [2022-07-19 20:36:49,724 INFO L226 Difference]: Without dead ends: 1273 [2022-07-19 20:36:49,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 20:36:49,730 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 2404 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 1760 mSolverCounterSat, 570 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2422 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 570 IncrementalHoareTripleChecker+Valid, 1760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:49,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2422 Valid, 2308 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [570 Valid, 1760 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 20:36:49,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-07-19 20:36:49,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1177. [2022-07-19 20:36:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 951 states have (on average 1.4111461619348056) internal successors, (1342), 971 states have internal predecessors, (1342), 130 states have call successors, (130), 81 states have call predecessors, (130), 94 states have return successors, (161), 127 states have call predecessors, (161), 128 states have call successors, (161) [2022-07-19 20:36:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1633 transitions. [2022-07-19 20:36:49,850 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1633 transitions. Word has length 65 [2022-07-19 20:36:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:49,850 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1633 transitions. [2022-07-19 20:36:49,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-19 20:36:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1633 transitions. [2022-07-19 20:36:49,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:36:49,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:49,863 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] [2022-07-19 20:36:49,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:36:49,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:49,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:49,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1733422016, now seen corresponding path program 1 times [2022-07-19 20:36:49,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:49,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872784001] [2022-07-19 20:36:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:49,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:49,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:49,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:49,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:36:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:49,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:36:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:49,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:36:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:36:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:50,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 20:36:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:50,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:36:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:50,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:50,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872784001] [2022-07-19 20:36:50,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872784001] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:50,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:50,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:36:50,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550742418] [2022-07-19 20:36:50,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:50,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:36:50,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:50,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:36:50,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:36:50,033 INFO L87 Difference]: Start difference. First operand 1177 states and 1633 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-07-19 20:36:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:50,827 INFO L93 Difference]: Finished difference Result 2277 states and 3157 transitions. [2022-07-19 20:36:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:36:50,828 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2022-07-19 20:36:50,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:50,834 INFO L225 Difference]: With dead ends: 2277 [2022-07-19 20:36:50,834 INFO L226 Difference]: Without dead ends: 1287 [2022-07-19 20:36:50,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:36:50,838 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 345 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:50,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 1865 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:36:50,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-07-19 20:36:50,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1217. [2022-07-19 20:36:50,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 983 states have (on average 1.3957273652085453) internal successors, (1372), 1003 states have internal predecessors, (1372), 130 states have call successors, (130), 81 states have call predecessors, (130), 102 states have return successors, (169), 135 states have call predecessors, (169), 128 states have call successors, (169) [2022-07-19 20:36:50,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1671 transitions. [2022-07-19 20:36:50,897 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1671 transitions. Word has length 66 [2022-07-19 20:36:50,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:50,898 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1671 transitions. [2022-07-19 20:36:50,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-07-19 20:36:50,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1671 transitions. [2022-07-19 20:36:50,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:36:50,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:50,899 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] [2022-07-19 20:36:50,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:36:50,900 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:50,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:50,900 INFO L85 PathProgramCache]: Analyzing trace with hash 704062718, now seen corresponding path program 1 times [2022-07-19 20:36:50,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:50,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873781270] [2022-07-19 20:36:50,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:50,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:50,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:50,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:36:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:50,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:36:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:50,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:36:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:50,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:36:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:51,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 20:36:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:51,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:36:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:51,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:51,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873781270] [2022-07-19 20:36:51,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873781270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:51,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:51,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:36:51,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135217669] [2022-07-19 20:36:51,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:51,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:36:51,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:51,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:36:51,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:36:51,022 INFO L87 Difference]: Start difference. First operand 1217 states and 1671 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 20:36:52,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:52,755 INFO L93 Difference]: Finished difference Result 3887 states and 5372 transitions. [2022-07-19 20:36:52,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:36:52,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-19 20:36:52,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:52,764 INFO L225 Difference]: With dead ends: 3887 [2022-07-19 20:36:52,765 INFO L226 Difference]: Without dead ends: 1607 [2022-07-19 20:36:52,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 20:36:52,778 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 2559 mSDsluCounter, 1629 mSDsCounter, 0 mSdLazyCounter, 1652 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2577 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 2260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 1652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:52,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2577 Valid, 2191 Invalid, 2260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 1652 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:36:52,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2022-07-19 20:36:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1483. [2022-07-19 20:36:52,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1173 states have (on average 1.3529411764705883) internal successors, (1587), 1197 states have internal predecessors, (1587), 170 states have call successors, (170), 109 states have call predecessors, (170), 138 states have return successors, (221), 179 states have call predecessors, (221), 168 states have call successors, (221) [2022-07-19 20:36:52,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1978 transitions. [2022-07-19 20:36:52,854 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 1978 transitions. Word has length 66 [2022-07-19 20:36:52,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:52,855 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 1978 transitions. [2022-07-19 20:36:52,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 20:36:52,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 1978 transitions. [2022-07-19 20:36:52,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:36:52,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:52,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:52,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:36:52,858 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:52,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:52,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1975322897, now