./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.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 dc8dc9bdb034e5a733c81076f9e42c36caa1eb5cb68a77287d3420bd964c5f5a --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:13:58,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:13:58,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:13:58,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:13:58,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:13:58,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:13:58,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:13:58,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:13:58,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:13:58,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:13:58,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:13:58,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:13:58,809 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:13:58,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:13:58,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:13:58,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:13:58,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:13:58,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:13:58,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:13:58,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:13:58,821 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:13:58,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:13:58,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:13:58,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:13:58,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:13:58,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:13:58,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:13:58,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:13:58,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:13:58,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:13:58,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:13:58,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:13:58,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:13:58,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:13:58,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:13:58,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:13:58,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:13:58,834 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:13:58,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:13:58,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:13:58,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:13:58,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:13:58,838 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:13:58,858 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:13:58,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:13:58,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:13:58,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:13:58,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:13:58,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:13:58,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:13:58,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:13:58,860 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:13:58,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:13:58,861 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:13:58,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:13:58,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:13:58,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:13:58,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:13:58,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:13:58,861 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:13:58,862 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:13:58,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:13:58,862 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:13:58,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:13:58,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:13:58,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:13:58,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:13:58,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:13:58,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:13:58,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:13:58,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:13:58,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:13:58,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:13:58,864 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:13:58,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:13:58,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:13:58,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc8dc9bdb034e5a733c81076f9e42c36caa1eb5cb68a77287d3420bd964c5f5a [2022-07-13 21:13:59,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:13:59,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:13:59,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:13:59,044 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:13:59,045 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:13:59,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c [2022-07-13 21:13:59,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77bafc111/6bfa3a3128f04eb5ba1a5b7b053cb02f/FLAG0cd80c764 [2022-07-13 21:13:59,497 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:13:59,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c [2022-07-13 21:13:59,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77bafc111/6bfa3a3128f04eb5ba1a5b7b053cb02f/FLAG0cd80c764 [2022-07-13 21:13:59,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77bafc111/6bfa3a3128f04eb5ba1a5b7b053cb02f [2022-07-13 21:13:59,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:13:59,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:13:59,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:13:59,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:13:59,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:13:59,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:13:59" (1/1) ... [2022-07-13 21:13:59,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7156ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59, skipping insertion in model container [2022-07-13 21:13:59,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:13:59" (1/1) ... [2022-07-13 21:13:59,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:13:59,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:13:59,711 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[914,927] [2022-07-13 21:13:59,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[7115,7128] [2022-07-13 21:13:59,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:13:59,818 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:13:59,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[914,927] [2022-07-13 21:13:59,835 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[7115,7128] [2022-07-13 21:13:59,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:13:59,900 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:13:59,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59 WrapperNode [2022-07-13 21:13:59,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:13:59,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:13:59,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:13:59,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:13:59,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59" (1/1) ... [2022-07-13 21:13:59,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59" (1/1) ... [2022-07-13 21:13:59,961 INFO L137 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1101 [2022-07-13 21:13:59,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:13:59,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:13:59,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:13:59,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:13:59,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59" (1/1) ... [2022-07-13 21:13:59,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59" (1/1) ... [2022-07-13 21:13:59,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59" (1/1) ... [2022-07-13 21:13:59,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59" (1/1) ... [2022-07-13 21:13:59,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59" (1/1) ... [2022-07-13 21:14:00,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59" (1/1) ... [2022-07-13 21:14:00,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59" (1/1) ... [2022-07-13 21:14:00,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:14:00,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:14:00,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:14:00,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:14:00,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59" (1/1) ... [2022-07-13 21:14:00,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:14:00,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:14:00,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:14:00,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:14:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:14:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:14:00,104 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:14:00,104 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-13 21:14:00,106 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-13 21:14:00,106 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:14:00,106 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:14:00,106 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:14:00,106 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:14:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-13 21:14:00,107 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-13 21:14:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:14:00,107 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:14:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:14:00,107 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:14:00,107 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-13 21:14:00,107 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-13 21:14:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-13 21:14:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-13 21:14:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-13 21:14:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-13 21:14:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:14:00,108 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:14:00,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:14:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:14:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:14:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-13 21:14:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-13 21:14:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:14:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:14:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:14:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:14:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-13 21:14:00,110 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-13 21:14:00,242 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:14:00,243 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:14:00,827 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:14:00,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:14:00,837 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-07-13 21:14:00,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:14:00 BoogieIcfgContainer [2022-07-13 21:14:00,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:14:00,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:14:00,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:14:00,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:14:00,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:13:59" (1/3) ... [2022-07-13 21:14:00,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17197f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:14:00, skipping insertion in model container [2022-07-13 21:14:00,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:59" (2/3) ... [2022-07-13 21:14:00,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17197f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:14:00, skipping insertion in model container [2022-07-13 21:14:00,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:14:00" (3/3) ... [2022-07-13 21:14:00,845 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.15.cil.c [2022-07-13 21:14:00,854 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:14:00,854 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:14:00,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:14:00,898 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@7a71bc5a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@56e151cf [2022-07-13 21:14:00,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:14:00,903 INFO L276 IsEmpty]: Start isEmpty. Operand has 514 states, 453 states have (on average 1.6467991169977925) internal successors, (746), 461 states have internal predecessors, (746), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-13 21:14:00,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:14:00,911 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:00,912 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] [2022-07-13 21:14:00,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:00,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:00,916 INFO L85 PathProgramCache]: Analyzing trace with hash -338141029, now seen corresponding path program 1 times [2022-07-13 21:14:00,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:00,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414870575] [2022-07-13 21:14:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:00,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:01,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:01,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:01,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:01,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:01,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:01,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:01,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:01,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:01,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:01,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414870575] [2022-07-13 21:14:01,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414870575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:01,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:01,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:14:01,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411891844] [2022-07-13 21:14:01,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:01,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:14:01,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:01,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:14:01,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:14:01,202 INFO L87 Difference]: Start difference. First operand has 514 states, 453 states have (on average 1.6467991169977925) internal successors, (746), 461 states have internal predecessors, (746), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:14:02,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:02,108 INFO L93 Difference]: Finished difference Result 1133 states and 1820 transitions. [2022-07-13 21:14:02,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:14:02,110 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-13 21:14:02,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:02,120 INFO L225 Difference]: With dead ends: 1133 [2022-07-13 21:14:02,120 INFO L226 Difference]: Without dead ends: 638 [2022-07-13 21:14:02,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:14:02,126 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 1267 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:02,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1272 Valid, 2307 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:14:02,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-07-13 21:14:02,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 599. [2022-07-13 21:14:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 521 states have (on average 1.5335892514395393) internal successors, (799), 528 states have internal predecessors, (799), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-07-13 21:14:02,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 908 transitions. [2022-07-13 21:14:02,218 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 908 transitions. Word has length 65 [2022-07-13 21:14:02,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:02,218 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 908 transitions. [2022-07-13 21:14:02,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:14:02,219 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 908 transitions. [2022-07-13 21:14:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:14:02,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:02,222 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] [2022-07-13 21:14:02,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:14:02,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:02,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:02,223 INFO L85 PathProgramCache]: Analyzing trace with hash -74903688, now seen corresponding path program 1 times [2022-07-13 21:14:02,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:02,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80135265] [2022-07-13 21:14:02,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:02,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:02,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:02,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80135265] [2022-07-13 21:14:02,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80135265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:02,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:02,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:14:02,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483922272] [2022-07-13 21:14:02,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:02,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:14:02,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:02,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:14:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:14:02,380 INFO L87 Difference]: Start difference. First operand 599 states and 908 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:14:03,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:03,325 INFO L93 Difference]: Finished difference Result 813 states and 1202 transitions. [2022-07-13 21:14:03,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:14:03,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-13 21:14:03,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:03,329 INFO L225 Difference]: With dead ends: 813 [2022-07-13 21:14:03,329 INFO L226 Difference]: Without dead ends: 636 [2022-07-13 21:14:03,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:14:03,330 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 1031 