./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.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.14.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 a6e26dc8018dcf216dd711848cc7425da3593cca9604197466413681bb8c438e --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:13:22,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:13:22,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:13:22,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:13:22,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:13:22,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:13:22,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:13:22,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:13:22,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:13:22,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:13:22,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:13:22,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:13:22,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:13:22,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:13:22,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:13:22,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:13:22,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:13:22,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:13:22,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:13:22,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:13:22,972 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:13:22,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:13:22,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:13:22,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:13:22,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:13:23,003 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:13:23,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:13:23,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:13:23,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:13:23,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:13:23,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:13:23,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:13:23,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:13:23,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:13:23,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:13:23,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:13:23,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:13:23,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:13:23,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:13:23,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:13:23,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:13:23,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:13:23,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:13:23,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:13:23,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:13:23,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:13:23,035 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:13:23,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:13:23,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:13:23,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:13:23,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:13:23,037 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:13:23,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:13:23,038 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:13:23,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:13:23,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:13:23,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:13:23,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:13:23,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:13:23,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:13:23,039 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:13:23,039 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:13:23,039 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:13:23,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:13:23,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:13:23,040 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:13:23,040 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:13:23,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:13:23,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:13:23,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:13:23,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:13:23,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:13:23,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:13:23,041 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:13:23,042 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:13:23,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:13:23,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a6e26dc8018dcf216dd711848cc7425da3593cca9604197466413681bb8c438e [2022-07-13 21:13:23,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:13:23,256 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:13:23,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:13:23,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:13:23,262 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:13:23,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c [2022-07-13 21:13:23,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9bc660b/28502a8951fb4d5ca8bcda98749d43b5/FLAG5c93565b5 [2022-07-13 21:13:23,715 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:13:23,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.14.cil.c [2022-07-13 21:13:23,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9bc660b/28502a8951fb4d5ca8bcda98749d43b5/FLAG5c93565b5 [2022-07-13 21:13:24,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc9bc660b/28502a8951fb4d5ca8bcda98749d43b5 [2022-07-13 21:13:24,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:13:24,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:13:24,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:13:24,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:13:24,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:13:24,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:13:24" (1/1) ... [2022-07-13 21:13:24,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5577b31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24, skipping insertion in model container [2022-07-13 21:13:24,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:13:24" (1/1) ... [2022-07-13 21:13:24,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:13:24,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:13:24,287 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.14.cil.c[914,927] [2022-07-13 21:13:24,344 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.14.cil.c[7115,7128] [2022-07-13 21:13:24,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:13:24,456 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:13:24,463 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.14.cil.c[914,927] [2022-07-13 21:13:24,474 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.14.cil.c[7115,7128] [2022-07-13 21:13:24,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:13:24,546 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:13:24,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24 WrapperNode [2022-07-13 21:13:24,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:13:24,548 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:13:24,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:13:24,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:13:24,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24" (1/1) ... [2022-07-13 21:13:24,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24" (1/1) ... [2022-07-13 21:13:24,601 INFO L137 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1043 [2022-07-13 21:13:24,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:13:24,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:13:24,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:13:24,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:13:24,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24" (1/1) ... [2022-07-13 21:13:24,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24" (1/1) ... [2022-07-13 21:13:24,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24" (1/1) ... [2022-07-13 21:13:24,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24" (1/1) ... [2022-07-13 21:13:24,634 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24" (1/1) ... [2022-07-13 21:13:24,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24" (1/1) ... [2022-07-13 21:13:24,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24" (1/1) ... [2022-07-13 21:13:24,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:13:24,650 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:13:24,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:13:24,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:13:24,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24" (1/1) ... [2022-07-13 21:13:24,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:13:24,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:13:24,675 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 21:13:24,706 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 21:13:24,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:13:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 21:13:24,717 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 21:13:24,717 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-13 21:13:24,718 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-13 21:13:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-13 21:13:24,718 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-13 21:13:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-13 21:13:24,718 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-13 21:13:24,718 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-13 21:13:24,719 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-13 21:13:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-13 21:13:24,719 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-13 21:13:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-13 21:13:24,719 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-13 21:13:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-13 21:13:24,719 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-13 21:13:24,719 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-13 21:13:24,720 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-13 21:13:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-13 21:13:24,720 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-13 21:13:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-13 21:13:24,720 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-13 21:13:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:13:24,720 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-13 21:13:24,720 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-13 21:13:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-13 21:13:24,721 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-13 21:13:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:13:24,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:13:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-13 21:13:24,721 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-13 21:13:24,721 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-13 21:13:24,722 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-13 21:13:24,865 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:13:24,866 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:13:25,405 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:13:25,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:13:25,413 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-07-13 21:13:25,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:13:25 BoogieIcfgContainer [2022-07-13 21:13:25,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:13:25,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:13:25,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:13:25,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:13:25,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:13:24" (1/3) ... [2022-07-13 21:13:25,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c26758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:13:25, skipping insertion in model container [2022-07-13 21:13:25,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:13:24" (2/3) ... [2022-07-13 21:13:25,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c26758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:13:25, skipping insertion in model container [2022-07-13 21:13:25,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:13:25" (3/3) ... [2022-07-13 21:13:25,421 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.14.cil.c [2022-07-13 21:13:25,430 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:13:25,430 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:13:25,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:13:25,472 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@204a464d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@41343318 [2022-07-13 21:13:25,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:13:25,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 489 states, 429 states have (on average 1.6433566433566433) internal successors, (705), 437 states have internal predecessors, (705), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-13 21:13:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:25,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:25,485 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 21:13:25,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:25,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:25,489 INFO L85 PathProgramCache]: Analyzing trace with hash 956122995, now seen corresponding path program 1 times [2022-07-13 21:13:25,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:25,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085995166] [2022-07-13 21:13:25,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:25,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:25,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:25,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:25,798 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 21:13:25,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:25,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085995166] [2022-07-13 21:13:25,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085995166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:25,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:25,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:13:25,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839267570] [2022-07-13 21:13:25,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:25,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:13:25,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:25,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:13:25,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:13:25,835 INFO L87 Difference]: Start difference. First operand has 489 states, 429 states have (on average 1.6433566433566433) internal successors, (705), 437 states have internal predecessors, (705), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) 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 21:13:26,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:26,743 INFO L93 Difference]: Finished difference Result 1084 states and 1736 transitions. [2022-07-13 21:13:26,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:13:26,745 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 21:13:26,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:26,755 INFO L225 Difference]: With dead ends: 1084 [2022-07-13 21:13:26,755 INFO L226 Difference]: Without dead ends: 613 [2022-07-13 21:13:26,760 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 21:13:26,762 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 1209 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 2488 