seen corresponding path program 1 times [2022-07-19 20:36:52,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:52,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118773457] [2022-07-19 20:36:52,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:52,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:52,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:52,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:36:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:52,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:36:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:52,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:36:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:52,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:36:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:52,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:36:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:52,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:36:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:52,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:36:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:53,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:36:53,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:53,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118773457] [2022-07-19 20:36:53,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118773457] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:53,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:53,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:36:53,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342998833] [2022-07-19 20:36:53,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:53,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:36:53,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:53,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:36:53,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:36:53,003 INFO L87 Difference]: Start difference. First operand 1483 states and 1978 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-19 20:36:53,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:53,767 INFO L93 Difference]: Finished difference Result 2925 states and 3915 transitions. [2022-07-19 20:36:53,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:36:53,767 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2022-07-19 20:36:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:53,775 INFO L225 Difference]: With dead ends: 2925 [2022-07-19 20:36:53,775 INFO L226 Difference]: Without dead ends: 1629 [2022-07-19 20:36:53,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:36:53,779 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 340 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:53,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1812 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 20:36:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-07-19 20:36:53,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1523. [2022-07-19 20:36:53,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1205 states have (on average 1.3385892116182572) internal successors, (1613), 1229 states have internal predecessors, (1613), 170 states have call successors, (170), 109 states have call predecessors, (170), 146 states have return successors, (229), 187 states have call predecessors, (229), 168 states have call successors, (229) [2022-07-19 20:36:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2012 transitions. [2022-07-19 20:36:53,871 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2012 transitions. Word has length 91 [2022-07-19 20:36:53,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:53,872 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2012 transitions. [2022-07-19 20:36:53,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-19 20:36:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2012 transitions. [2022-07-19 20:36:53,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:36:53,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:53,874 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:53,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:36:53,875 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:53,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:53,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1531422223, now seen corresponding path program 1 times [2022-07-19 20:36:53,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:53,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348724264] [2022-07-19 20:36:53,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:53,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:53,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:36:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:53,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:36:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:53,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:36:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:53,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:36:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:53,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:36:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:53,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:36:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:53,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:36:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:36:53,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:53,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348724264] [2022-07-19 20:36:53,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348724264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:53,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:53,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:36:53,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443875172] [2022-07-19 20:36:53,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:53,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:36:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:53,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:36:53,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:36:53,978 INFO L87 Difference]: Start difference. First operand 1523 states and 2012 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-19 20:36:54,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:54,679 INFO L93 Difference]: Finished difference Result 3315 states and 4378 transitions. [2022-07-19 20:36:54,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:36:54,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2022-07-19 20:36:54,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:54,688 INFO L225 Difference]: With dead ends: 3315 [2022-07-19 20:36:54,688 INFO L226 Difference]: Without dead ends: 2053 [2022-07-19 20:36:54,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-07-19 20:36:54,692 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 786 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:54,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1362 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:36:54,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2022-07-19 20:36:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 1877. [2022-07-19 20:36:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1487 states have (on average 1.3113651647612643) internal successors, (1950), 1512 states have internal predecessors, (1950), 210 states have call successors, (210), 139 states have call predecessors, (210), 178 states have return successors, (270), 228 states have call predecessors, (270), 208 states have call successors, (270) [2022-07-19 20:36:54,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2430 transitions. [2022-07-19 20:36:54,777 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2430 transitions. Word has length 91 [2022-07-19 20:36:54,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:54,777 INFO L495 AbstractCegarLoop]: Abstraction has 1877 states and 2430 transitions. [2022-07-19 20:36:54,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-19 20:36:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2430 transitions. [2022-07-19 20:36:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:36:54,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:54,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:54,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:36:54,779 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:54,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:54,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1546940941, now seen corresponding path program 1 times [2022-07-19 20:36:54,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:54,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683100961] [2022-07-19 20:36:54,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:54,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:54,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:54,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:36:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:54,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:36:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:54,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:36:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:54,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:36:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:36:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:54,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:36:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:36:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:36:54,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:54,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683100961] [2022-07-19 20:36:54,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683100961] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:54,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:54,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:36:54,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641497356] [2022-07-19 20:36:54,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:54,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:36:54,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:54,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:36:54,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:36:54,858 INFO L87 Difference]: Start difference. First operand 1877 states and 2430 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-07-19 20:36:55,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:55,728 INFO L93 Difference]: Finished difference Result 3404 states and 4394 transitions. [2022-07-19 20:36:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 20:36:55,728 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 