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 1718 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 1869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:03,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 3032 Invalid, 1869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1718 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:14:03,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-07-13 21:14:03,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 604. [2022-07-13 21:14:03,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 525 states have (on average 1.5276190476190477) internal successors, (802), 532 states have internal predecessors, (802), 54 states have call successors, (54), 22 states have call predecessors, (54), 23 states have return successors, (56), 52 states have call predecessors, (56), 50 states have call successors, (56) [2022-07-13 21:14:03,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 912 transitions. [2022-07-13 21:14:03,356 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 912 transitions. Word has length 65 [2022-07-13 21:14:03,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:03,356 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 912 transitions. [2022-07-13 21:14:03,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:14:03,357 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 912 transitions. [2022-07-13 21:14:03,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:14:03,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:03,359 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] [2022-07-13 21:14:03,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:14:03,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:03,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:03,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1104262986, now seen corresponding path program 1 times [2022-07-13 21:14:03,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:03,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711867632] [2022-07-13 21:14:03,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:03,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:03,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:03,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:03,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:03,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711867632] [2022-07-13 21:14:03,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711867632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:03,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:03,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:14:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481275622] [2022-07-13 21:14:03,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:03,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:14:03,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:03,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:14:03,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:14:03,438 INFO L87 Difference]: Start difference. First operand 604 states and 912 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 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) [2022-07-13 21:14:04,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:04,890 INFO L93 Difference]: Finished difference Result 1504 states and 2131 transitions. [2022-07-13 21:14:04,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:14:04,891 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), 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 65 [2022-07-13 21:14:04,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:04,896 INFO L225 Difference]: With dead ends: 1504 [2022-07-13 21:14:04,896 INFO L226 Difference]: Without dead ends: 1310 [2022-07-13 21:14:04,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-13 21:14:04,898 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 3811 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3827 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:04,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3827 Valid, 3163 Invalid, 2339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:14:04,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-07-13 21:14:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1185. [2022-07-13 21:14:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 987 states have (on average 1.4346504559270516) internal successors, (1416), 1002 states have internal predecessors, (1416), 111 states have call successors, (111), 75 states have call predecessors, (111), 85 states have return successors, (125), 109 states have call predecessors, (125), 107 states have call successors, (125) [2022-07-13 21:14:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1652 transitions. [2022-07-13 21:14:04,937 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1652 transitions. Word has length 65 [2022-07-13 21:14:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:04,937 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1652 transitions. [2022-07-13 21:14:04,937 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), 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) [2022-07-13 21:14:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1652 transitions. [2022-07-13 21:14:04,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:14:04,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:04,939 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] [2022-07-13 21:14:04,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:14:04,939 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:04,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:04,940 INFO L85 PathProgramCache]: Analyzing trace with hash -52813897, now seen corresponding path program 1 times [2022-07-13 21:14:04,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:04,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482784238] [2022-07-13 21:14:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:04,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:04,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:04,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:05,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:05,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:05,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:05,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482784238] [2022-07-13 21:14:05,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482784238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:05,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:05,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:14:05,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090166453] [2022-07-13 21:14:05,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:05,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:14:05,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:14:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:14:05,048 INFO L87 Difference]: Start difference. First operand 1185 states and 1652 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:14:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:05,954 INFO L93 Difference]: Finished difference Result 2066 states and 2795 transitions. [2022-07-13 21:14:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:14:05,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-13 21:14:05,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:05,960 INFO L225 Difference]: With dead ends: 2066 [2022-07-13 21:14:05,960 INFO L226 Difference]: Without dead ends: 1297 [2022-07-13 21:14:05,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:14:05,962 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 1032 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 1705 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:05,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1034 Valid, 3029 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1705 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:14:05,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-07-13 21:14:05,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1205. [2022-07-13 21:14:05,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1003 states have (on average 1.4227318045862414) internal successors, (1427), 1018 states have internal predecessors, (1427), 111 states have call successors, (111), 75 states have call predecessors, (111), 89 states have return successors, (129), 113 states have call predecessors, (129), 107 states have call successors, (129) [2022-07-13 21:14:06,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1667 transitions. [2022-07-13 21:14:06,002 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1667 transitions. Word has length 65 [2022-07-13 21:14:06,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:06,003 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1667 transitions. [2022-07-13 21:14:06,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:14:06,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1667 transitions. [2022-07-13 21:14:06,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:14:06,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:06,004 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] [2022-07-13 21:14:06,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:14:06,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:06,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1333389497, now seen corresponding path program 1 times [2022-07-13 21:14:06,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:06,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255293418] [2022-07-13 21:14:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:06,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:06,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:06,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:06,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:06,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:06,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:06,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:06,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:06,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:06,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255293418] [2022-07-13 21:14:06,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255293418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:06,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:06,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:14:06,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809721126] [2022-07-13 21:14:06,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:06,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:14:06,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:06,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:14:06,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:14:06,075 INFO L87 Difference]: Start difference. First operand 1205 states and 1667 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:14:07,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:07,000 INFO L93 Difference]: Finished difference Result 2773 states and 3614 transitions. [2022-07-13 21:14:07,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:14:07,001 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 [2022-07-13 21:14:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:07,008 INFO L225 Difference]: With dead ends: 2773 [2022-07-13 21:14:07,009 INFO L226 Difference]: Without dead ends: 1985 [2022-07-13 21:14:07,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-13 21:14:07,012 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 1527 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 2611 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:07,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1557 Valid, 2611 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:14:07,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-07-13 21:14:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1653. [2022-07-13 21:14:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1356 states have (on average 1.3834808259587021) internal successors, (1876), 1380 states have internal predecessors, (1876), 157 states have call successors, (157), 114 states have call predecessors, (157), 138 states have return successors, (201), 161 states have call predecessors, (201), 153 states have call successors, (201) [2022-07-13 21:14:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2234 transitions. [2022-07-13 21:14:07,072 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2234 transitions. Word has length 65 [2022-07-13 21:14:07,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:07,072 INFO L495 AbstractCegarLoop]: Abstraction has 1653 states and 2234 transitions. [2022-07-13 21:14:07,073 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) [2022-07-13 21:14:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2234 transitions. [2022-07-13 21:14:07,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:14:07,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:07,074 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] [2022-07-13 21:14:07,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:14:07,074 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1199375991, now seen corresponding path program 1 times [2022-07-13 21:14:07,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:07,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538739264] [2022-07-13 21:14:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:07,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:07,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538739264] [2022-07-13 21:14:07,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538739264] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:07,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:07,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:07,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041706873] [2022-07-13 21:14:07,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:07,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:07,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:07,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:07,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:07,141 INFO L87 Difference]: Start difference. First operand 1653 states and 2234 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:14:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:07,539 INFO L93 Difference]: Finished difference Result 4131 states and 5388 transitions. [2022-07-13 21:14:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:14:07,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-13 21:14:07,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:07,549 INFO L225 Difference]: With dead ends: 4131 [2022-07-13 21:14:07,550 INFO L226 Difference]: Without dead ends: 2897 [2022-07-13 21:14:07,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:14:07,555 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 2246 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:07,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2280 Valid, 1493 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:14:07,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2022-07-13 21:14:07,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2789. [2022-07-13 21:14:07,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2227 states have (on average 1.3161203412662774) internal successors, (2931), 2273 states have internal predecessors, (2931), 286 states have call successors, (286), 220 states have call predecessors, (286), 274 states have return successors, (415), 300 states have call predecessors, (415), 282 states have call successors, (415) [2022-07-13 21:14:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3632 transitions. [2022-07-13 21:14:07,637 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3632 transitions. Word has length 65 [2022-07-13 21:14:07,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:07,637 INFO L495 AbstractCegarLoop]: Abstraction has 2789 states and 3632 transitions. [2022-07-13 21:14:07,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-13 21:14:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3632 transitions. [2022-07-13 21:14:07,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:14:07,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:07,638 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] [2022-07-13 21:14:07,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:14:07,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:07,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:07,640 INFO L85 PathProgramCache]: Analyzing trace with hash -791607456, now seen corresponding path program 1 times [2022-07-13 21:14:07,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:07,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597721081] [2022-07-13 21:14:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:07,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:07,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:07,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:07,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:07,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597721081] [2022-07-13 21:14:07,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597721081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:07,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:07,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:14:07,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275707788] [2022-07-13 21:14:07,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:07,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:14:07,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:07,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:14:07,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:14:07,698 INFO L87 Difference]: Start difference. First operand 2789 states and 3632 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:14:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:08,284 INFO L93 Difference]: Finished difference Result 6241 states and 7964 transitions. [2022-07-13 21:14:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:14:08,284 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-13 21:14:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:08,300 INFO L225 Difference]: With dead ends: 6241 [2022-07-13 21:14:08,300 INFO L226 Difference]: Without dead ends: 3878 [2022-07-13 21:14:08,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:08,308 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 868 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:08,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 2182 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:14:08,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-07-13 21:14:08,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3622. [2022-07-13 21:14:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 2872 states have (on average 1.2959610027855153) internal successors, (3722), 2925 states have internal predecessors, (3722), 378 states have call successors, (378), 300 states have call predecessors, (378), 370 states have return successors, (533), 401 states have call predecessors, (533), 374 states have call successors, (533) [2022-07-13 