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:26,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 2488 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:13:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-07-13 21:13:26,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 574. [2022-07-13 21:13:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 497 states have (on average 1.529175050301811) internal successors, (760), 504 states have internal predecessors, (760), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2022-07-13 21:13:26,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 867 transitions. [2022-07-13 21:13:26,824 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 867 transitions. Word has length 65 [2022-07-13 21:13:26,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:26,824 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 867 transitions. [2022-07-13 21:13:26,825 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 21:13:26,825 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 867 transitions. [2022-07-13 21:13:26,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:26,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:26,827 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 21:13:26,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:13:26,828 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:26,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:26,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1359908946, now seen corresponding path program 1 times [2022-07-13 21:13:26,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:26,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499895527] [2022-07-13 21:13:26,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:26,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:26,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:26,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:26,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:26,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:26,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:26,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:26,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:26,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:26,922 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 21:13:26,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:26,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499895527] [2022-07-13 21:13:26,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499895527] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:26,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:26,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:13:26,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058482603] [2022-07-13 21:13:26,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:26,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:13:26,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:26,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:13:26,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:13:26,926 INFO L87 Difference]: Start difference. First operand 574 states and 867 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 21:13:27,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:27,917 INFO L93 Difference]: Finished difference Result 921 states and 1344 transitions. [2022-07-13 21:13:27,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:13:27,917 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 21:13:27,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:27,921 INFO L225 Difference]: With dead ends: 921 [2022-07-13 21:13:27,921 INFO L226 Difference]: Without dead ends: 744 [2022-07-13 21:13:27,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-13 21:13:27,923 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 1480 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:27,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 2717 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:13:27,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-07-13 21:13:27,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 670. [2022-07-13 21:13:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 573 states have (on average 1.5078534031413613) internal successors, (864), 582 states have internal predecessors, (864), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-13 21:13:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 1001 transitions. [2022-07-13 21:13:27,970 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 1001 transitions. Word has length 65 [2022-07-13 21:13:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:27,970 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 1001 transitions. [2022-07-13 21:13:27,971 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 21:13:27,971 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 1001 transitions. [2022-07-13 21:13:27,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:27,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:27,973 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 21:13:27,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:13:27,973 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:27,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:27,974 INFO L85 PathProgramCache]: Analyzing trace with hash -668677164, now seen corresponding path program 1 times [2022-07-13 21:13:27,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:27,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429468523] [2022-07-13 21:13:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:27,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:28,095 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 21:13:28,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:28,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429468523] [2022-07-13 21:13:28,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429468523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:28,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:28,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:13:28,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200067604] [2022-07-13 21:13:28,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:28,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:13:28,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:28,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:13:28,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:13:28,099 INFO L87 Difference]: Start difference. First operand 670 states and 1001 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 21:13:28,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:28,998 INFO L93 Difference]: Finished difference Result 971 states and 1415 transitions. [2022-07-13 21:13:28,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:13:28,999 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 21:13:28,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:29,002 INFO L225 Difference]: With dead ends: 971 [2022-07-13 21:13:29,002 INFO L226 Difference]: Without dead ends: 704 [2022-07-13 21:13:29,003 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 21:13:29,004 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 971 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 2874 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:29,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 2874 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:13:29,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-13 21:13:29,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 675. [2022-07-13 21:13:29,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 577 states have (on average 1.5008665511265165) internal successors, (866), 586 states have internal predecessors, (866), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (74), 63 states have call predecessors, (74), 60 states have call successors, (74) [2022-07-13 21:13:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1004 transitions. [2022-07-13 21:13:29,036 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1004 transitions. Word has length 65 [2022-07-13 21:13:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:29,036 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1004 transitions. [2022-07-13 21:13:29,036 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 21:13:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1004 transitions. [2022-07-13 21:13:29,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:29,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:29,040 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 21:13:29,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:13:29,041 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:29,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:29,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1698036462, now seen corresponding path program 1 times [2022-07-13 21:13:29,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:29,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393184382] [2022-07-13 21:13:29,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:29,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:29,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:29,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:29,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:13:29,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:29,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393184382] [2022-07-13 21:13:29,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393184382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:29,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:29,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:13:29,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694951191] [2022-07-13 21:13:29,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:29,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:13:29,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:13:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:13:29,131 INFO L87 Difference]: Start difference. First operand 675 states and 1004 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 21:13:30,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:30,491 INFO L93 Difference]: Finished difference Result 1997 states and 2800 transitions. [2022-07-13 21:13:30,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 21:13:30,491 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 21:13:30,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:30,497 INFO L225 Difference]: With dead ends: 1997 [2022-07-13 21:13:30,497 INFO L226 Difference]: Without dead ends: 1707 [2022-07-13 21:13:30,499 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 21:13:30,499 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 4059 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4073 SdHoareTripleChecker+Valid, 2605 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 719 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:30,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4073 Valid, 2605 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [719 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:13:30,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2022-07-13 21:13:30,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1576. [2022-07-13 21:13:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1292 states have (on average 1.3970588235294117) internal successors, (1805), 1316 states have internal predecessors, (1805), 152 states have call successors, (152), 112 states have call predecessors, (152), 130 states have return successors, (188), 150 states have call predecessors, (188), 148 states have call successors, (188) [2022-07-13 21:13:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2145 transitions. [2022-07-13 21:13:30,546 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2145 transitions. Word has length 65 [2022-07-13 21:13:30,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:30,546 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2145 transitions. [2022-07-13 21:13:30,546 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 21:13:30,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2145 transitions. [2022-07-13 21:13:30,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:30,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:30,547 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 21:13:30,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:13:30,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:30,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:30,554 INFO L85 PathProgramCache]: Analyzing trace with hash -2104827032, now seen corresponding path program 1 times [2022-07-13 21:13:30,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:30,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386545843] [2022-07-13 21:13:30,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:30,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:30,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:30,623 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 21:13:30,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:30,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386545843] [2022-07-13 21:13:30,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386545843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:30,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:30,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:13:30,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450152062] [2022-07-13 21:13:30,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:30,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:13:30,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:30,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:13:30,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:13:30,625 INFO L87 Difference]: Start difference. First operand 1576 states and 2145 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 21:13:31,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:31,545 INFO L93 Difference]: Finished difference Result 2867 states and 3818 transitions. [2022-07-13 21:13:31,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:13:31,546 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 21:13:31,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:31,552 INFO L225 Difference]: With dead ends: 2867 [2022-07-13 21:13:31,552 INFO L226 Difference]: Without dead ends: 1682 [2022-07-13 21:13:31,554 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 21:13:31,559 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 652 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:31,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 3200 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:13:31,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2022-07-13 21:13:31,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1606. [2022-07-13 21:13:31,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1316 states have (on average 1.3837386018237081) internal successors, (1821), 1340 states have internal predecessors, (1821), 152 states have call successors, (152), 112 states have call predecessors, (152), 136 states have return successors, (194), 156 states have call predecessors, (194), 148 states have call successors, (194) [2022-07-13 21:13:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2167 transitions. [2022-07-13 21:13:31,602 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2167 transitions. Word has length 65 [2022-07-13 21:13:31,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:31,602 INFO L495 AbstractCegarLoop]: Abstraction has 1606 states and 2167 transitions. [2022-07-13 21:13:31,602 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 21:13:31,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2167 transitions. [2022-07-13 21:13:31,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:31,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:31,604 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 21:13:31,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:13:31,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:31,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:31,605 