91 [2022-07-19 20:36:55,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:55,738 INFO L225 Difference]: With dead ends: 3404 [2022-07-19 20:36:55,739 INFO L226 Difference]: Without dead ends: 1951 [2022-07-19 20:36:55,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-19 20:36:55,743 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 836 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:55,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 1505 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 20:36:55,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-07-19 20:36:55,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1656. [2022-07-19 20:36:55,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1319 states have (on average 1.3131159969673996) internal successors, (1732), 1339 states have internal predecessors, (1732), 182 states have call successors, (182), 120 states have call predecessors, (182), 153 states have return successors, (230), 198 states have call predecessors, (230), 180 states have call successors, (230) [2022-07-19 20:36:55,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2144 transitions. [2022-07-19 20:36:55,841 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2144 transitions. Word has length 91 [2022-07-19 20:36:55,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:55,841 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 2144 transitions. [2022-07-19 20:36:55,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-07-19 20:36:55,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2144 transitions. [2022-07-19 20:36:55,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:36:55,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:55,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:55,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:36:55,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:55,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:55,844 INFO L85 PathProgramCache]: Analyzing trace with hash 392221105, now seen corresponding path program 1 times [2022-07-19 20:36:55,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:55,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124403567] [2022-07-19 20:36:55,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:55,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:55,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:55,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:36:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:55,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:36:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:55,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:36:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:55,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:36:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:55,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:36:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:55,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:36:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:55,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:36:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:36:55,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:55,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124403567] [2022-07-19 20:36:55,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124403567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:55,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:55,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:36:55,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897755270] [2022-07-19 20:36:55,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:55,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:36:55,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:55,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:36:55,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:36:55,913 INFO L87 Difference]: Start difference. First operand 1656 states and 2144 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-19 20:36:56,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:56,397 INFO L93 Difference]: Finished difference Result 4808 states and 6256 transitions. [2022-07-19 20:36:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:36:56,398 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-19 20:36:56,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:56,413 INFO L225 Difference]: With dead ends: 4808 [2022-07-19 20:36:56,413 INFO L226 Difference]: Without dead ends: 3339 [2022-07-19 20:36:56,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:36:56,419 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 1137 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:56,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 862 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:36:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2022-07-19 20:36:56,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3125. [2022-07-19 20:36:56,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3125 states, 2468 states have (on average 1.280388978930308) internal successors, (3160), 2517 states have internal predecessors, (3160), 343 states have call successors, (343), 233 states have call predecessors, (343), 312 states have return successors, (513), 377 states have call predecessors, (513), 341 states have call successors, (513) [2022-07-19 20:36:56,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4016 transitions. [2022-07-19 20:36:56,572 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4016 transitions. Word has length 91 [2022-07-19 20:36:56,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:56,572 INFO L495 AbstractCegarLoop]: Abstraction has 3125 states and 4016 transitions. [2022-07-19 20:36:56,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-19 20:36:56,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4016 transitions. [2022-07-19 20:36:56,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:36:56,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:56,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:36:56,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:36:56,575 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:56,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:56,575 INFO L85 PathProgramCache]: Analyzing trace with hash -665616973, now seen corresponding path program 1 times [2022-07-19 20:36:56,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:56,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623432406] [2022-07-19 20:36:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:56,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:56,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:56,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:36:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:36:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:56,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:36:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:36:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:56,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:36:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:56,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:36:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:56,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:36:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:56,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:36:56,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:56,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623432406] [2022-07-19 20:36:56,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623432406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:56,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:56,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:36:56,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725665879] [2022-07-19 20:36:56,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:56,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:36:56,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:36:56,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:36:56,630 INFO L87 Difference]: Start difference. First operand 3125 states and 4016 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:36:57,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:57,028 INFO L93 Difference]: Finished difference Result 4709 states and 6000 transitions. [2022-07-19 20:36:57,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 20:36:57,029 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-19 20:36:57,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:57,037 INFO L225 Difference]: With dead ends: 4709 [2022-07-19 20:36:57,038 INFO L226 Difference]: Without dead ends: 1771 [2022-07-19 20:36:57,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:36:57,046 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 458 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:57,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1071 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 20:36:57,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2022-07-19 20:36:57,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1656. [2022-07-19 20:36:57,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1319 states have (on average 1.2850644427596665) internal successors, (1695), 1339 states have internal predecessors, (1695), 182 states have call successors, (182), 120 states have call predecessors, (182), 153 states have return successors, (230), 198 states have call predecessors, (230), 180 states have call successors, (230) [2022-07-19 20:36:57,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2107 transitions. [2022-07-19 20:36:57,123 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2107 transitions. Word has length 91 [2022-07-19 20:36:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:57,123 INFO L495 AbstractCegarLoop]: Abstraction has 1656 states and 2107 transitions. [2022-07-19 20:36:57,123 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:36:57,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2107 transitions. [2022-07-19 20:36:57,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 20:36:57,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:57,125 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-07-19 20:36:57,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:36:57,126 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:57,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:57,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1134197990, now seen corresponding path program 1 times [2022-07-19 20:36:57,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:57,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820118909] [2022-07-19 