21:14:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 4633 transitions. [2022-07-13 21:14:08,444 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 4633 transitions. Word has length 66 [2022-07-13 21:14:08,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:08,444 INFO L495 AbstractCegarLoop]: Abstraction has 3622 states and 4633 transitions. [2022-07-13 21:14:08,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:14:08,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 4633 transitions. [2022-07-13 21:14:08,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 21:14:08,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:08,447 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] [2022-07-13 21:14:08,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:14:08,447 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:08,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:08,447 INFO L85 PathProgramCache]: Analyzing trace with hash -993648705, now seen corresponding path program 1 times [2022-07-13 21:14:08,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:08,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029584792] [2022-07-13 21:14:08,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:08,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:08,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:08,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:08,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:08,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:08,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:08,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029584792] [2022-07-13 21:14:08,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029584792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:08,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:08,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:14:08,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829248490] [2022-07-13 21:14:08,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:08,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:14:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:08,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:14:08,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:14:08,530 INFO L87 Difference]: Start difference. First operand 3622 states and 4633 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:14:08,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:08,863 INFO L93 Difference]: Finished difference Result 7633 states and 9607 transitions. [2022-07-13 21:14:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:14:08,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-13 21:14:08,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:08,877 INFO L225 Difference]: With dead ends: 7633 [2022-07-13 21:14:08,878 INFO L226 Difference]: Without dead ends: 4433 [2022-07-13 21:14:08,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:08,884 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 1463 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:08,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1498 Valid, 1907 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:14:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2022-07-13 21:14:09,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4185. [2022-07-13 21:14:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4185 states, 3319 states have (on average 1.2862307924073517) internal successors, (4269), 3378 states have internal predecessors, (4269), 434 states have call successors, (434), 350 states have call predecessors, (434), 430 states have return successors, (610), 461 states have call predecessors, (610), 430 states have call successors, (610) [2022-07-13 21:14:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 5313 transitions. [2022-07-13 21:14:09,021 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 5313 transitions. Word has length 72 [2022-07-13 21:14:09,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:09,021 INFO L495 AbstractCegarLoop]: Abstraction has 4185 states and 5313 transitions. [2022-07-13 21:14:09,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-13 21:14:09,021 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 5313 transitions. [2022-07-13 21:14:09,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 21:14:09,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:09,023 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:09,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:14:09,023 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:09,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:09,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1255358187, now seen corresponding path program 1 times [2022-07-13 21:14:09,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:09,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118206018] [2022-07-13 21:14:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:09,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:09,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:09,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118206018] [2022-07-13 21:14:09,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118206018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:09,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:09,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:09,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560047732] [2022-07-13 21:14:09,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:09,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:09,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:09,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:09,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:09,088 INFO L87 Difference]: Start difference. First operand 4185 states and 5313 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:14:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:09,523 INFO L93 Difference]: Finished difference Result 5254 states and 6597 transitions. [2022-07-13 21:14:09,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:14:09,524 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-13 21:14:09,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:09,541 INFO L225 Difference]: With dead ends: 5254 [2022-07-13 21:14:09,541 INFO L226 Difference]: Without dead ends: 5251 [2022-07-13 21:14:09,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:14:09,545 INFO L413 NwaCegarLoop]: 778 mSDtfsCounter, 2570 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2580 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:09,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2580 Valid, 1525 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:14:09,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2022-07-13 21:14:09,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 4942. [2022-07-13 21:14:09,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 3897 states have (on average 1.2740569668976136) internal successors, (4965), 3963 states have internal predecessors, (4965), 517 states have call successors, (517), 422 states have call predecessors, (517), 526 states have return successors, (738), 561 states have call predecessors, (738), 514 states have call successors, (738) [2022-07-13 21:14:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 6220 transitions. [2022-07-13 21:14:09,726 INFO L78 Accepts]: Start accepts. Automaton has 4942 states and 6220 transitions. Word has length 73 [2022-07-13 21:14:09,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:09,727 INFO L495 AbstractCegarLoop]: Abstraction has 4942 states and 6220 transitions. [2022-07-13 21:14:09,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:14:09,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4942 states and 6220 transitions. [2022-07-13 21:14:09,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 21:14:09,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:09,729 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:09,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:14:09,729 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:09,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:09,730 INFO L85 PathProgramCache]: Analyzing trace with hash -262921527, now seen corresponding path program 1 times [2022-07-13 21:14:09,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:09,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362252051] [2022-07-13 21:14:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:09,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:09,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:09,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362252051] [2022-07-13 21:14:09,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362252051] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:14:09,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445556952] [2022-07-13 21:14:09,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:09,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:14:09,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:14:09,809 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) [2022-07-13 21:14:09,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 21:14:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:09,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 21:14:09,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:14:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:10,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:14:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:10,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445556952] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 21:14:10,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 21:14:10,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-13 21:14:10,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169008353] [2022-07-13 21:14:10,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 21:14:10,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:14:10,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:10,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:14:10,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:14:10,293 INFO L87 Difference]: Start difference. First operand 4942 states and 6220 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 21:14:11,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:11,950 INFO L93 Difference]: Finished difference Result 9456 states and 11705 transitions. [2022-07-13 21:14:11,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 21:14:11,951 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-13 21:14:11,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:11,975 INFO L225 Difference]: With dead ends: 9456 [2022-07-13 21:14:11,976 INFO L226 Difference]: Without dead ends: 9453 [2022-07-13 21:14:11,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-07-13 21:14:11,978 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 1975 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:11,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 3435 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:14:11,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9453 states. [2022-07-13 21:14:12,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9453 to 8567. [2022-07-13 21:14:12,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8567 states, 6732 states have (on average 1.2565359477124183) internal successors, (8459), 6849 states have internal predecessors, (8459), 895 states have call successors, (895), 754 states have call predecessors, (895), 938 states have return successors, (1295), 968 states have call predecessors, (1295), 892 states have call successors, (1295) [2022-07-13 21:14:12,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8567 states to 8567 states and 10649 transitions. [2022-07-13 21:14:12,264 INFO L78 Accepts]: Start accepts. Automaton has 8567 states and 10649 transitions. Word has length 74 [2022-07-13 21:14:12,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:12,265 INFO L495 AbstractCegarLoop]: Abstraction has 8567 states and 10649 transitions. [2022-07-13 21:14:12,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-13 21:14:12,265 INFO L276 IsEmpty]: Start isEmpty. Operand 8567 states and 10649 transitions. [2022-07-13 21:14:12,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 21:14:12,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:12,266 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:12,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 21:14:12,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-13 21:14:12,484 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:12,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:12,485 INFO L85 PathProgramCache]: Analyzing trace with hash -385890155, now seen corresponding path program 2 times [2022-07-13 21:14:12,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:12,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282769494] [2022-07-13 21:14:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:12,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:12,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:12,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282769494] [2022-07-13 21:14:12,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282769494] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:12,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:12,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:14:12,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801623966] [2022-07-13 21:14:12,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:12,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:14:12,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:12,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:14:12,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:14:12,526 INFO L87 Difference]: Start difference. First operand 8567 states and 10649 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:14:13,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:13,020 INFO L93 Difference]: Finished difference Result 11597 states and 14396 transitions. [2022-07-13 21:14:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:14:13,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-13 21:14:13,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:13,043 INFO L225 Difference]: With dead ends: 11597 [2022-07-13 21:14:13,043 INFO L226 Difference]: Without dead ends: 4799 [2022-07-13 21:14:13,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:14:13,052 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 1396 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:13,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1433 Valid, 1968 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:14:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-07-13 21:14:13,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 3730. [2022-07-13 21:14:13,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 2963 states have (on average 1.2666216672291597) internal successors, (3753), 3002 states have internal predecessors, (3753), 394 states have call successors, (394), 318 states have call predecessors, (394), 371 states have return successors, (519), 414 states have call predecessors, (519), 391 states have call successors, (519) [2022-07-13 21:14:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 4666 transitions. [2022-07-13 21:14:13,183 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 4666 transitions. Word has length 77 [2022-07-13 21:14:13,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:13,183 INFO L495 AbstractCegarLoop]: Abstraction has 3730 states and 4666 transitions. [2022-07-13 21:14:13,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-13 21:14:13,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 4666 transitions. [2022-07-13 21:14:13,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 21:14:13,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:13,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:13,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:14:13,186 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:13,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:13,186 INFO L85 PathProgramCache]: Analyzing trace with hash -870186629, now seen corresponding path program 1 times [2022-07-13 21:14:13,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:13,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944223809] [2022-07-13 21:14:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:13,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:13,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:13,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:13,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:13,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:13,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:13,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:13,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:14:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:13,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 21:14:13,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:13,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944223809] [2022-07-13 21:14:13,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944223809] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:13,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:13,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:14:13,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387116111] [2022-07-13 21:14:13,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:13,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:14:13,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:13,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:14:13,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:14:13,246 INFO L87 Difference]: Start difference. First operand 3730 states and 4666 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:14:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:14,316 INFO L93 Difference]: Finished difference Result 10338 states and 12689 transitions. [2022-07-13 21:14:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 21:14:14,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-13 21:14:14,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:14,330 INFO L225 Difference]: With dead ends: 10338 [2022-07-13 21:14:14,331 INFO L226 Difference]: Without dead ends: 5962 [2022-07-13 21:14:14,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-13 21:14:14,339 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 1957 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 1452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:14,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1969 Valid, 2332 Invalid, 1452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:14:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5962 states. [2022-07-13 21:14:14,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5962 to 5698. [2022-07-13 21:14:14,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 4458 states have (on average 1.2292507851054284) internal successors, (5480), 4540 states have internal predecessors, (5480), 610 states have call successors, (610), 504 states have call predecessors, (610), 628 states have return successors, (903), 658 