INFO L85 PathProgramCache]: Analyzing trace with hash -718623638, now seen corresponding path program 1 times [2022-07-13 21:13:31,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:31,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859860333] [2022-07-13 21:13:31,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:31,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:31,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:31,691 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 21:13:31,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:31,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859860333] [2022-07-13 21:13:31,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859860333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:31,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:31,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:13:31,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576033348] [2022-07-13 21:13:31,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:31,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:13:31,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:31,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:13:31,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:13:31,695 INFO L87 Difference]: Start difference. First operand 1606 states and 2167 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 21:13:32,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:32,502 INFO L93 Difference]: Finished difference Result 2861 states and 3714 transitions. [2022-07-13 21:13:32,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 21:13:32,502 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 21:13:32,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:32,508 INFO L225 Difference]: With dead ends: 2861 [2022-07-13 21:13:32,508 INFO L226 Difference]: Without dead ends: 1869 [2022-07-13 21:13:32,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-13 21:13:32,512 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 1439 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 1435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:32,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2466 Invalid, 1435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 21:13:32,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1869 states. [2022-07-13 21:13:32,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1869 to 1548. [2022-07-13 21:13:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1274 states have (on average 1.3814756671899528) internal successors, (1760), 1293 states have internal predecessors, (1760), 146 states have call successors, (146), 107 states have call predecessors, (146), 126 states have return successors, (179), 149 states have call predecessors, (179), 142 states have call successors, (179) [2022-07-13 21:13:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2085 transitions. [2022-07-13 21:13:32,573 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2085 transitions. Word has length 65 [2022-07-13 21:13:32,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:32,574 INFO L495 AbstractCegarLoop]: Abstraction has 1548 states and 2085 transitions. [2022-07-13 21:13:32,574 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 21:13:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2085 transitions. [2022-07-13 21:13:32,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-13 21:13:32,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:32,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:32,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:13:32,575 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:32,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:32,575 INFO L85 PathProgramCache]: Analyzing trace with hash -852637144, now seen corresponding path program 1 times [2022-07-13 21:13:32,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:32,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88483988] [2022-07-13 21:13:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:32,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:32,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:32,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:32,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:32,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:32,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:32,637 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 21:13:32,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:32,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88483988] [2022-07-13 21:13:32,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88483988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:32,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:32,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:32,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347777406] [2022-07-13 21:13:32,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:32,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:32,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:32,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:32,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:32,639 INFO L87 Difference]: Start difference. First operand 1548 states and 2085 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 21:13:33,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:33,003 INFO L93 Difference]: Finished difference Result 3887 states and 5046 transitions. [2022-07-13 21:13:33,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 21:13:33,003 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 21:13:33,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:33,014 INFO L225 Difference]: With dead ends: 3887 [2022-07-13 21:13:33,014 INFO L226 Difference]: Without dead ends: 2731 [2022-07-13 21:13:33,016 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 21:13:33,019 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 1410 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:33,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 2079 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 21:13:33,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2022-07-13 21:13:33,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2611. [2022-07-13 21:13:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2094 states have (on average 1.3142311365807067) internal successors, (2752), 2130 states have internal predecessors, (2752), 265 states have call successors, (265), 206 states have call predecessors, (265), 250 states have return successors, (370), 277 states have call predecessors, (370), 261 states have call successors, (370) [2022-07-13 21:13:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 3387 transitions. [2022-07-13 21:13:33,102 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 3387 transitions. Word has length 65 [2022-07-13 21:13:33,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:33,102 INFO L495 AbstractCegarLoop]: Abstraction has 2611 states and 3387 transitions. [2022-07-13 21:13:33,103 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 21:13:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 3387 transitions. [2022-07-13 21:13:33,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 21:13:33,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:33,105 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 21:13:33,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:13:33,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:33,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:33,106 INFO L85 PathProgramCache]: Analyzing trace with hash 20568174, now seen corresponding path program 1 times [2022-07-13 21:13:33,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:33,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120134563] [2022-07-13 21:13:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:33,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,162 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 21:13:33,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:33,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120134563] [2022-07-13 21:13:33,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120134563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:33,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:33,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:13:33,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783788290] [2022-07-13 21:13:33,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:33,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:13:33,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:13:33,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:13:33,165 INFO L87 Difference]: Start difference. First operand 2611 states and 3387 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 21:13:33,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:33,753 INFO L93 Difference]: Finished difference Result 5927 states and 7532 transitions. [2022-07-13 21:13:33,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:13:33,753 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 21:13:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:33,768 INFO L225 Difference]: With dead ends: 5927 [2022-07-13 21:13:33,769 INFO L226 Difference]: Without dead ends: 3713 [2022-07-13 21:13:33,772 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 21:13:33,773 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 828 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:33,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 2066 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:13:33,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2022-07-13 21:13:33,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3445. [2022-07-13 21:13:33,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 2742 states have (on average 1.2935813274981764) internal successors, (3547), 2783 states have internal predecessors, (3547), 357 states have call successors, (357), 286 states have call predecessors, (357), 344 states have return successors, (484), 378 states have call predecessors, (484), 353 states have call successors, (484) [2022-07-13 21:13:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 4388 transitions. [2022-07-13 21:13:33,905 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 4388 transitions. Word has length 66 [2022-07-13 21:13:33,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:33,905 INFO L495 AbstractCegarLoop]: Abstraction has 3445 states and 4388 transitions. [2022-07-13 21:13:33,906 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 21:13:33,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 4388 transitions. [2022-07-13 21:13:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 21:13:33,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:33,909 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 21:13:33,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:13:33,909 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:33,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:33,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1226736109, now seen corresponding path program 1 times [2022-07-13 21:13:33,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:33,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353469794] [2022-07-13 21:13:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:33,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:33,961 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 21:13:33,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:33,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353469794] [2022-07-13 21:13:33,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353469794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:33,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:33,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:13:33,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685645669] [2022-07-13 21:13:33,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:33,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:13:33,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:33,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:13:33,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:13:33,964 INFO L87 Difference]: Start difference. First operand 3445 states and 4388 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 21:13:34,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:34,385 INFO L93 Difference]: Finished difference Result 7317 states and 9162 transitions. [2022-07-13 21:13:34,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:13:34,385 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 21:13:34,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:34,397 INFO L225 Difference]: With dead ends: 7317 [2022-07-13 21:13:34,397 INFO L226 Difference]: Without dead ends: 4267 [2022-07-13 21:13:34,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 21:13:34,403 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1381 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:34,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 1813 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:13:34,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2022-07-13 21:13:34,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 3999. [2022-07-13 21:13:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3999 states, 3182 states have (on average 1.2844123192960402) internal successors, (4087), 3227 states have internal predecessors, (4087), 413 states have call successors, (413), 336 states have call predecessors, (413), 402 states have return successors, (557), 438 states have call predecessors, (557), 409 states have call successors, (557) [2022-07-13 21:13:34,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 5057 transitions. [2022-07-13 21:13:34,521 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 5057 transitions. Word has length 72 [2022-07-13 21:13:34,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:34,522 INFO L495 AbstractCegarLoop]: Abstraction has 3999 states and 5057 transitions. [2022-07-13 21:13:34,522 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 21:13:34,523 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 5057 transitions. [2022-07-13 21:13:34,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 21:13:34,524 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:34,524 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 21:13:34,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:13:34,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:34,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1142832314, now seen corresponding path program 1 times [2022-07-13 21:13:34,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:34,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071708730] [2022-07-13 21:13:34,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:34,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:34,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:34,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:34,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:34,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:34,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:34,588 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 21:13:34,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:34,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071708730] [2022-07-13 21:13:34,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071708730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:34,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:34,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:34,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239559180] [2022-07-13 21:13:34,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:34,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:34,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:34,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:34,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:34,606 INFO L87 Difference]: Start difference. First