20:36:57,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:57,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:57,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:57,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:36:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:57,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:36:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:57,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:36:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:36:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:36:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:57,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:36:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:57,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 20:36:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:57,210 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:36:57,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:57,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820118909] [2022-07-19 20:36:57,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820118909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:57,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:57,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:36:57,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068823100] [2022-07-19 20:36:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:57,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:36:57,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:36:57,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:36:57,212 INFO L87 Difference]: Start difference. First operand 1656 states and 2107 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) [2022-07-19 20:36:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:58,350 INFO L93 Difference]: Finished difference Result 4074 states and 5190 transitions. [2022-07-19 20:36:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 20:36:58,350 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 92 [2022-07-19 20:36:58,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:58,361 INFO L225 Difference]: With dead ends: 4074 [2022-07-19 20:36:58,362 INFO L226 Difference]: Without dead ends: 2454 [2022-07-19 20:36:58,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-07-19 20:36:58,367 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1715 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 464 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1752 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 464 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:58,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1752 Valid, 1367 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [464 Valid, 1028 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:36:58,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2022-07-19 20:36:58,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2277. [2022-07-19 20:36:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1786 states have (on average 1.2525195968645018) internal successors, (2237), 1814 states have internal predecessors, (2237), 259 states have call successors, (259), 168 states have call predecessors, (259), 230 states have return successors, (361), 296 states have call predecessors, (361), 257 states have call successors, (361) [2022-07-19 20:36:58,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2857 transitions. [2022-07-19 20:36:58,488 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2857 transitions. Word has length 92 [2022-07-19 20:36:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:58,489 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 2857 transitions. [2022-07-19 20:36:58,490 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) [2022-07-19 20:36:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2857 transitions. [2022-07-19 20:36:58,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:36:58,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:58,491 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] [2022-07-19 20:36:58,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:36:58,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:58,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:58,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1197403432, now seen corresponding path program 1 times [2022-07-19 20:36:58,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:58,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180796174] [2022-07-19 20:36:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:58,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:58,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:58,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:36:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:36:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:58,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:36:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:58,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:36:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:58,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:58,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180796174] [2022-07-19 20:36:58,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180796174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:58,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:58,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:36:58,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820301373] [2022-07-19 20:36:58,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:58,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:36:58,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:58,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:36:58,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:36:58,556 INFO L87 Difference]: Start difference. First operand 2277 states and 2857 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-19 20:36:59,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:36:59,211 INFO L93 Difference]: Finished difference Result 2498 states and 3201 transitions. [2022-07-19 20:36:59,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:36:59,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 90 [2022-07-19 20:36:59,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:36:59,221 INFO L225 Difference]: With dead ends: 2498 [2022-07-19 20:36:59,221 INFO L226 Difference]: Without dead ends: 2331 [2022-07-19 20:36:59,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:36:59,223 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 536 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 20:36:59,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 806 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 20:36:59,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2331 states. [2022-07-19 20:36:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2331 to 2277. [2022-07-19 20:36:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1786 states have (on average 1.2519596864501679) internal successors, (2236), 1814 states have internal predecessors, (2236), 259 states have call successors, (259), 168 states have call predecessors, (259), 230 states have return successors, (361), 296 states have call predecessors, (361), 257 states have call successors, (361) [2022-07-19 20:36:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 2856 transitions. [2022-07-19 20:36:59,346 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 2856 transitions. Word has length 90 [2022-07-19 20:36:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:36:59,347 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 2856 transitions. [2022-07-19 20:36:59,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-07-19 20:36:59,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 2856 transitions. [2022-07-19 20:36:59,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:36:59,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:36:59,348 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] [2022-07-19 20:36:59,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 20:36:59,349 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:36:59,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:36:59,349 INFO L85 PathProgramCache]: Analyzing trace with hash 358369770, now seen corresponding path program 1 times [2022-07-19 20:36:59,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:36:59,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97121660] [2022-07-19 20:36:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:36:59,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:36:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:59,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:36:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:59,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:36:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:36:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:36:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:59,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:36:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:36:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:36:59,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:36:59,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97121660] [2022-07-19 20:36:59,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97121660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:36:59,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:36:59,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:36:59,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643480758] [2022-07-19 20:36:59,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:36:59,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:36:59,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:36:59,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:36:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:36:59,429 INFO L87 Difference]: Start difference. First operand 2277 states and 2856 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-19 20:37:00,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:00,483 INFO L93 Difference]: Finished difference Result 2717 states and 3543 transitions. [2022-07-19 20:37:00,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:37:00,484 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 90 [2022-07-19 20:37:00,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:00,494 INFO L225 Difference]: With dead ends: 2717 [2022-07-19 20:37:00,495 INFO L226 Difference]: Without dead ends: 2552 [2022-07-19 20:37:00,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:37:00,498 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 871 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:00,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [894 Valid, 1059 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:37:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2552 states. [2022-07-19 20:37:00,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2552 