states have call predecessors, (903), 607 states have call successors, (903) [2022-07-13 21:14:14,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 6993 transitions. [2022-07-13 21:14:14,562 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 6993 transitions. Word has length 84 [2022-07-13 21:14:14,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:14,562 INFO L495 AbstractCegarLoop]: Abstraction has 5698 states and 6993 transitions. [2022-07-13 21:14:14,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 21:14:14,562 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 6993 transitions. [2022-07-13 21:14:14,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:14:14,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:14,565 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:14,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:14:14,565 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:14,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:14,566 INFO L85 PathProgramCache]: Analyzing trace with hash -780260845, now seen corresponding path program 1 times [2022-07-13 21:14:14,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:14,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999782901] [2022-07-13 21:14:14,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:14,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 21:14:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:14,638 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 21:14:14,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:14,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999782901] [2022-07-13 21:14:14,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999782901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:14,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:14,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:14:14,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671735962] [2022-07-13 21:14:14,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:14,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:14:14,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:14,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:14:14,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:14:14,640 INFO L87 Difference]: Start difference. First operand 5698 states and 6993 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) [2022-07-13 21:14:15,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:15,757 INFO L93 Difference]: Finished difference Result 9345 states and 11351 transitions. [2022-07-13 21:14:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 21:14:15,757 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-13 21:14:15,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:15,767 INFO L225 Difference]: With dead ends: 9345 [2022-07-13 21:14:15,767 INFO L226 Difference]: Without dead ends: 4796 [2022-07-13 21:14:15,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-13 21:14:15,773 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 2031 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:15,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2071 Valid, 3102 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:14:15,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4796 states. [2022-07-13 21:14:15,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4796 to 4365. [2022-07-13 21:14:15,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 3411 states have (on average 1.2189973614775726) internal successors, (4158), 3476 states have internal predecessors, (4158), 467 states have call successors, (467), 379 states have call predecessors, (467), 485 states have return successors, (645), 514 states have call predecessors, (645), 464 states have call successors, (645) [2022-07-13 21:14:15,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 5270 transitions. [2022-07-13 21:14:15,912 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 5270 transitions. Word has length 93 [2022-07-13 21:14:15,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:15,913 INFO L495 AbstractCegarLoop]: Abstraction has 4365 states and 5270 transitions. [2022-07-13 21:14:15,913 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) [2022-07-13 21:14:15,913 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 5270 transitions. [2022-07-13 21:14:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:14:15,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:15,916 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:15,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:14:15,916 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:15,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:15,917 INFO L85 PathProgramCache]: Analyzing trace with hash 464257645, now seen corresponding path program 1 times [2022-07-13 21:14:15,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:15,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108103908] [2022-07-13 21:14:15,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:15,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:14:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 21:14:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 21:14:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 21:14:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:15,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:14:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 21:14:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 21:14:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,004 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 21:14:16,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:16,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108103908] [2022-07-13 21:14:16,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108103908] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:14:16,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190932618] [2022-07-13 21:14:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:16,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:14:16,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:14:16,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:14:16,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 21:14:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 21:14:16,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:14:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 21:14:16,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:14:16,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190932618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:16,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:14:16,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-13 21:14:16,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208499998] [2022-07-13 21:14:16,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:16,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:14:16,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:16,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:14:16,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:14:16,171 INFO L87 Difference]: Start difference. First operand 4365 states and 5270 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:14:16,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:16,306 INFO L93 Difference]: Finished difference Result 6585 states and 7909 transitions. [2022-07-13 21:14:16,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:16,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-13 21:14:16,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:16,312 INFO L225 Difference]: With dead ends: 6585 [2022-07-13 21:14:16,312 INFO L226 Difference]: Without dead ends: 2646 [2022-07-13 21:14:16,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:14:16,318 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 34 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3825 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:16,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3825 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:14:16,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-07-13 21:14:16,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2490. [2022-07-13 21:14:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2036 states have (on average 1.2426326129666012) internal successors, (2530), 2055 states have internal predecessors, (2530), 229 states have call successors, (229), 173 states have call predecessors, (229), 223 states have return successors, (309), 262 states have call predecessors, (309), 226 states have call successors, (309) [2022-07-13 21:14:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3068 transitions. [2022-07-13 21:14:16,402 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3068 transitions. Word has length 145 [2022-07-13 21:14:16,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:16,402 INFO L495 AbstractCegarLoop]: Abstraction has 2490 states and 3068 transitions. [2022-07-13 21:14:16,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 21:14:16,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3068 transitions. [2022-07-13 21:14:16,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 21:14:16,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:16,406 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:14:16,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 21:14:16,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 21:14:16,624 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:16,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:16,624 INFO L85 PathProgramCache]: Analyzing trace with hash -21978279, now seen corresponding path program 1 times [2022-07-13 21:14:16,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:16,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876956936] [2022-07-13 21:14:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:16,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:14:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 21:14:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 21:14:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 21:14:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:16,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 21:14:16,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 21:14:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 21:14:16,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,679 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 21:14:16,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:16,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876956936] [2022-07-13 21:14:16,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876956936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:16,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:16,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:14:16,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666630914] [2022-07-13 21:14:16,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:16,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:14:16,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:16,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:14:16,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:14:16,680 INFO L87 Difference]: Start difference. First operand 2490 states and 3068 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 21:14:17,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:17,180 INFO L93 Difference]: Finished difference Result 2544 states and 3124 transitions. [2022-07-13 21:14:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:17,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-07-13 21:14:17,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:17,184 INFO L225 Difference]: With dead ends: 2544 [2022-07-13 21:14:17,184 INFO L226 Difference]: Without dead ends: 2026 [2022-07-13 21:14:17,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:14:17,185 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 1128 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:17,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1766 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:14:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2022-07-13 21:14:17,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1975. [2022-07-13 21:14:17,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1639 states have (on average 1.2684563758389262) internal successors, (2079), 1654 states have internal predecessors, (2079), 172 states have call successors, (172), 124 states have call predecessors, (172), 162 states have return successors, (231), 197 states have call predecessors, (231), 169 states have call successors, (231) [2022-07-13 21:14:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2482 transitions. [2022-07-13 21:14:17,277 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2482 transitions. Word has length 147 [2022-07-13 21:14:17,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:17,277 INFO L495 AbstractCegarLoop]: Abstraction has 1975 states and 2482 transitions. [2022-07-13 21:14:17,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 21:14:17,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2482 transitions. [2022-07-13 21:14:17,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 21:14:17,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:17,283 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 21:14:17,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:14:17,284 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:17,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:17,284 INFO L85 PathProgramCache]: Analyzing trace with hash 848578871, now seen corresponding path program 1 times [2022-07-13 21:14:17,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:17,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464095173] [2022-07-13 21:14:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:17,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:14:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:14:17,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 21:14:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 21:14:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 21:14:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 21:14:17,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 21:14:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-13 21:14:17,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:17,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464095173] [2022-07-13 21:14:17,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464095173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:17,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:17,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:17,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019414452] [2022-07-13 21:14:17,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:17,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:17,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:17,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:17,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:17,349 INFO L87 Difference]: Start difference. First operand 1975 states and 2482 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 21:14:18,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:18,023 INFO L93 Difference]: Finished difference Result 3258 states and 4002 transitions. [2022-07-13 21:14:18,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:14:18,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-13 21:14:18,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:18,029 INFO L225 Difference]: With dead ends: 3258 [2022-07-13 21:14:18,029 INFO L226 Difference]: Without dead ends: 1868 [2022-07-13 21:14:18,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:18,032 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 721 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:18,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 2636 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 21:14:18,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2022-07-13 21:14:18,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1722. [2022-07-13 21:14:18,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1437 states have (on average 1.2867084203201113) internal successors, (1849), 1452 states have internal predecessors, (1849), 147 states have call successors, (147), 103 states have call predecessors, (147), 136 states have return successors, (193), 167 states have call predecessors, (193), 144 states have call successors, (193) [2022-07-13 21:14:18,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2189 transitions. [2022-07-13 21:14:18,105 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2189 transitions. Word has length 159 [2022-07-13 21:14:18,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:18,105 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2189 transitions. [2022-07-13 21:14:18,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 21:14:18,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2189 transitions. [2022-07-13 21:14:18,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 21:14:18,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:18,107 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:18,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:14:18,108 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:18,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1407928022, now seen corresponding path program 1 times [2022-07-13 21:14:18,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:18,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158025907] [2022-07-13 21:14:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:18,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:14:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:14:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:14:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:14:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:14:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:14:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 21:14:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 21:14:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:14:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:14:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 21:14:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 21:14:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:14:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-13 21:14:18,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:18,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158025907] [2022-07-13 21:14:18,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158025907] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:14:18,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541048918] [2022-07-13 21:14:18,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:18,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:14:18,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:14:18,223 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 21:14:18,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 21:14:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:18,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 21:14:18,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:14:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 