operand 3999 states and 5057 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 21:13:35,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:35,057 INFO L93 Difference]: Finished difference Result 5085 states and 6352 transitions. [2022-07-13 21:13:35,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:13:35,057 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 21:13:35,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:35,075 INFO L225 Difference]: With dead ends: 5085 [2022-07-13 21:13:35,075 INFO L226 Difference]: Without dead ends: 5082 [2022-07-13 21:13:35,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-13 21:13:35,079 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 2428 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2438 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:35,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2438 Valid, 1450 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:13:35,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5082 states. [2022-07-13 21:13:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5082 to 4461. [2022-07-13 21:13:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4461 states, 3537 states have (on average 1.2731128074639526) internal successors, (4503), 3585 states have internal predecessors, (4503), 463 states have call successors, (463), 380 states have call predecessors, (463), 459 states have return successors, (634), 498 states have call predecessors, (634), 460 states have call successors, (634) [2022-07-13 21:13:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4461 states to 4461 states and 5600 transitions. [2022-07-13 21:13:35,257 INFO L78 Accepts]: Start accepts. Automaton has 4461 states and 5600 transitions. Word has length 73 [2022-07-13 21:13:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:35,258 INFO L495 AbstractCegarLoop]: Abstraction has 4461 states and 5600 transitions. [2022-07-13 21:13:35,258 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 21:13:35,258 INFO L276 IsEmpty]: Start isEmpty. Operand 4461 states and 5600 transitions. [2022-07-13 21:13:35,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 21:13:35,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:35,259 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 21:13:35,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:13:35,259 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:35,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1069513385, now seen corresponding path program 1 times [2022-07-13 21:13:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:35,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116772596] [2022-07-13 21:13:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:35,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:35,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,348 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 21:13:35,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:35,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116772596] [2022-07-13 21:13:35,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116772596] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:13:35,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7812681] [2022-07-13 21:13:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:35,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:13:35,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:13:35,359 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 21:13:35,392 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 21:13:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:35,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 21:13:35,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:13:35,825 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 21:13:35,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:13:35,967 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 21:13:35,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7812681] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 21:13:35,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 21:13:35,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-13 21:13:35,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764287552] [2022-07-13 21:13:35,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 21:13:35,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:13:35,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:35,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:13:35,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:13:35,969 INFO L87 Difference]: Start difference. First operand 4461 states and 5600 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 21:13:37,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:37,237 INFO L93 Difference]: Finished difference Result 8779 states and 10809 transitions. [2022-07-13 21:13:37,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 21:13:37,238 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 21:13:37,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:37,266 INFO L225 Difference]: With dead ends: 8779 [2022-07-13 21:13:37,266 INFO L226 Difference]: Without dead ends: 8776 [2022-07-13 21:13:37,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-07-13 21:13:37,271 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 2377 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 1598 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 2516 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 1598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:37,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2441 Valid, 2516 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 1598 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 21:13:37,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8776 states. [2022-07-13 21:13:37,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8776 to 7878. [2022-07-13 21:13:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7878 states, 6212 states have (on average 1.2533805537669027) internal successors, (7786), 6295 states have internal predecessors, (7786), 822 states have call successors, (822), 694 states have call predecessors, (822), 842 states have return successors, (1135), 891 states have call predecessors, (1135), 819 states have call successors, (1135) [2022-07-13 21:13:37,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7878 states to 7878 states and 9743 transitions. [2022-07-13 21:13:37,606 INFO L78 Accepts]: Start accepts. Automaton has 7878 states and 9743 transitions. Word has length 74 [2022-07-13 21:13:37,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:37,606 INFO L495 AbstractCegarLoop]: Abstraction has 7878 states and 9743 transitions. [2022-07-13 21:13:37,606 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 21:13:37,606 INFO L276 IsEmpty]: Start isEmpty. Operand 7878 states and 9743 transitions. [2022-07-13 21:13:37,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 21:13:37,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:37,608 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 21:13:37,638 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 21:13:37,824 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,SelfDestructingSolverStorable10 [2022-07-13 21:13:37,825 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:37,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:37,825 INFO L85 PathProgramCache]: Analyzing trace with hash 850950662, now seen corresponding path program 2 times [2022-07-13 21:13:37,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:37,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873526353] [2022-07-13 21:13:37,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:37,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:37,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:37,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:37,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:37,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:37,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:37,865 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 21:13:37,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:37,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873526353] [2022-07-13 21:13:37,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873526353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:37,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:37,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:13:37,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496582159] [2022-07-13 21:13:37,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:37,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:13:37,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:37,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:13:37,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:13:37,867 INFO L87 Difference]: Start difference. First operand 7878 states and 9743 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 21:13:38,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:38,305 INFO L93 Difference]: Finished difference Result 10472 states and 12952 transitions. [2022-07-13 21:13:38,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:13:38,305 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 21:13:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:38,352 INFO L225 Difference]: With dead ends: 10472 [2022-07-13 21:13:38,353 INFO L226 Difference]: Without dead ends: 4298 [2022-07-13 21:13:38,361 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 21:13:38,361 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 1318 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:38,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 1870 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 21:13:38,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4298 states. [2022-07-13 21:13:38,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4298 to 3290. [2022-07-13 21:13:38,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3290 states, 2630 states have (on average 1.2688212927756655) internal successors, (3337), 2659 states have internal predecessors, (3337), 341 states have call successors, (341), 276 states have call predecessors, (341), 317 states have return successors, (434), 357 states have call predecessors, (434), 338 states have call successors, (434) [2022-07-13 21:13:38,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3290 states to 3290 states and 4112 transitions. [2022-07-13 21:13:38,504 INFO L78 Accepts]: Start accepts. Automaton has 3290 states and 4112 transitions. Word has length 77 [2022-07-13 21:13:38,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:38,504 INFO L495 AbstractCegarLoop]: Abstraction has 3290 states and 4112 transitions. [2022-07-13 21:13:38,505 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 21:13:38,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3290 states and 4112 transitions. [2022-07-13 21:13:38,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-13 21:13:38,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:38,506 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 21:13:38,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:13:38,507 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:38,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:38,507 INFO L85 PathProgramCache]: Analyzing trace with hash -416080695, now seen corresponding path program 1 times [2022-07-13 21:13:38,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:38,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633729644] [2022-07-13 21:13:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:38,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:13:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:38,572 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 21:13:38,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:38,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633729644] [2022-07-13 21:13:38,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633729644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:38,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:38,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 21:13:38,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134582027] [2022-07-13 21:13:38,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:38,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 21:13:38,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 21:13:38,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:13:38,574 INFO L87 Difference]: Start difference. First operand 3290 states and 4112 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 21:13:39,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:39,662 INFO L93 Difference]: Finished difference Result 9074 states and 11109 transitions. [2022-07-13 21:13:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 21:13:39,663 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 21:13:39,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:39,674 INFO L225 Difference]: With dead ends: 9074 [2022-07-13 21:13:39,674 INFO L226 Difference]: Without dead ends: 5376 [2022-07-13 21:13:39,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-13 21:13:39,680 INFO L413 NwaCegarLoop]: 771 mSDtfsCounter, 1894 mSDsluCounter, 1437 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 2208 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:39,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1906 Valid, 2208 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:13:39,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2022-07-13 21:13:39,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 5116. [2022-07-13 21:13:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5116 states, 4021 states have (on average 1.2302909723949267) internal successors, (4947), 4087 states have internal predecessors, (4947), 541 states have call successors, (541), 448 states have call predecessors, (541), 552 states have return successors, (784), 583 states have call predecessors, (784), 538 states have call successors, (784) [2022-07-13 21:13:39,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5116 states to 5116 states and 6272 transitions. [2022-07-13 21:13:39,852 INFO L78 Accepts]: Start accepts. Automaton has 5116 states and 6272 transitions. Word has length 84 [2022-07-13 21:13:39,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:39,852 INFO L495 AbstractCegarLoop]: Abstraction has 5116 states and 6272 transitions. [2022-07-13 21:13:39,853 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 21:13:39,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5116 states and 6272 transitions. [2022-07-13 21:13:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-13 21:13:39,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:39,855 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 21:13:39,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:13:39,855 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:39,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:39,855 INFO L85 PathProgramCache]: Analyzing trace with hash 322850660, now seen corresponding path program 1 times [2022-07-13 21:13:39,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:39,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865844944] [2022-07-13 21:13:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:39,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:39,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:39,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:39,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:39,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:39,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:39,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 21:13:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:39,921 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 21:13:39,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:39,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865844944] [2022-07-13 