to 2445. [2022-07-19 20:37:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2445 states, 1934 states have (on average 1.2740434332988624) internal successors, (2464), 1963 states have internal predecessors, (2464), 272 states have call successors, (272), 174 states have call predecessors, (272), 237 states have return successors, (377), 309 states have call predecessors, (377), 270 states have call successors, (377) [2022-07-19 20:37:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2445 states to 2445 states and 3113 transitions. [2022-07-19 20:37:00,651 INFO L78 Accepts]: Start accepts. Automaton has 2445 states and 3113 transitions. Word has length 90 [2022-07-19 20:37:00,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:00,651 INFO L495 AbstractCegarLoop]: Abstraction has 2445 states and 3113 transitions. [2022-07-19 20:37:00,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-07-19 20:37:00,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2445 states and 3113 transitions. [2022-07-19 20:37:00,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:37:00,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:00,654 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] [2022-07-19 20:37:00,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:37:00,654 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:00,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:00,655 INFO L85 PathProgramCache]: Analyzing trace with hash -816289682, now seen corresponding path program 1 times [2022-07-19 20:37:00,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:00,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008870246] [2022-07-19 20:37:00,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:00,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:00,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:00,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:37:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:00,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:37:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:37:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:00,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:37:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:00,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:00,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008870246] [2022-07-19 20:37:00,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008870246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:00,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:00,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487344798] [2022-07-19 20:37:00,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:00,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:00,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:00,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:00,740 INFO L87 Difference]: Start difference. First operand 2445 states and 3113 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:02,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:02,027 INFO L93 Difference]: Finished difference Result 3110 states and 4145 transitions. [2022-07-19 20:37:02,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:37:02,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-19 20:37:02,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:02,039 INFO L225 Difference]: With dead ends: 3110 [2022-07-19 20:37:02,040 INFO L226 Difference]: Without dead ends: 2777 [2022-07-19 20:37:02,042 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 [2022-07-19 20:37:02,043 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 868 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:02,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 1652 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:37:02,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2777 states. [2022-07-19 20:37:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2777 to 2602. [2022-07-19 20:37:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2071 states have (on average 1.2892322549492998) internal successors, (2670), 2101 states have internal predecessors, (2670), 285 states have call successors, (285), 180 states have call predecessors, (285), 244 states have return successors, (392), 323 states have call predecessors, (392), 283 states have call successors, (392) [2022-07-19 20:37:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 3347 transitions. [2022-07-19 20:37:02,177 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 3347 transitions. Word has length 90 [2022-07-19 20:37:02,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:02,177 INFO L495 AbstractCegarLoop]: Abstraction has 2602 states and 3347 transitions. [2022-07-19 20:37:02,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:02,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 3347 transitions. [2022-07-19 20:37:02,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:37:02,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:02,179 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] [2022-07-19 20:37:02,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:37:02,180 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:02,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:02,180 INFO L85 PathProgramCache]: Analyzing trace with hash 70933164, now seen corresponding path program 1 times [2022-07-19 20:37:02,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:02,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714543624] [2022-07-19 20:37:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:02,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:02,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:02,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:37:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:02,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:37:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:02,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:37:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:37:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:02,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:02,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714543624] [2022-07-19 20:37:02,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714543624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:02,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:02,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:02,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232162248] [2022-07-19 20:37:02,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:02,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:02,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:02,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:02,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:02,274 INFO L87 Difference]: Start difference. First operand 2602 states and 3347 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:03,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:03,646 INFO L93 Difference]: Finished difference Result 3688 states and 5027 transitions. [2022-07-19 20:37:03,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:37:03,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-19 20:37:03,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:03,673 INFO L225 Difference]: With dead ends: 3688 [2022-07-19 20:37:03,673 INFO L226 Difference]: Without dead ends: 3198 [2022-07-19 20:37:03,676 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 [2022-07-19 20:37:03,677 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 865 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 1644 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:03,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 1644 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:37:03,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2022-07-19 20:37:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 2917. [2022-07-19 20:37:03,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2346 states have (on average 1.314151747655584) internal successors, (3083), 2378 states have internal predecessors, (3083), 311 states have call successors, (311), 192 states have call predecessors, (311), 258 states have return successors, (426), 351 states have call predecessors, (426), 309 states have call successors, (426) [2022-07-19 20:37:03,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3820 transitions. [2022-07-19 20:37:03,820 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3820 transitions. Word has length 90 [2022-07-19 20:37:03,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:03,821 INFO L495 AbstractCegarLoop]: Abstraction has 2917 states and 3820 transitions. [2022-07-19 20:37:03,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:03,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3820 transitions. [2022-07-19 20:37:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:37:03,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:03,823 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] [2022-07-19 20:37:03,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:37:03,823 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:03,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:03,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1840109394, now seen corresponding path program 1 times [2022-07-19 20:37:03,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:03,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434721616] [2022-07-19 20:37:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:03,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:03,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:37:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:03,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:37:03,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:03,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:37:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:03,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:37:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:03,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:03,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434721616] [2022-07-19 20:37:03,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434721616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:03,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:03,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:03,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422434798] [2022-07-19 20:37:03,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:03,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:03,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:03,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:03,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:03,903 INFO L87 Difference]: Start difference. First operand 2917 states