21:14:18,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:14:18,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541048918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:18,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:14:18,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-07-13 21:14:18,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972324397] [2022-07-13 21:14:18,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:18,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:14:18,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:18,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:14:18,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:18,439 INFO L87 Difference]: Start difference. First operand 1722 states and 2189 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 21:14:18,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:18,831 INFO L93 Difference]: Finished difference Result 4048 states and 4997 transitions. [2022-07-13 21:14:18,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:14:18,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 162 [2022-07-13 21:14:18,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:18,840 INFO L225 Difference]: With dead ends: 4048 [2022-07-13 21:14:18,840 INFO L226 Difference]: Without dead ends: 2638 [2022-07-13 21:14:18,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:14:18,846 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 398 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:18,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1506 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:14:18,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2022-07-13 21:14:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2596. [2022-07-13 21:14:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2168 states have (on average 1.238929889298893) internal successors, (2686), 2187 states have internal predecessors, (2686), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2022-07-13 21:14:18,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3207 transitions. [2022-07-13 21:14:18,949 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3207 transitions. Word has length 162 [2022-07-13 21:14:18,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:18,950 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3207 transitions. [2022-07-13 21:14:18,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 21:14:18,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3207 transitions. [2022-07-13 21:14:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:18,952 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:18,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:18,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 21:14:19,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:14:19,172 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:19,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:19,172 INFO L85 PathProgramCache]: Analyzing trace with hash -60640515, now seen corresponding path program 1 times [2022-07-13 21:14:19,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:19,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541540313] [2022-07-13 21:14:19,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:19,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:19,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:19,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:19,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:19,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:19,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541540313] [2022-07-13 21:14:19,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541540313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:19,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:19,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:14:19,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546548106] [2022-07-13 21:14:19,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:19,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:14:19,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:19,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:14:19,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:14:19,280 INFO L87 Difference]: Start difference. First operand 2596 states and 3207 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:20,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:20,625 INFO L93 Difference]: Finished difference Result 3150 states and 4107 transitions. [2022-07-13 21:14:20,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:20,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:20,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:20,631 INFO L225 Difference]: With dead ends: 3150 [2022-07-13 21:14:20,631 INFO L226 Difference]: Without dead ends: 2749 [2022-07-13 21:14:20,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:14:20,633 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 1217 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:20,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1428 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:14:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2022-07-13 21:14:20,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2596. [2022-07-13 21:14:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2168 states have (on average 1.238468634686347) internal successors, (2685), 2187 states have internal predecessors, (2685), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2022-07-13 21:14:20,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3206 transitions. [2022-07-13 21:14:20,780 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3206 transitions. Word has length 190 [2022-07-13 21:14:20,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:20,781 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3206 transitions. [2022-07-13 21:14:20,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:20,781 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3206 transitions. [2022-07-13 21:14:20,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:20,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:20,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:20,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:14:20,784 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:20,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:20,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1287493055, now seen corresponding path program 1 times [2022-07-13 21:14:20,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:20,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936125609] [2022-07-13 21:14:20,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:20,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:20,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:20,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:20,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:20,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:20,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:20,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:20,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936125609] [2022-07-13 21:14:20,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936125609] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:20,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:20,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:14:20,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523927665] [2022-07-13 21:14:20,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:20,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:14:20,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:20,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:14:20,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:14:20,875 INFO L87 Difference]: Start difference. First operand 2596 states and 3206 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:22,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:22,311 INFO L93 Difference]: Finished difference Result 3142 states and 4090 transitions. [2022-07-13 21:14:22,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:22,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:22,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:22,317 INFO L225 Difference]: With dead ends: 3142 [2022-07-13 21:14:22,317 INFO L226 Difference]: Without dead ends: 2749 [2022-07-13 21:14:22,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:14:22,318 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1208 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:22,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 1426 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:14:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2022-07-13 21:14:22,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2596. [2022-07-13 21:14:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2168 states have (on average 1.2380073800738007) internal successors, (2684), 2187 states have internal predecessors, (2684), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2022-07-13 21:14:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3205 transitions. [2022-07-13 21:14:22,450 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3205 transitions. Word has length 190 [2022-07-13 21:14:22,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:22,450 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3205 transitions. [2022-07-13 21:14:22,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:22,451 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3205 transitions. [2022-07-13 21:14:22,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:22,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:22,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:22,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:14:22,453 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:22,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:22,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2118146689, now seen corresponding path program 1 times [2022-07-13 21:14:22,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:22,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706461995] [2022-07-13 21:14:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:22,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:22,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:22,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:22,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:22,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:22,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:22,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:22,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:22,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:22,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706461995] [2022-07-13 21:14:22,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706461995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:22,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:22,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:14:22,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141943490] [2022-07-13 21:14:22,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:22,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:14:22,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:22,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:14:22,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:14:22,555 INFO L87 Difference]: Start difference. First operand 2596 states and 3205 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:25,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:25,078 INFO L93 Difference]: Finished difference Result 3694 states and 4988 transitions. [2022-07-13 21:14:25,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:14:25,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:25,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:25,085 INFO L225 Difference]: With dead ends: 3694 [2022-07-13 21:14:25,085 INFO L226 Difference]: Without dead ends: 3308 [2022-07-13 21:14:25,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:25,088 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1894 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 2434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:25,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1924 Valid, 2064 Invalid, 2434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 21:14:25,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2022-07-13 21:14:25,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3001. [2022-07-13 21:14:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2544 states have (on average 1.292059748427673) internal successors, (3287), 2564 states have internal predecessors, (3287), 239 states have call successors, (239), 160 states have call predecessors, (239), 216 states have return successors, (329), 277 states have call predecessors, (329), 236 states have call successors, (329) [2022-07-13 21:14:25,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 3855 transitions. [2022-07-13 21:14:25,252 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 3855 transitions. Word has length 190 [2022-07-13 21:14:25,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:25,252 INFO L495 AbstractCegarLoop]: Abstraction has 3001 states and 3855 transitions. [2022-07-13 21:14:25,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:25,252 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 3855 transitions. [2022-07-13 21:14:25,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:25,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:25,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:25,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:14:25,255 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:25,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:25,255 INFO L85 PathProgramCache]: Analyzing trace with hash 271120253, now seen corresponding path program 1 times [2022-07-13 21:14:25,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:25,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566752184] [2022-07-13 21:14:25,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:25,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:25,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:25,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:25,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:25,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:25,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:25,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566752184] [2022-07-13 21:14:25,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566752184] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:25,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:25,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:25,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108086207] [2022-07-13 21:14:25,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:25,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:25,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:25,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:25,360 INFO L87 Difference]: Start difference. First operand 3001 states and 3855 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:28,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:28,537 INFO L93 Difference]: Finished difference Result 4678 states and 6583 transitions. [2022-07-13 21:14:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:14:28,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:28,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:28,544 INFO L225 Difference]: With dead ends: 4678 [2022-07-13 21:14:28,544 INFO L226 Difference]: Without dead ends: 3887 [2022-07-13 21:14:28,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:14:28,546 INFO L413 NwaCegarLoop]: 1212 mSDtfsCounter, 1925 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3555 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 3464 SdHoareTripleChecker+Invalid, 3670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:28,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1955 Valid, 3464 Invalid, 3670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3555 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:14:28,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2022-07-13 21:14:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3377. [2022-07-13 21:14:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 2891 states have (on average 1.325492909028018) internal successors, (3832), 2912 states have internal predecessors, (3832), 261 states have call successors, (261), 166 states have call predecessors, (261), 223 states have return successors, (353), 300 states have call predecessors, (353), 258 states have call successors, (353) [2022-07-13 21:14:28,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4446 transitions. [2022-07-13 21:14:28,724 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4446 transitions. Word has length 190 [2022-07-13 21:14:28,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:28,724 INFO L495 AbstractCegarLoop]: Abstraction has 3377 states and 4446 transitions. [2022-07-13 21:14:28,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:28,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4446 transitions. [2022-07-13 21:14:28,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:28,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:28,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:28,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:14:28,728 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:28,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1652130177, now seen corresponding path program 1 times [2022-07-13 21:14:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:28,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691499121] [2022-07-13 21:14:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:28,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:28,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:28,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:28,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:28,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:28,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:28,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691499121] [2022-07-13 21:14:28,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691499121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:28,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:28,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:28,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875399016] [2022-07-13 21:14:28,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:28,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:28,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:28,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:28,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:28,848 INFO L87 Difference]: Start difference. First operand 3377 states and 4446 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:32,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:32,110 INFO L93 Difference]: Finished difference Result 6129 states and 8914 transitions. [2022-07-13 