21:13:39,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865844944] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:39,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:39,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:13:39,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121075018] [2022-07-13 21:13:39,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:39,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:13:39,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:39,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:13:39,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:13:39,924 INFO L87 Difference]: Start difference. First operand 5116 states and 6272 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 21:13:40,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:40,989 INFO L93 Difference]: Finished difference Result 8476 states and 10290 transitions. [2022-07-13 21:13:40,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 21:13:40,990 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 21:13:40,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:40,999 INFO L225 Difference]: With dead ends: 8476 [2022-07-13 21:13:41,000 INFO L226 Difference]: Without dead ends: 4277 [2022-07-13 21:13:41,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-13 21:13:41,007 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 1953 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:41,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 2569 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:13:41,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2022-07-13 21:13:41,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 3856. [2022-07-13 21:13:41,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3027 states have (on average 1.2226627023455567) internal successors, (3701), 3081 states have internal predecessors, (3701), 406 states have call successors, (406), 330 states have call predecessors, (406), 421 states have return successors, (553), 447 states have call predecessors, (553), 403 states have call successors, (553) [2022-07-13 21:13:41,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 4660 transitions. [2022-07-13 21:13:41,174 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 4660 transitions. Word has length 93 [2022-07-13 21:13:41,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:41,174 INFO L495 AbstractCegarLoop]: Abstraction has 3856 states and 4660 transitions. [2022-07-13 21:13:41,174 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 21:13:41,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 4660 transitions. [2022-07-13 21:13:41,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-13 21:13:41,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:41,177 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 21:13:41,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:13:41,177 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:41,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:41,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1648604991, now seen corresponding path program 1 times [2022-07-13 21:13:41,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:41,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524683896] [2022-07-13 21:13:41,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:41,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:13:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 21:13:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 21:13:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 21:13:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 21:13:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 21:13:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 21:13:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,260 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 21:13:41,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:41,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524683896] [2022-07-13 21:13:41,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524683896] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:13:41,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71193144] [2022-07-13 21:13:41,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:41,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:13:41,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:13:41,262 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 21:13:41,263 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 21:13:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 21:13:41,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:13:41,409 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 21:13:41,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 21:13:41,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71193144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:41,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 21:13:41,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-13 21:13:41,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300003250] [2022-07-13 21:13:41,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:41,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:13:41,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:41,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:13:41,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 21:13:41,411 INFO L87 Difference]: Start difference. First operand 3856 states and 4660 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 21:13:41,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:41,500 INFO L93 Difference]: Finished difference Result 5731 states and 6899 transitions. [2022-07-13 21:13:41,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:41,501 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 21:13:41,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:41,505 INFO L225 Difference]: With dead ends: 5731 [2022-07-13 21:13:41,505 INFO L226 Difference]: Without dead ends: 2272 [2022-07-13 21:13:41,509 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 21:13:41,510 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 34 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3620 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 21:13:41,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3620 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:13:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2022-07-13 21:13:41,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2150. [2022-07-13 21:13:41,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1767 states have (on average 1.2512733446519524) internal successors, (2211), 1784 states have internal predecessors, (2211), 195 states have call successors, (195), 144 states have call predecessors, (195), 186 states have return successors, (260), 222 states have call predecessors, (260), 192 states have call successors, (260) [2022-07-13 21:13:41,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 2666 transitions. [2022-07-13 21:13:41,582 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 2666 transitions. Word has length 145 [2022-07-13 21:13:41,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:41,582 INFO L495 AbstractCegarLoop]: Abstraction has 2150 states and 2666 transitions. [2022-07-13 21:13:41,582 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 21:13:41,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 2666 transitions. [2022-07-13 21:13:41,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 21:13:41,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:41,584 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 21:13:41,601 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 21:13:41,801 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,SelfDestructingSolverStorable14 [2022-07-13 21:13:41,801 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:41,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:41,801 INFO L85 PathProgramCache]: Analyzing trace with hash 2137728743, now seen corresponding path program 1 times [2022-07-13 21:13:41,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:41,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399293757] [2022-07-13 21:13:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:41,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 21:13:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 21:13:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 21:13:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 21:13:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 21:13:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 21:13:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 21:13:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:41,861 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 21:13:41,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:41,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399293757] [2022-07-13 21:13:41,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399293757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:41,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:41,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:13:41,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901552289] [2022-07-13 21:13:41,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:41,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:13:41,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:41,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:13:41,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:13:41,863 INFO L87 Difference]: Start difference. First operand 2150 states and 2666 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 21:13:42,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:42,344 INFO L93 Difference]: Finished difference Result 2198 states and 2716 transitions. [2022-07-13 21:13:42,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:42,344 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 21:13:42,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:42,348 INFO L225 Difference]: With dead ends: 2198 [2022-07-13 21:13:42,348 INFO L226 Difference]: Without dead ends: 1824 [2022-07-13 21:13:42,349 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 21:13:42,349 INFO L413 NwaCegarLoop]: 712 mSDtfsCounter, 1068 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:42,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1669 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 21:13:42,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2022-07-13 21:13:42,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1779. [2022-07-13 21:13:42,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1480 states have (on average 1.2736486486486487) internal successors, (1885), 1494 states have internal predecessors, (1885), 154 states have call successors, (154), 109 states have call predecessors, (154), 143 states have return successors, (205), 176 states have call predecessors, (205), 151 states have call successors, (205) [2022-07-13 21:13:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2244 transitions. [2022-07-13 21:13:42,426 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2244 transitions. Word has length 147 [2022-07-13 21:13:42,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:42,426 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2244 transitions. [2022-07-13 21:13:42,427 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 21:13:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2244 transitions. [2022-07-13 21:13:42,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-13 21:13:42,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:42,429 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 21:13:42,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:13:42,429 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:42,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:42,430 INFO L85 PathProgramCache]: Analyzing trace with hash -2127164153, now seen corresponding path program 1 times [2022-07-13 21:13:42,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:42,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459722743] [2022-07-13 21:13:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:42,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:42,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:13:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:13:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 21:13:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 21:13:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 21:13:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 21:13:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 21:13:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:42,498 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 21:13:42,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:42,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459722743] [2022-07-13 21:13:42,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459722743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:42,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:42,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:42,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115729706] [2022-07-13 21:13:42,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:42,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:42,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:42,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:42,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:42,500 INFO L87 Difference]: Start difference. First operand 1779 states and 2244 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 21:13:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:43,132 INFO L93 Difference]: Finished difference Result 3045 states and 3743 transitions. [2022-07-13 21:13:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:13:43,133 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 21:13:43,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:43,137 INFO L225 Difference]: With dead ends: 3045 [2022-07-13 21:13:43,137 INFO L226 Difference]: Without dead ends: 1752 [2022-07-13 21:13:43,139 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 21:13:43,143 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 681 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:43,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 2501 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 21:13:43,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1752 states. [2022-07-13 21:13:43,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1752 to 1668. [2022-07-13 21:13:43,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1393 states have (on average 1.2835606604450827) internal successors, (1788), 1407 states have internal predecessors, (1788), 142 states have call successors, (142), 99 states have call predecessors, (142), 131 states have return successors, (187), 162 states have call predecessors, (187), 139 states have call successors, (187) [2022-07-13 21:13:43,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2117 transitions. [2022-07-13 21:13:43,199 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2117 transitions. Word has length 159 [2022-07-13 21:13:43,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:43,199 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2117 transitions. [2022-07-13 21:13:43,199 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 21:13:43,199 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2117 transitions. [2022-07-13 21:13:43,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 21:13:43,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:43,201 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:13:43,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:13:43,201 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:43,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:43,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1961116033, now seen corresponding path program 1 times [2022-07-13 21:13:43,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:43,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715399050] [2022-07-13 