and 3820 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:05,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:05,252 INFO L93 Difference]: Finished difference Result 4803 states and 6724 transitions. [2022-07-19 20:37:05,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:37:05,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-19 20:37:05,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:05,268 INFO L225 Difference]: With dead ends: 4803 [2022-07-19 20:37:05,268 INFO L226 Difference]: Without dead ends: 3998 [2022-07-19 20:37:05,274 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 [2022-07-19 20:37:05,275 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 861 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1521 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:05,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1640 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1521 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:37:05,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2022-07-19 20:37:05,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3548. [2022-07-19 20:37:05,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 2897 states have (on average 1.349326889886089) internal successors, (3909), 2933 states have internal predecessors, (3909), 363 states have call successors, (363), 216 states have call predecessors, (363), 286 states have return successors, (500), 407 states have call predecessors, (500), 361 states have call successors, (500) [2022-07-19 20:37:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 4772 transitions. [2022-07-19 20:37:05,490 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 4772 transitions. Word has length 90 [2022-07-19 20:37:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:05,491 INFO L495 AbstractCegarLoop]: Abstraction has 3548 states and 4772 transitions. [2022-07-19 20:37:05,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:05,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 4772 transitions. [2022-07-19 20:37:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:37:05,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:05,493 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] [2022-07-19 20:37:05,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:37:05,493 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:05,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1763208596, now seen corresponding path program 1 times [2022-07-19 20:37:05,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:05,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353068612] [2022-07-19 20:37:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:05,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:05,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:05,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:37:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:37:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:05,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:37:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:37:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:05,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:05,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353068612] [2022-07-19 20:37:05,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353068612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:05,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:05,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:05,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610372743] [2022-07-19 20:37:05,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:05,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:05,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:05,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:05,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:05,581 INFO L87 Difference]: Start difference. First operand 3548 states and 4772 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:06,832 INFO L93 Difference]: Finished difference Result 7032 states and 10134 transitions. [2022-07-19 20:37:06,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:37:06,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-19 20:37:06,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:06,851 INFO L225 Difference]: With dead ends: 7032 [2022-07-19 20:37:06,852 INFO L226 Difference]: Without dead ends: 5596 [2022-07-19 20:37:06,857 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 [2022-07-19 20:37:06,857 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 911 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:06,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1261 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:37:06,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2022-07-19 20:37:07,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 4815. [2022-07-19 20:37:07,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4815 states, 4004 states have (on average 1.3903596403596403) internal successors, (5567), 4048 states have internal predecessors, (5567), 467 states have call successors, (467), 264 states have call predecessors, (467), 342 states have return successors, (666), 519 states have call predecessors, (666), 465 states have call successors, (666) [2022-07-19 20:37:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4815 states to 4815 states and 6700 transitions. [2022-07-19 20:37:07,134 INFO L78 Accepts]: Start accepts. Automaton has 4815 states and 6700 transitions. Word has length 90 [2022-07-19 20:37:07,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:07,134 INFO L495 AbstractCegarLoop]: Abstraction has 4815 states and 6700 transitions. [2022-07-19 20:37:07,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:07,134 INFO L276 IsEmpty]: Start isEmpty. Operand 4815 states and 6700 transitions. [2022-07-19 20:37:07,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:37:07,137 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:07,138 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] [2022-07-19 20:37:07,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:37:07,138 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:07,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:07,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1564408046, now seen corresponding path program 1 times [2022-07-19 20:37:07,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:07,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334036195] [2022-07-19 20:37:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:07,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:07,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:37:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:37:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:37:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:07,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:37:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:07,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:07,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:07,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334036195] [2022-07-19 20:37:07,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334036195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:07,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:07,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:07,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558670224] [2022-07-19 20:37:07,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:07,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:07,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:07,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:07,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:07,210 INFO L87 Difference]: Start difference. First operand 4815 states and 6700 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:08,937 INFO L93 Difference]: Finished difference Result 12322 states and 18250 transitions. [2022-07-19 20:37:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:37:08,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-19 20:37:08,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:08,967 INFO L225 Difference]: With dead ends: 12322 [2022-07-19 20:37:08,967 INFO L226 Difference]: Without dead ends: 9619 [2022-07-19 20:37:08,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:37:08,978 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 989 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:08,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 1612 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:37:08,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9619 states. [2022-07-19 20:37:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9619 to 7251. [2022-07-19 20:37:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7251 states, 6136 states have (on average 1.430084745762712) internal successors, (8775), 6196 states have internal predecessors, (8775), 659 states have call successors, (659), 360 states have call predecessors, (659), 454 states have return successors, (1036), 727 states have call predecessors, (1036), 657 states have call successors, (1036) [2022-07-19 20:37:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7251 states to 7251 states and 10470 transitions. [2022-07-19 20:37:09,445 INFO L78 Accepts]: Start accepts. Automaton has 7251 states and 10470 transitions. Word has length 90 [2022-07-19 20:37:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:09,446 INFO L495 AbstractCegarLoop]: Abstraction has 7251 states and 10470 transitions. [2022-07-19 20:37:09,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 7251 states and 10470 transitions. [2022-07-19 20:37:09,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:37:09,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:09,451 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] [2022-07-19 20:37:09,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:37:09,451 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:09,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:09,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1071781872, now seen corresponding path program 1 times [2022-07-19 20:37:09,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:09,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188212348] [2022-07-19 20:37:09,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:09,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:09,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:37:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:37:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:37:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:09,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:37:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:09,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:09,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188212348] [2022-07-19 