21:14:32,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:14:32,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:32,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:32,124 INFO L225 Difference]: With dead ends: 6129 [2022-07-13 21:14:32,124 INFO L226 Difference]: Without dead ends: 4962 [2022-07-13 21:14:32,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:14:32,130 INFO L413 NwaCegarLoop]: 1204 mSDtfsCounter, 1922 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3557 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1952 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 3675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 3557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:32,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1952 Valid, 3456 Invalid, 3675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 3557 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:14:32,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2022-07-13 21:14:32,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4130. [2022-07-13 21:14:32,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3586 states have (on average 1.3728388176240938) internal successors, (4923), 3609 states have internal predecessors, (4923), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-07-13 21:14:32,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5633 transitions. [2022-07-13 21:14:32,381 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5633 transitions. Word has length 190 [2022-07-13 21:14:32,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:32,381 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5633 transitions. [2022-07-13 21:14:32,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5633 transitions. [2022-07-13 21:14:32,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:32,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:32,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:32,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:14:32,384 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:32,384 INFO L85 PathProgramCache]: Analyzing trace with hash 918228797, now seen corresponding path program 1 times [2022-07-13 21:14:32,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:32,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346254989] [2022-07-13 21:14:32,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:32,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:32,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:32,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:32,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:32,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:32,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:32,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346254989] [2022-07-13 21:14:32,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346254989] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:32,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:32,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:32,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64113592] [2022-07-13 21:14:32,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:32,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:32,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:32,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:32,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:32,496 INFO L87 Difference]: Start difference. First operand 4130 states and 5633 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:34,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:34,303 INFO L93 Difference]: Finished difference Result 6870 states and 10092 transitions. [2022-07-13 21:14:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:34,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:34,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:34,320 INFO L225 Difference]: With dead ends: 6870 [2022-07-13 21:14:34,320 INFO L226 Difference]: Without dead ends: 4950 [2022-07-13 21:14:34,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:34,326 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1523 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:34,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 1986 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:14:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4950 states. [2022-07-13 21:14:34,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4950 to 4130. [2022-07-13 21:14:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3586 states have (on average 1.3714445064138316) internal successors, (4918), 3609 states have internal predecessors, (4918), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-07-13 21:14:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5628 transitions. [2022-07-13 21:14:34,574 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5628 transitions. Word has length 190 [2022-07-13 21:14:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:34,575 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5628 transitions. [2022-07-13 21:14:34,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5628 transitions. [2022-07-13 21:14:34,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:34,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:34,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:34,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 21:14:34,578 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:34,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:34,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1416785599, now seen corresponding path program 1 times [2022-07-13 21:14:34,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:34,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702262808] [2022-07-13 21:14:34,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:34,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:34,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:34,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:34,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:34,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:34,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:34,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:34,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702262808] [2022-07-13 21:14:34,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702262808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:34,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:34,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:34,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950916915] [2022-07-13 21:14:34,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:34,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:34,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:34,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:34,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:34,672 INFO L87 Difference]: Start difference. First operand 4130 states and 5628 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:36,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:36,366 INFO L93 Difference]: Finished difference Result 6864 states and 10066 transitions. [2022-07-13 21:14:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:36,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:36,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:36,377 INFO L225 Difference]: With dead ends: 6864 [2022-07-13 21:14:36,377 INFO L226 Difference]: Without dead ends: 4944 [2022-07-13 21:14:36,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:36,381 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 1656 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 1698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:36,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 1767 Invalid, 1698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:14:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2022-07-13 21:14:36,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 4130. [2022-07-13 21:14:36,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3586 states have (on average 1.3700501952035695) internal successors, (4913), 3609 states have internal predecessors, (4913), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-07-13 21:14:36,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5623 transitions. [2022-07-13 21:14:36,657 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5623 transitions. Word has length 190 [2022-07-13 21:14:36,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:36,658 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5623 transitions. [2022-07-13 21:14:36,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:36,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5623 transitions. [2022-07-13 21:14:36,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:36,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:36,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:36,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 21:14:36,660 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:36,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1987057405, now seen corresponding path program 1 times [2022-07-13 21:14:36,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:36,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703519462] [2022-07-13 21:14:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:36,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:36,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:36,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:36,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:36,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:36,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:36,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703519462] [2022-07-13 21:14:36,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703519462] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:36,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:36,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:36,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847010904] [2022-07-13 21:14:36,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:36,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:36,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:36,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:36,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:36,761 INFO L87 Difference]: Start difference. First operand 4130 states and 5623 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:38,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:38,355 INFO L93 Difference]: Finished difference Result 6852 states and 10028 transitions. [2022-07-13 21:14:38,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:38,355 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:38,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:38,364 INFO L225 Difference]: With dead ends: 6852 [2022-07-13 21:14:38,364 INFO L226 Difference]: Without dead ends: 4932 [2022-07-13 21:14:38,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:38,369 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 1652 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:38,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1683 Valid, 1761 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:14:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2022-07-13 21:14:38,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 4130. [2022-07-13 21:14:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3586 states have (on average 1.3686558839933074) internal successors, (4908), 3609 states have internal predecessors, (4908), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-07-13 21:14:38,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5618 transitions. [2022-07-13 21:14:38,652 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5618 transitions. Word has length 190 [2022-07-13 21:14:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:38,653 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5618 transitions. [2022-07-13 21:14:38,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:38,653 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5618 transitions. [2022-07-13 21:14:38,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:38,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:38,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:38,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 21:14:38,655 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:38,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:38,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1201059515, now seen corresponding path program 1 times [2022-07-13 21:14:38,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:38,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361584999] [2022-07-13 21:14:38,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:38,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:38,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:38,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:38,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:38,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:38,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:38,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361584999] [2022-07-13 21:14:38,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361584999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:38,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:38,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:38,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296319157] [2022-07-13 21:14:38,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:38,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:38,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:38,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:38,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:38,766 INFO L87 Difference]: Start difference. First operand 4130 states and 5618 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:42,166 INFO L93 Difference]: Finished difference Result 8893 states and 13249 transitions. [2022-07-13 21:14:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:14:42,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:42,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:42,183 INFO L225 Difference]: With dead ends: 8893 [2022-07-13 21:14:42,183 INFO L226 Difference]: Without dead ends: 6973 [2022-07-13 21:14:42,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:14:42,190 INFO L413 NwaCegarLoop]: 1176 mSDtfsCounter, 1897 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3479 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 3428 SdHoareTripleChecker+Invalid, 3601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:42,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1927 Valid, 3428 Invalid, 3601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3479 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:14:42,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2022-07-13 21:14:42,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 5655. [2022-07-13 21:14:42,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5655 states, 4995 states have (on average 1.4222222222222223) internal successors, (7104), 5022 states have internal predecessors, (7104), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2022-07-13 21:14:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5655 states to 5655 states and 8012 transitions. [2022-07-13 21:14:42,626 INFO L78 Accepts]: Start accepts. Automaton has 5655 states and 8012 transitions. Word has length 190 [2022-07-13 21:14:42,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:42,626 INFO L495 AbstractCegarLoop]: Abstraction has 5655 states and 8012 transitions. [2022-07-13 21:14:42,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:42,626 INFO L276 IsEmpty]: Start isEmpty. Operand 5655 states and 8012 transitions. [2022-07-13 21:14:42,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:42,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:42,629 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:42,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 21:14:42,629 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:42,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:42,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1868441405, now seen corresponding path program 1 times [2022-07-13 21:14:42,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:42,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670693641] [2022-07-13 21:14:42,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:42,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:42,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:42,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:42,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670693641] [2022-07-13 21:14:42,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670693641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:42,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:42,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:42,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342835862] [2022-07-13 21:14:42,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:42,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:42,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:42,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:42,736 INFO L87 Difference]: Start difference. First operand 5655 states and 8012 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:44,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:44,598 INFO L93 Difference]: Finished difference Result 10442 states and 15719 transitions. [2022-07-13 21:14:44,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:44,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:44,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:44,614 INFO L225 Difference]: With dead ends: 10442 [2022-07-13 21:14:44,614 INFO L226 Difference]: Without dead ends: 6997 [2022-07-13 21:14:44,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:44,621 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 1651 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1500 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:44,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1682 Valid, 1754 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1500 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:14:44,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2022-07-13 21:14:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 5655. [2022-07-13 21:14:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5655 states, 4995 states have (on average 1.4204204204204205) internal successors, (7095), 5022 states have internal predecessors, (7095), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2022-07-13 21:14:45,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5655 states to 5655 states and 8003 transitions. [2022-07-13 21:14:45,112 INFO L78 Accepts]: Start accepts. Automaton has 5655 states and 8003 transitions. Word has length 190 [2022-07-13 21:14:45,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:45,113 INFO L495 AbstractCegarLoop]: Abstraction has 5655 states and 8003 transitions. [2022-07-13 