21:13:43,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:43,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 21:13:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 21:13:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 21:13:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 21:13:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 21:13:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 21:13:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 21:13:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 21:13:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 21:13:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 21:13:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 21:13:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 21:13:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 21:13:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-13 21:13:43,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:43,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715399050] [2022-07-13 21:13:43,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715399050] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 21:13:43,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219092646] [2022-07-13 21:13:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:43,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 21:13:43,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:13:43,328 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 21:13:43,329 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 21:13:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:43,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 21:13:43,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 21:13:43,553 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-13 21:13:43,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 21:13:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 21:13:43,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219092646] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 21:13:43,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 21:13:43,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-13 21:13:43,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756037812] [2022-07-13 21:13:43,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 21:13:43,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 21:13:43,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:43,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 21:13:43,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-13 21:13:43,746 INFO L87 Difference]: Start difference. First operand 1668 states and 2117 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-13 21:13:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:44,773 INFO L93 Difference]: Finished difference Result 3404 states and 4256 transitions. [2022-07-13 21:13:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-13 21:13:44,773 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-07-13 21:13:44,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:44,777 INFO L225 Difference]: With dead ends: 3404 [2022-07-13 21:13:44,777 INFO L226 Difference]: Without dead ends: 2059 [2022-07-13 21:13:44,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-13 21:13:44,780 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 2456 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 1522 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2487 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:44,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2487 Valid, 2044 Invalid, 1912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 1522 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:13:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2022-07-13 21:13:44,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1946. [2022-07-13 21:13:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1596 states have (on average 1.2474937343358397) internal successors, (1991), 1611 states have internal predecessors, (1991), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-13 21:13:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2429 transitions. [2022-07-13 21:13:44,845 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2429 transitions. Word has length 162 [2022-07-13 21:13:44,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:44,846 INFO L495 AbstractCegarLoop]: Abstraction has 1946 states and 2429 transitions. [2022-07-13 21:13:44,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-13 21:13:44,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2429 transitions. [2022-07-13 21:13:44,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:13:44,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:44,848 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] [2022-07-13 21:13:44,864 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 21:13:45,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 21:13:45,065 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:45,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1484709716, now seen corresponding path program 1 times [2022-07-13 21:13:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:45,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010033563] [2022-07-13 21:13:45,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:45,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:45,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:45,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:13:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:45,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:13:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:45,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:13:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:45,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:13:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:45,203 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 21:13:45,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:45,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010033563] [2022-07-13 21:13:45,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010033563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:45,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:45,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:13:45,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217019309] [2022-07-13 21:13:45,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:45,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:13:45,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:45,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:13:45,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:13:45,206 INFO L87 Difference]: Start difference. First operand 1946 states and 2429 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 21:13:46,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:46,526 INFO L93 Difference]: Finished difference Result 2461 states and 3263 transitions. [2022-07-13 21:13:46,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:46,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2022-07-13 21:13:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:46,530 INFO L225 Difference]: With dead ends: 2461 [2022-07-13 21:13:46,530 INFO L226 Difference]: Without dead ends: 2088 [2022-07-13 21:13:46,531 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 21:13:46,532 INFO L413 NwaCegarLoop]: 790 mSDtfsCounter, 1139 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:46,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 1356 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:13:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2022-07-13 21:13:46,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1946. [2022-07-13 21:13:46,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1596 states have (on average 1.2468671679197996) internal successors, (1990), 1611 states have internal predecessors, (1990), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-13 21:13:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2428 transitions. [2022-07-13 21:13:46,637 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2428 transitions. Word has length 179 [2022-07-13 21:13:46,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:46,637 INFO L495 AbstractCegarLoop]: Abstraction has 1946 states and 2428 transitions. [2022-07-13 21:13:46,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 21:13:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2428 transitions. [2022-07-13 21:13:46,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:13:46,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:46,639 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] [2022-07-13 21:13:46,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 21:13:46,639 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:46,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:46,640 INFO L85 PathProgramCache]: Analyzing trace with hash -794878226, now seen corresponding path program 1 times [2022-07-13 21:13:46,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:46,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571618556] [2022-07-13 21:13:46,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:46,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:46,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:46,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:46,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:13:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:46,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:13:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:46,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:13:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:46,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:13:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:46,736 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 21:13:46,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:46,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571618556] [2022-07-13 21:13:46,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571618556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:46,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:46,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:13:46,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095638400] [2022-07-13 21:13:46,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:46,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:13:46,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:46,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:13:46,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:13:46,738 INFO L87 Difference]: Start difference. First operand 1946 states and 2428 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 21:13:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:48,061 INFO L93 Difference]: Finished difference Result 2453 states and 3246 transitions. [2022-07-13 21:13:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:48,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 179 [2022-07-13 21:13:48,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:48,067 INFO L225 Difference]: With dead ends: 2453 [2022-07-13 21:13:48,067 INFO L226 Difference]: Without dead ends: 2088 [2022-07-13 21:13:48,068 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 21:13:48,069 INFO L413 NwaCegarLoop]: 789 mSDtfsCounter, 1130 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:48,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1354 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:13:48,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2022-07-13 21:13:48,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1946. [2022-07-13 21:13:48,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1946 states, 1596 states have (on average 1.2462406015037595) internal successors, (1989), 1611 states have internal predecessors, (1989), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-13 21:13:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1946 states to 1946 states and 2427 transitions. [2022-07-13 21:13:48,197 INFO L78 Accepts]: Start accepts. Automaton has 1946 states and 2427 transitions. Word has length 179 [2022-07-13 21:13:48,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:48,197 INFO L495 AbstractCegarLoop]: Abstraction has 1946 states and 2427 transitions. [2022-07-13 21:13:48,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 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 21:13:48,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1946 states and 2427 transitions. [2022-07-13 21:13:48,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:13:48,199 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:48,199 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] [2022-07-13 21:13:48,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 21:13:48,199 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:48,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:48,199 INFO L85 PathProgramCache]: Analyzing trace with hash -8880336, now seen corresponding path program 1 times [2022-07-13 21:13:48,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:48,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971499007] [2022-07-13 21:13:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:48,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:48,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:13:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:13:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:48,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:13:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:48,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:13:48,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:48,304 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 21:13:48,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:48,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971499007] [2022-07-13 21:13:48,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971499007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:48,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:48,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:13:48,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505171077] [2022-07-13 21:13:48,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:48,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:13:48,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:48,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:13:48,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:13:48,307 INFO L87 Difference]: Start difference. First operand 1946 states and 2427 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 21:13:50,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:50,732 INFO L93 Difference]: Finished difference Result 2972 states and 4090 transitions. [2022-07-13 21:13:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:13:50,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 179 [2022-07-13 21:13:50,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:50,737 INFO L225 Difference]: With dead ends: 2972 [2022-07-13 21:13:50,737 INFO L226 Difference]: Without dead ends: 2610 [2022-07-13 21:13:50,738 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 21:13:50,739 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 1785 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 2118 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 2282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:50,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 1947 Invalid, 2282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2118 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 21:13:50,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2022-07-13 21:13:50,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 2325. [2022-07-13 21:13:50,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2325 states, 1947 states have (on average 1.310220852593734) internal successors, (2551), 1963 states have internal predecessors, (2551), 203 states have call successors, (203), 143 states have call predecessors, (203), 173 states have return