20:37:09,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188212348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:09,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:09,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:09,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851956598] [2022-07-19 20:37:09,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:09,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:09,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:09,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:09,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:09,527 INFO L87 Difference]: Start difference. First operand 7251 states and 10470 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:11,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:11,433 INFO L93 Difference]: Finished difference Result 21288 states and 32222 transitions. [2022-07-19 20:37:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:37:11,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-19 20:37:11,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:11,527 INFO L225 Difference]: With dead ends: 21288 [2022-07-19 20:37:11,527 INFO L226 Difference]: Without dead ends: 16149 [2022-07-19 20:37:11,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:37:11,546 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 877 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:11,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 1655 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:37:11,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16149 states. [2022-07-19 20:37:12,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16149 to 12184. [2022-07-19 20:37:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12184 states, 10477 states have (on average 1.46310966879832) internal successors, (15329), 10569 states have internal predecessors, (15329), 1027 states have call successors, (1027), 552 states have call predecessors, (1027), 678 states have return successors, (1922), 1127 states have call predecessors, (1922), 1025 states have call successors, (1922) [2022-07-19 20:37:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12184 states to 12184 states and 18278 transitions. [2022-07-19 20:37:12,401 INFO L78 Accepts]: Start accepts. Automaton has 12184 states and 18278 transitions. Word has length 90 [2022-07-19 20:37:12,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:12,401 INFO L495 AbstractCegarLoop]: Abstraction has 12184 states and 18278 transitions. [2022-07-19 20:37:12,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:12,402 INFO L276 IsEmpty]: Start isEmpty. Operand 12184 states and 18278 transitions. [2022-07-19 20:37:12,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:37:12,410 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:12,410 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] [2022-07-19 20:37:12,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:37:12,410 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:12,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:12,411 INFO L85 PathProgramCache]: Analyzing trace with hash 2025722030, now seen corresponding path program 1 times [2022-07-19 20:37:12,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:12,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511637267] [2022-07-19 20:37:12,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:12,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:12,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:12,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:37:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:37:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:12,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:37:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:12,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:37:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:12,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:12,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511637267] [2022-07-19 20:37:12,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511637267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:12,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:12,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:12,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532501440] [2022-07-19 20:37:12,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:12,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:12,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:12,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:12,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:12,482 INFO L87 Difference]: Start difference. First operand 12184 states and 18278 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:14,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:14,890 INFO L93 Difference]: Finished difference Result 38835 states and 60220 transitions. [2022-07-19 20:37:14,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:37:14,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-19 20:37:14,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:14,986 INFO L225 Difference]: With dead ends: 38835 [2022-07-19 20:37:14,986 INFO L226 Difference]: Without dead ends: 28763 [2022-07-19 20:37:15,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:37:15,028 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 910 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:15,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 1606 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:37:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28763 states. [2022-07-19 20:37:16,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28763 to 22017. [2022-07-19 20:37:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22017 states, 19158 states have (on average 1.485906670842468) internal successors, (28467), 19314 states have internal predecessors, (28467), 1731 states have call successors, (1731), 936 states have call predecessors, (1731), 1126 states have return successors, (4148), 1895 states have call predecessors, (4148), 1729 states have call successors, (4148) [2022-07-19 20:37:16,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22017 states to 22017 states and 34346 transitions. [2022-07-19 20:37:16,454 INFO L78 Accepts]: Start accepts. Automaton has 22017 states and 34346 transitions. Word has length 90 [2022-07-19 20:37:16,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:16,454 INFO L495 AbstractCegarLoop]: Abstraction has 22017 states and 34346 transitions. [2022-07-19 20:37:16,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:16,455 INFO L276 IsEmpty]: Start isEmpty. Operand 22017 states and 34346 transitions. [2022-07-19 20:37:16,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:37:16,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:16,473 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] [2022-07-19 20:37:16,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:37:16,475 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:16,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:16,475 INFO L85 PathProgramCache]: Analyzing trace with hash 809568304, now seen corresponding path program 1 times [2022-07-19 20:37:16,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:16,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941759256] [2022-07-19 20:37:16,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:16,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:16,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:16,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:37:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:16,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:37:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:16,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:37:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:16,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:37:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:16,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:16,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941759256] [2022-07-19 20:37:16,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941759256] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:16,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:16,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:16,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476198035] [2022-07-19 20:37:16,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:16,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:16,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:16,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:16,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:16,542 INFO L87 Difference]: Start difference. First operand 22017 states and 34346 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:20,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:20,221 INFO L93 Difference]: Finished difference Result 72746 states and 116274 transitions. [2022-07-19 20:37:20,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:37:20,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-19 20:37:20,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:20,476 INFO L225 Difference]: With dead ends: 72746 [2022-07-19 20:37:20,476 INFO L226 Difference]: Without dead ends: 52841 [2022-07-19 20:37:20,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:37:20,552 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 870 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1459 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 1602 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:20,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 1602 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1459 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:37:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52841 states. [2022-07-19 20:37:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52841 to 41618. [2022-07-19 20:37:23,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41618 states, 36519 states have (on average 1.50072564966182) internal successors, (54805), 36803 states have internal predecessors, (54805), 3075 states have call successors, (3075), 1704 states have call predecessors, (3075), 2022 states have return successors, (9994), 3367 states have call predecessors, (9994), 3073 states have call successors, (9994) [2022-07-19 20:37:23,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41618 states to 41618 states and 67874 transitions. [2022-07-19 20:37:23,253 INFO L78 Accepts]: Start accepts. Automaton has 41618 states and 67874 transitions. Word has length 90 [2022-07-19 20:37:23,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:23,253 INFO L495 AbstractCegarLoop]: Abstraction has 41618 states and 67874 transitions. [2022-07-19 20:37:23,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:23,254 