21:14:45,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:45,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5655 states and 8003 transitions. [2022-07-13 21:14:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:45,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:45,119 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:45,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 21:14:45,119 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:45,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:45,120 INFO L85 PathProgramCache]: Analyzing trace with hash -326787461, now seen corresponding path program 1 times [2022-07-13 21:14:45,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:45,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814534224] [2022-07-13 21:14:45,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:45,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:45,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:45,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:45,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:45,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:45,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:45,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:45,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:45,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814534224] [2022-07-13 21:14:45,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814534224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:45,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:45,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:45,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899451201] [2022-07-13 21:14:45,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:45,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:45,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:45,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:45,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:45,231 INFO L87 Difference]: Start difference. First operand 5655 states and 8003 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:49,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:49,121 INFO L93 Difference]: Finished difference Result 14462 states and 22041 transitions. [2022-07-13 21:14:49,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:14:49,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:49,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:49,139 INFO L225 Difference]: With dead ends: 14462 [2022-07-13 21:14:49,140 INFO L226 Difference]: Without dead ends: 11017 [2022-07-13 21:14:49,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:14:49,145 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 1889 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3452 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 3417 SdHoareTripleChecker+Invalid, 3574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:49,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 3417 Invalid, 3574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3452 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:14:49,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11017 states. [2022-07-13 21:14:49,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11017 to 8713. [2022-07-13 21:14:49,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8713 states, 7821 states have (on average 1.4682265694923924) internal successors, (11483), 7856 states have internal predecessors, (11483), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2022-07-13 21:14:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8713 states to 8713 states and 12805 transitions. [2022-07-13 21:14:49,832 INFO L78 Accepts]: Start accepts. Automaton has 8713 states and 12805 transitions. Word has length 190 [2022-07-13 21:14:49,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:49,832 INFO L495 AbstractCegarLoop]: Abstraction has 8713 states and 12805 transitions. [2022-07-13 21:14:49,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 8713 states and 12805 transitions. [2022-07-13 21:14:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:49,836 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:49,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:49,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 21:14:49,836 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:49,837 INFO L85 PathProgramCache]: Analyzing trace with hash 18040701, now seen corresponding path program 1 times [2022-07-13 21:14:49,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:49,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277706225] [2022-07-13 21:14:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:49,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:49,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:49,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:49,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:49,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:49,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:49,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277706225] [2022-07-13 21:14:49,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277706225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:49,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:49,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:49,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788999190] [2022-07-13 21:14:49,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:49,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:49,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:49,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:49,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:49,948 INFO L87 Difference]: Start difference. First operand 8713 states and 12805 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:52,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:52,338 INFO L93 Difference]: Finished difference Result 17610 states and 27094 transitions. [2022-07-13 21:14:52,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:52,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:52,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:52,361 INFO L225 Difference]: With dead ends: 17610 [2022-07-13 21:14:52,361 INFO L226 Difference]: Without dead ends: 11107 [2022-07-13 21:14:52,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:52,374 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 1650 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 1654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:52,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 1747 Invalid, 1654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:14:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2022-07-13 21:14:53,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 8713. [2022-07-13 21:14:53,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8713 states, 7821 states have (on average 1.4660529344073647) internal successors, (11466), 7856 states have internal predecessors, (11466), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2022-07-13 21:14:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8713 states to 8713 states and 12788 transitions. [2022-07-13 21:14:53,138 INFO L78 Accepts]: Start accepts. Automaton has 8713 states and 12788 transitions. Word has length 190 [2022-07-13 21:14:53,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:53,138 INFO L495 AbstractCegarLoop]: Abstraction has 8713 states and 12788 transitions. [2022-07-13 21:14:53,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:53,139 INFO L276 IsEmpty]: Start isEmpty. Operand 8713 states and 12788 transitions. [2022-07-13 21:14:53,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:53,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:53,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:53,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 21:14:53,142 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:53,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:53,143 INFO L85 PathProgramCache]: Analyzing trace with hash 998995515, now seen corresponding path program 1 times [2022-07-13 21:14:53,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:53,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978314619] [2022-07-13 21:14:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:53,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:53,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:53,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:53,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:53,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:53,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:53,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:53,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978314619] [2022-07-13 21:14:53,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978314619] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:53,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:53,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:53,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937695265] [2022-07-13 21:14:53,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:53,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:53,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:53,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:53,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:53,263 INFO L87 Difference]: Start difference. First operand 8713 states and 12788 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:55,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:55,823 INFO L93 Difference]: Finished difference Result 17592 states and 27007 transitions. [2022-07-13 21:14:55,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:55,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:14:55,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:55,844 INFO L225 Difference]: With dead ends: 17592 [2022-07-13 21:14:55,845 INFO L226 Difference]: Without dead ends: 11089 [2022-07-13 21:14:55,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:14:55,856 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1484 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:55,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1515 Valid, 1972 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:14:55,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11089 states. [2022-07-13 21:14:56,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11089 to 8713. [2022-07-13 21:14:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8713 states, 7821 states have (on average 1.4638792993223373) internal successors, (11449), 7856 states have internal predecessors, (11449), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2022-07-13 21:14:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8713 states to 8713 states and 12771 transitions. [2022-07-13 21:14:56,646 INFO L78 Accepts]: Start accepts. Automaton has 8713 states and 12771 transitions. Word has length 190 [2022-07-13 21:14:56,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:56,646 INFO L495 AbstractCegarLoop]: Abstraction has 8713 states and 12771 transitions. [2022-07-13 21:14:56,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:14:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8713 states and 12771 transitions. [2022-07-13 21:14:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:14:56,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:56,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:14:56,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 21:14:56,650 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:56,651 INFO L85 PathProgramCache]: Analyzing trace with hash -770476099, now seen corresponding path program 1 times [2022-07-13 21:14:56,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:56,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757258650] [2022-07-13 21:14:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:56,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:56,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:56,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:14:56,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:56,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:14:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:56,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:14:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:14:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:14:56,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:56,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757258650] [2022-07-13 21:14:56,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757258650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:56,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:56,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:56,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305903672] [2022-07-13 21:14:56,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:56,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:56,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:56,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:56,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:56,762 INFO L87 Difference]: Start difference. First operand 8713 states and 12771 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:01,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:01,800 INFO L93 Difference]: Finished difference Result 25578 states and 39513 transitions. [2022-07-13 21:15:01,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:15:01,801 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:15:01,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:01,841 INFO L225 Difference]: With dead ends: 25578 [2022-07-13 21:15:01,842 INFO L226 Difference]: Without dead ends: 19075 [2022-07-13 21:15:01,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:15:01,858 INFO L413 NwaCegarLoop]: 1146 mSDtfsCounter, 1877 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3403 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 3398 SdHoareTripleChecker+Invalid, 3528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:01,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1907 Valid, 3398 Invalid, 3528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3403 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:15:01,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19075 states. [2022-07-13 21:15:03,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19075 to 14876. [2022-07-13 21:15:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14876 states, 13520 states have (on average 1.497559171597633) internal successors, (20247), 13571 states have internal predecessors, (20247), 921 states have call successors, (921), 346 states have call predecessors, (921), 433 states have return successors, (1283), 990 states have call predecessors, (1283), 918 states have call successors, (1283) [2022-07-13 21:15:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14876 states to 14876 states and 22451 transitions. [2022-07-13 21:15:03,280 INFO L78 Accepts]: Start accepts. Automaton has 14876 states and 22451 transitions. Word has length 190 [2022-07-13 21:15:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:03,280 INFO L495 AbstractCegarLoop]: Abstraction has 14876 states and 22451 transitions. [2022-07-13 21:15:03,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:03,281 INFO L276 IsEmpty]: Start isEmpty. Operand 14876 states and 22451 transitions. [2022-07-13 21:15:03,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:15:03,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:03,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:03,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 21:15:03,289 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:03,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:03,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1381745157, now seen corresponding path program 1 times [2022-07-13 21:15:03,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:03,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045169541] [2022-07-13 21:15:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:03,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:03,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:15:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:03,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:15:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:03,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:15:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:03,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:15:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:03,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:03,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045169541] [2022-07-13 21:15:03,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045169541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:03,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:03,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:03,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018692464] [2022-07-13 21:15:03,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:03,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:03,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:03,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:03,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:03,416 INFO L87 Difference]: Start difference. First operand 14876 states and 22451 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:06,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:06,912 INFO L93 Difference]: Finished difference Result 31896 states and 49714 transitions. [2022-07-13 21:15:06,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:15:06,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:15:06,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:06,956 INFO L225 Difference]: With dead ends: 31896 [2022-07-13 21:15:06,956 INFO L226 Difference]: Without dead ends: 19230 [2022-07-13 21:15:06,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:15:06,977 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1646 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:06,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 1730 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:15:06,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19230 states. [2022-07-13 21:15:08,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19230 to 14876. [2022-07-13 21:15:08,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14876 states, 13520 states have (on average 1.4951183431952664) internal successors, (20214), 13571 states have internal predecessors, (20214), 921 states have call successors, (921), 346 states have call predecessors, (921), 433 states have return successors, (1283), 990 states have call predecessors, (1283), 918 states have call successors, (1283) [2022-07-13 21:15:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14876 states to 14876 states and 22418 transitions. [2022-07-13 21:15:08,549 INFO L78 Accepts]: Start accepts. Automaton has 14876 states and 22418 transitions. Word has length 190 [2022-07-13 21:15:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:08,550 INFO L495 AbstractCegarLoop]: Abstraction has 14876 states and 22418 transitions. [2022-07-13 