successors, (280), 219 states have call predecessors, (280), 200 states have call successors, (280) [2022-07-13 21:13:50,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 3034 transitions. [2022-07-13 21:13:50,868 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 3034 transitions. Word has length 179 [2022-07-13 21:13:50,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:50,868 INFO L495 AbstractCegarLoop]: Abstraction has 2325 states and 3034 transitions. [2022-07-13 21:13:50,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 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 21:13:50,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 3034 transitions. [2022-07-13 21:13:50,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:13:50,870 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:50,870 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] [2022-07-13 21:13:50,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 21:13:50,870 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:50,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:50,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1394620116, now seen corresponding path program 1 times [2022-07-13 21:13:50,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:50,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240400959] [2022-07-13 21:13:50,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:50,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:50,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:13:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:50,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:13:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:50,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:13:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:50,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:13:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:50,970 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 21:13:50,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:50,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240400959] [2022-07-13 21:13:50,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240400959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:50,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:50,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:50,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478521379] [2022-07-13 21:13:50,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:50,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:50,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:50,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:50,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:50,972 INFO L87 Difference]: Start difference. First operand 2325 states and 3034 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:13:54,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:54,027 INFO L93 Difference]: Finished difference Result 3893 states and 5582 transitions. [2022-07-13 21:13:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:13:54,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:13:54,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:54,041 INFO L225 Difference]: With dead ends: 3893 [2022-07-13 21:13:54,041 INFO L226 Difference]: Without dead ends: 3152 [2022-07-13 21:13:54,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:13:54,045 INFO L413 NwaCegarLoop]: 1132 mSDtfsCounter, 1817 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 3436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:54,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 3256 Invalid, 3436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:13:54,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2022-07-13 21:13:54,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 2678. [2022-07-13 21:13:54,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2272 states have (on average 1.3472711267605635) internal successors, (3061), 2289 states have internal predecessors, (3061), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-13 21:13:54,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3588 transitions. [2022-07-13 21:13:54,191 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3588 transitions. Word has length 179 [2022-07-13 21:13:54,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:54,192 INFO L495 AbstractCegarLoop]: Abstraction has 2678 states and 3588 transitions. [2022-07-13 21:13:54,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:13:54,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3588 transitions. [2022-07-13 21:13:54,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:13:54,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:54,194 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] [2022-07-13 21:13:54,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 21:13:54,194 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:54,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:54,194 INFO L85 PathProgramCache]: Analyzing trace with hash -2005889174, now seen corresponding path program 1 times [2022-07-13 21:13:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:54,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115146316] [2022-07-13 21:13:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:54,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:54,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:13:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:54,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:13:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:54,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:13:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:54,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:13:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:54,294 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 21:13:54,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:54,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115146316] [2022-07-13 21:13:54,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115146316] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:54,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:54,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:54,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104553418] [2022-07-13 21:13:54,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:54,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:54,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:54,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:54,296 INFO L87 Difference]: Start difference. First operand 2678 states and 3588 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:13:55,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:55,665 INFO L93 Difference]: Finished difference Result 4262 states and 6174 transitions. [2022-07-13 21:13:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:55,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:13:55,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:55,675 INFO L225 Difference]: With dead ends: 4262 [2022-07-13 21:13:55,676 INFO L226 Difference]: Without dead ends: 3168 [2022-07-13 21:13:55,678 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 21:13:55,679 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1564 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:55,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 1672 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 21:13:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2022-07-13 21:13:55,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 2678. [2022-07-13 21:13:55,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2272 states have (on average 1.345950704225352) internal successors, (3058), 2289 states have internal predecessors, (3058), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-13 21:13:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3585 transitions. [2022-07-13 21:13:55,830 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3585 transitions. Word has length 179 [2022-07-13 21:13:55,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:55,830 INFO L495 AbstractCegarLoop]: Abstraction has 2678 states and 3585 transitions. [2022-07-13 21:13:55,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:13:55,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3585 transitions. [2022-07-13 21:13:55,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:13:55,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:55,833 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] [2022-07-13 21:13:55,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 21:13:55,833 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:55,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:55,833 INFO L85 PathProgramCache]: Analyzing trace with hash 883886444, now seen corresponding path program 1 times [2022-07-13 21:13:55,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:55,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193371272] [2022-07-13 21:13:55,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:55,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:55,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:55,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:13:55,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:55,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:13:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:55,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:13:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:55,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:13:55,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:55,953 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 21:13:55,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:55,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193371272] [2022-07-13 21:13:55,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193371272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:55,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:55,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:55,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258353996] [2022-07-13 21:13:55,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:55,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:55,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:55,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:55,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:55,955 INFO L87 Difference]: Start difference. First operand 2678 states and 3585 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:13:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:13:57,499 INFO L93 Difference]: Finished difference Result 4258 states and 6157 transitions. [2022-07-13 21:13:57,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:13:57,500 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:13:57,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:13:57,506 INFO L225 Difference]: With dead ends: 4258 [2022-07-13 21:13:57,506 INFO L226 Difference]: Without dead ends: 3164 [2022-07-13 21:13:57,509 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 21:13:57,510 INFO L413 NwaCegarLoop]: 762 mSDtfsCounter, 1343 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1606 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 21:13:57,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1918 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1606 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 21:13:57,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2022-07-13 21:13:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2678. [2022-07-13 21:13:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2272 states have (on average 1.3446302816901408) internal successors, (3055), 2289 states have internal predecessors, (3055), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-13 21:13:57,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3582 transitions. [2022-07-13 21:13:57,668 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3582 transitions. Word has length 179 [2022-07-13 21:13:57,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:13:57,669 INFO L495 AbstractCegarLoop]: Abstraction has 2678 states and 3582 transitions. [2022-07-13 21:13:57,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:13:57,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3582 transitions. [2022-07-13 21:13:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:13:57,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:13:57,671 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] [2022-07-13 21:13:57,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 21:13:57,671 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:13:57,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:13:57,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1516746966, now seen corresponding path program 1 times [2022-07-13 21:13:57,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:13:57,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918246406] [2022-07-13 21:13:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:13:57,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:13:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:57,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:13:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:57,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:13:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:57,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:13:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:57,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:13:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:57,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:13:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:13:57,813 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 21:13:57,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:13:57,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918246406] [2022-07-13 21:13:57,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918246406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:13:57,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:13:57,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:13:57,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909808237] [2022-07-13 21:13:57,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:13:57,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:13:57,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:13:57,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:13:57,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:13:57,815 INFO L87 Difference]: Start difference. First operand 2678 states and 3582 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:00,195 INFO L93 Difference]: Finished difference Result 5241 states and 7712 transitions. [2022-07-13 21:14:00,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:14:00,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:14:00,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:00,219 INFO L225 Difference]: With dead ends: 5241 [2022-07-13 21:14:00,229 INFO L226 Difference]: Without dead ends: 4147 [2022-07-13 21:14:00,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:14:00,233 INFO L413 NwaCegarLoop]: 1113 mSDtfsCounter, 1798 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 3261 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1827 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:00,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1827 Valid, 3237 Invalid, 3386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3261 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-13 21:14:00,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4147 states. [2022-07-13 21:14:00,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4147 to 3393. [2022-07-13 21:14:00,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 2931 states have (on average 1.39338109860116) internal successors, (4084), 2950 states have internal predecessors, (4084), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-07-13 21:14:00,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4703 