INFO L276 IsEmpty]: Start isEmpty. Operand 41618 states and 67874 transitions. [2022-07-19 20:37:23,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:37:23,284 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:23,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:23,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:37:23,285 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:23,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:23,286 INFO L85 PathProgramCache]: Analyzing trace with hash 77600878, now seen corresponding path program 1 times [2022-07-19 20:37:23,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:23,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177352798] [2022-07-19 20:37:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:23,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:23,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:37:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:37:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:37:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:23,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:37:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:23,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:23,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177352798] [2022-07-19 20:37:23,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177352798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:23,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:23,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:23,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858845329] [2022-07-19 20:37:23,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:23,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:23,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:23,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:23,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:23,381 INFO L87 Difference]: Start difference. First operand 41618 states and 67874 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:29,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:29,539 INFO L93 Difference]: Finished difference Result 110455 states and 176651 transitions. [2022-07-19 20:37:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:37:29,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-19 20:37:29,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:29,801 INFO L225 Difference]: With dead ends: 110455 [2022-07-19 20:37:29,801 INFO L226 Difference]: Without dead ends: 70950 [2022-07-19 20:37:29,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-07-19 20:37:29,907 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 564 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:29,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 1346 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:37:29,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70950 states. [2022-07-19 20:37:32,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70950 to 42389. [2022-07-19 20:37:32,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42389 states, 37290 states have (on average 1.4903727540895682) internal successors, (55576), 37574 states have internal predecessors, (55576), 3075 states have call successors, (3075), 1704 states have call predecessors, (3075), 2022 states have return successors, (9994), 3367 states have call predecessors, (9994), 3073 states have call successors, (9994) [2022-07-19 20:37:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42389 states to 42389 states and 68645 transitions. [2022-07-19 20:37:32,746 INFO L78 Accepts]: Start accepts. Automaton has 42389 states and 68645 transitions. Word has length 90 [2022-07-19 20:37:32,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:32,747 INFO L495 AbstractCegarLoop]: Abstraction has 42389 states and 68645 transitions. [2022-07-19 20:37:32,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:32,747 INFO L276 IsEmpty]: Start isEmpty. Operand 42389 states and 68645 transitions. [2022-07-19 20:37:32,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 20:37:32,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:32,774 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] [2022-07-19 20:37:32,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:37:32,774 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:32,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1338518128, now seen corresponding path program 1 times [2022-07-19 20:37:32,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:32,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276114102] [2022-07-19 20:37:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:32,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:37:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:37:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:37:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:37:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:37:32,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:32,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276114102] [2022-07-19 20:37:32,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276114102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:32,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:37:32,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:37:32,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937468037] [2022-07-19 20:37:32,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:32,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:37:32,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:37:32,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:37:32,887 INFO L87 Difference]: Start difference. First operand 42389 states and 68645 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:37:43,334 INFO L93 Difference]: Finished difference Result 182432 states and 299479 transitions. [2022-07-19 20:37:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 20:37:43,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 90 [2022-07-19 20:37:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:37:44,114 INFO L225 Difference]: With dead ends: 182432 [2022-07-19 20:37:44,114 INFO L226 Difference]: Without dead ends: 142156 [2022-07-19 20:37:44,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-07-19 20:37:44,258 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 2045 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2075 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:37:44,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2075 Valid, 1487 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1552 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 20:37:44,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142156 states. [2022-07-19 20:37:51,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142156 to 117987. [2022-07-19 20:37:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117987 states, 103678 states have (on average 1.4900846852755647) internal successors, (154489), 104861 states have internal predecessors, (154489), 8683 states have call successors, (8683), 4794 states have call predecessors, (8683), 5624 states have return successors, (28611), 8588 states have call predecessors, (28611), 8681 states have call successors, (28611) [2022-07-19 20:37:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117987 states to 117987 states and 191783 transitions. [2022-07-19 20:37:52,333 INFO L78 Accepts]: Start accepts. Automaton has 117987 states and 191783 transitions. Word has length 90 [2022-07-19 20:37:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:37:52,334 INFO L495 AbstractCegarLoop]: Abstraction has 117987 states and 191783 transitions. [2022-07-19 20:37:52,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-07-19 20:37:52,334 INFO L276 IsEmpty]: Start isEmpty. Operand 117987 states and 191783 transitions. [2022-07-19 20:37:52,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 20:37:52,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:37:52,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:37:52,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:37:52,560 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:37:52,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:37:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash 291045078, now seen corresponding path program 1 times [2022-07-19 20:37:52,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:37:52,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865066238] [2022-07-19 20:37:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:52,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:37:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:37:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 20:37:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 20:37:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 20:37:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:37:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 20:37:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-07-19 20:37:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 20:37:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 20:37:52,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:37:52,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865066238] [2022-07-19 20:37:52,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865066238] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:37:52,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41125239] [2022-07-19 20:37:52,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:37:52,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:37:52,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:37:52,657 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) [2022-07-19 20:37:52,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 20:37:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:37:52,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:37:52,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:37:52,882 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 20:37:52,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:37:52,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41125239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:37:52,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:37:52,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-07-19 20:37:52,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461577803] [2022-07-19 20:37:52,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:37:52,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:37:52,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:37:52,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:37:52,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:37:52,884 INFO L87 Difference]: Start difference. First operand 117987 states and 191783 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)