21:15:08,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 14876 states and 22418 transitions. [2022-07-13 21:15:08,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:15:08,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:08,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:08,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 21:15:08,556 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:08,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash 512588729, now seen corresponding path program 1 times [2022-07-13 21:15:08,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:08,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302216215] [2022-07-13 21:15:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:08,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:08,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:08,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:15:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:08,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:15:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:08,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:15:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:15:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:08,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:08,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:08,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302216215] [2022-07-13 21:15:08,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302216215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:08,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:08,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:08,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142386776] [2022-07-13 21:15:08,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:08,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:08,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:08,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:08,664 INFO L87 Difference]: Start difference. First operand 14876 states and 22418 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:18,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:18,121 INFO L93 Difference]: Finished difference Result 53543 states and 83505 transitions. [2022-07-13 21:15:18,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:15:18,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:15:18,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:18,211 INFO L225 Difference]: With dead ends: 53543 [2022-07-13 21:15:18,211 INFO L226 Difference]: Without dead ends: 40877 [2022-07-13 21:15:18,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:15:18,240 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 2350 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 3358 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2394 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 3488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:18,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2394 Valid, 3369 Invalid, 3488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3358 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 21:15:18,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40877 states. [2022-07-13 21:15:21,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40877 to 26943. [2022-07-13 21:15:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26943 states, 24691 states have (on average 1.5148839658175044) internal successors, (37404), 24774 states have internal predecessors, (37404), 1593 states have call successors, (1593), 538 states have call predecessors, (1593), 657 states have return successors, (2473), 1694 states have call predecessors, (2473), 1590 states have call successors, (2473) [2022-07-13 21:15:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26943 states to 26943 states and 41470 transitions. [2022-07-13 21:15:21,413 INFO L78 Accepts]: Start accepts. Automaton has 26943 states and 41470 transitions. Word has length 190 [2022-07-13 21:15:21,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:21,413 INFO L495 AbstractCegarLoop]: Abstraction has 26943 states and 41470 transitions. [2022-07-13 21:15:21,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 26943 states and 41470 transitions. [2022-07-13 21:15:21,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:15:21,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:21,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:21,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 21:15:21,422 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:21,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:21,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1959169595, now seen corresponding path program 1 times [2022-07-13 21:15:21,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:21,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680410501] [2022-07-13 21:15:21,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:21,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:15:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:15:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:15:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:15:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:21,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:21,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680410501] [2022-07-13 21:15:21,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680410501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:21,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:21,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:21,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16022485] [2022-07-13 21:15:21,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:21,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:21,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:21,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:21,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:21,552 INFO L87 Difference]: Start difference. First operand 26943 states and 41470 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:38,027 INFO L93 Difference]: Finished difference Result 101992 states and 160555 transitions. [2022-07-13 21:15:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:15:38,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:15:38,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:38,222 INFO L225 Difference]: With dead ends: 101992 [2022-07-13 21:15:38,222 INFO L226 Difference]: Without dead ends: 77259 [2022-07-13 21:15:38,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:15:38,285 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 1977 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 3910 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 4037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:38,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2006 Valid, 3556 Invalid, 4037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3910 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-13 21:15:38,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77259 states. [2022-07-13 21:15:44,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77259 to 51296. [2022-07-13 21:15:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51296 states, 47284 states have (on average 1.528085610354454) internal successors, (72254), 47431 states have internal predecessors, (72254), 2905 states have call successors, (2905), 922 states have call predecessors, (2905), 1105 states have return successors, (5307), 3070 states have call predecessors, (5307), 2902 states have call successors, (5307) [2022-07-13 21:15:44,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51296 states to 51296 states and 80466 transitions. [2022-07-13 21:15:44,726 INFO L78 Accepts]: Start accepts. Automaton has 51296 states and 80466 transitions. Word has length 190 [2022-07-13 21:15:44,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:44,726 INFO L495 AbstractCegarLoop]: Abstraction has 51296 states and 80466 transitions. [2022-07-13 21:15:44,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:44,726 INFO L276 IsEmpty]: Start isEmpty. Operand 51296 states and 80466 transitions. [2022-07-13 21:15:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:15:44,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:44,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:15:44,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 21:15:44,741 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:44,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:44,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1036002169, now seen corresponding path program 1 times [2022-07-13 21:15:44,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:44,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29744878] [2022-07-13 21:15:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:44,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:15:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:15:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:15:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:15:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:15:44,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:44,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29744878] [2022-07-13 21:15:44,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29744878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:44,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:44,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:44,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814961327] [2022-07-13 21:15:44,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:44,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:44,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:44,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:44,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:44,844 INFO L87 Difference]: Start difference. First operand 51296 states and 80466 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:15:56,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:56,594 INFO L93 Difference]: Finished difference Result 116186 states and 186107 transitions. [2022-07-13 21:15:56,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:15:56,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:15:56,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:56,778 INFO L225 Difference]: With dead ends: 116186 [2022-07-13 21:15:56,779 INFO L226 Difference]: Without dead ends: 67100 [2022-07-13 21:15:56,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:15:56,875 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 1416 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:56,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1983 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:15:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67100 states. [2022-07-13 21:16:03,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67100 to 51296. [2022-07-13 21:16:03,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51296 states, 47284 states have (on average 1.525357414770324) internal successors, (72125), 47431 states have internal predecessors, (72125), 2905 states have call successors, (2905), 922 states have call predecessors, (2905), 1105 states have return successors, (5307), 3070 states have call predecessors, (5307), 2902 states have call successors, (5307) [2022-07-13 21:16:03,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51296 states to 51296 states and 80337 transitions. [2022-07-13 21:16:03,215 INFO L78 Accepts]: Start accepts. Automaton has 51296 states and 80337 transitions. Word has length 190 [2022-07-13 21:16:03,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:03,215 INFO L495 AbstractCegarLoop]: Abstraction has 51296 states and 80337 transitions. [2022-07-13 21:16:03,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:03,215 INFO L276 IsEmpty]: Start isEmpty. Operand 51296 states and 80337 transitions. [2022-07-13 21:16:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:16:03,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:03,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:16:03,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 21:16:03,229 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:03,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:03,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1421864571, now seen corresponding path program 1 times [2022-07-13 21:16:03,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:03,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000712139] [2022-07-13 21:16:03,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:03,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:03,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:16:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:03,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:16:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:16:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:16:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:03,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:03,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000712139] [2022-07-13 21:16:03,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000712139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:03,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:03,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:03,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666721915] [2022-07-13 21:16:03,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:03,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:03,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:03,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:03,331 INFO L87 Difference]: Start difference. First operand 51296 states and 80337 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:33,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:33,474 INFO L93 Difference]: Finished difference Result 196485 states and 312521 transitions. [2022-07-13 21:16:33,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:16:33,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:16:33,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:33,837 INFO L225 Difference]: With dead ends: 196485 [2022-07-13 21:16:33,837 INFO L226 Difference]: Without dead ends: 147399 [2022-07-13 21:16:34,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:16:34,130 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 2225 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 3324 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 3357 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:34,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2269 Valid, 3357 Invalid, 3454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3324 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:16:34,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147399 states. [2022-07-13 21:16:46,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147399 to 100066. [2022-07-13 21:16:46,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100066 states, 92598 states have (on average 1.5323117129959611) internal successors, (141889), 92873 states have internal predecessors, (141889), 5465 states have call successors, (5465), 1690 states have call predecessors, (5465), 2001 states have return successors, (12369), 5758 states have call predecessors, (12369), 5462 states have call successors, (12369) [2022-07-13 21:16:47,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100066 states to 100066 states and 159723 transitions. [2022-07-13 21:16:47,019 INFO L78 Accepts]: Start accepts. Automaton has 100066 states and 159723 transitions. Word has length 190 [2022-07-13 21:16:47,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:16:47,020 INFO L495 AbstractCegarLoop]: Abstraction has 100066 states and 159723 transitions. [2022-07-13 21:16:47,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:16:47,020 INFO L276 IsEmpty]: Start isEmpty. Operand 100066 states and 159723 transitions. [2022-07-13 21:16:47,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-13 21:16:47,048 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:16:47,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:16:47,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 21:16:47,048 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:16:47,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:16:47,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1157217081, now seen corresponding path program 1 times [2022-07-13 21:16:47,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:16:47,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653866582] [2022-07-13 21:16:47,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:16:47,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:16:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:16:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-13 21:16:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:47,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-13 21:16:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:47,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 21:16:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:47,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-13 21:16:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:16:47,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:16:47,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:16:47,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653866582] [2022-07-13 21:16:47,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653866582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:16:47,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:16:47,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:16:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809986265] [2022-07-13 21:16:47,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:16:47,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:16:47,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:16:47,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:16:47,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:16:47,159 INFO L87 Difference]: Start difference. First operand 100066 states and 159723 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-13 21:17:46,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:17:46,274 INFO L93 Difference]: Finished difference Result 385157 states and 622113 transitions. [2022-07-13 21:17:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:17:46,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-07-13 21:17:46,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:17:47,367 INFO L225 Difference]: With dead ends: 385157 [2022-07-13 21:17:47,368 INFO L226 Difference]: Without dead ends: 287301 [2022-07-13 21:17:47,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:17:47,624 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 2029 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2058 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 3632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:17:47,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2058 Valid, 2552 Invalid, 3632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 21:17:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287301 states.