transitions. [2022-07-13 21:14:00,442 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4703 transitions. Word has length 179 [2022-07-13 21:14:00,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:00,443 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 4703 transitions. [2022-07-13 21:14:00,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:00,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4703 transitions. [2022-07-13 21:14:00,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:14:00,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:00,450 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] [2022-07-13 21:14:00,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 21:14:00,451 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:00,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:00,451 INFO L85 PathProgramCache]: Analyzing trace with hash -70166100, now seen corresponding path program 1 times [2022-07-13 21:14:00,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:00,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299419078] [2022-07-13 21:14:00,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:00,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:00,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:14:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:00,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:14:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:00,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:14:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:00,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:14:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:00,553 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 21:14:00,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:00,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299419078] [2022-07-13 21:14:00,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299419078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:00,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:00,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:00,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380610883] [2022-07-13 21:14:00,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:00,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:00,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:00,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:00,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:00,555 INFO L87 Difference]: Start difference. First operand 3393 states and 4703 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:02,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:02,153 INFO L93 Difference]: Finished difference Result 5942 states and 8820 transitions. [2022-07-13 21:14:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:02,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:14:02,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:02,161 INFO L225 Difference]: With dead ends: 5942 [2022-07-13 21:14:02,162 INFO L226 Difference]: Without dead ends: 4133 [2022-07-13 21:14:02,164 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 21:14:02,165 INFO L413 NwaCegarLoop]: 755 mSDtfsCounter, 1342 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:02,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 1911 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:14:02,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2022-07-13 21:14:02,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 3393. [2022-07-13 21:14:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 2931 states have (on average 1.3916751961787786) internal successors, (4079), 2950 states have internal predecessors, (4079), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-07-13 21:14:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 4698 transitions. [2022-07-13 21:14:02,386 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 4698 transitions. Word has length 179 [2022-07-13 21:14:02,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:02,386 INFO L495 AbstractCegarLoop]: Abstraction has 3393 states and 4698 transitions. [2022-07-13 21:14:02,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 4698 transitions. [2022-07-13 21:14:02,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:14:02,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:02,388 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] [2022-07-13 21:14:02,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 21:14:02,389 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:02,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash -993333526, now seen corresponding path program 1 times [2022-07-13 21:14:02,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:02,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678041279] [2022-07-13 21:14:02,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:02,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:14:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:14:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:14:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:14:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:02,508 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 21:14:02,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:02,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678041279] [2022-07-13 21:14:02,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678041279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:02,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:02,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:02,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512881548] [2022-07-13 21:14:02,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:02,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:02,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:02,510 INFO L87 Difference]: Start difference. First operand 3393 states and 4698 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:05,256 INFO L93 Difference]: Finished difference Result 7852 states and 11825 transitions. [2022-07-13 21:14:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:14:05,257 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:14:05,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:05,271 INFO L225 Difference]: With dead ends: 7852 [2022-07-13 21:14:05,272 INFO L226 Difference]: Without dead ends: 6043 [2022-07-13 21:14:05,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:14:05,278 INFO L413 NwaCegarLoop]: 1102 mSDtfsCounter, 1790 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1819 SdHoareTripleChecker+Valid, 3226 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:05,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1819 Valid, 3226 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 21:14:05,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6043 states. [2022-07-13 21:14:05,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6043 to 4827. [2022-07-13 21:14:05,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4253 states have (on average 1.4425111685868799) internal successors, (6135), 4276 states have internal predecessors, (6135), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-13 21:14:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6944 transitions. [2022-07-13 21:14:05,636 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6944 transitions. Word has length 179 [2022-07-13 21:14:05,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:05,637 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 6944 transitions. [2022-07-13 21:14:05,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:05,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6944 transitions. [2022-07-13 21:14:05,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:14:05,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:05,639 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] [2022-07-13 21:14:05,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 21:14:05,640 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:05,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:05,641 INFO L85 PathProgramCache]: Analyzing trace with hash -607471124, now seen corresponding path program 1 times [2022-07-13 21:14:05,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:05,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123069106] [2022-07-13 21:14:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:05,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:14:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:05,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:14:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:05,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:14:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:05,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:14:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:05,747 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 21:14:05,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:05,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123069106] [2022-07-13 21:14:05,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123069106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:05,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:05,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:05,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461267262] [2022-07-13 21:14:05,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:05,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:05,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:05,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:05,750 INFO L87 Difference]: Start difference. First operand 4827 states and 6944 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:07,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:07,481 INFO L93 Difference]: Finished difference Result 9306 states and 14139 transitions. [2022-07-13 21:14:07,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:07,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:14:07,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:07,493 INFO L225 Difference]: With dead ends: 9306 [2022-07-13 21:14:07,493 INFO L226 Difference]: Without dead ends: 6063 [2022-07-13 21:14:07,500 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 21:14:07,500 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1563 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:07,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 1652 Invalid, 1564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 21:14:07,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6063 states. [2022-07-13 21:14:07,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6063 to 4827. [2022-07-13 21:14:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4253 states have (on average 1.4403950152833294) internal successors, (6126), 4276 states have internal predecessors, (6126), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-13 21:14:07,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6935 transitions. [2022-07-13 21:14:07,835 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6935 transitions. Word has length 179 [2022-07-13 21:14:07,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:07,835 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 6935 transitions. [2022-07-13 21:14:07,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:07,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6935 transitions. [2022-07-13 21:14:07,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:14:07,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:07,838 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] [2022-07-13 21:14:07,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 21:14:07,838 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:07,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash -872118614, now seen corresponding path program 1 times [2022-07-13 21:14:07,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:07,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583987533] [2022-07-13 21:14:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:07,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:14:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:14:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:14:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:14:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:07,937 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 21:14:07,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:07,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583987533] [2022-07-13 21:14:07,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583987533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:07,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:07,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:07,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030711941] [2022-07-13 21:14:07,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:07,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:07,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:07,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:07,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:07,939 INFO L87 Difference]: Start difference. First operand 4827 states and 6935 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:09,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:09,959 INFO L93 Difference]: Finished difference Result 9286 states and 14072 transitions. [2022-07-13 21:14:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:09,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:14:09,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:09,972 INFO L225 Difference]: With dead ends: 9286 [2022-07-13 21:14:09,973 INFO L226 Difference]: Without dead ends: 6043 [2022-07-13 21:14:09,979 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 21:14:09,980 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 1340 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:09,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 1896 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:14:09,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6043 states. [2022-07-13 21:14:10,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6043 to 4827. [2022-07-13 21:14:10,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4253 states have (on average 1.438278861979779) internal successors, (6117), 4276 states have internal predecessors, (6117), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-13 21:14:10,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6926 transitions. [2022-07-13 21:14:10,394 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6926 transitions. Word has length 179 [2022-07-13 21:14:10,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:10,394 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 6926 transitions. [2022-07-13 21:14:10,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:10,394 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6926 transitions. [2022-07-13 21:14:10,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:14:10,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:10,397 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] [2022-07-13 21:14:10,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 21:14:10,397 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:10,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2099669736, now seen corresponding path program 1 times [2022-07-13 21:14:10,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:10,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126696593] [2022-07-13 21:14:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:10,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:10,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:10,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:14:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:14:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:10,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:14:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:10,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:14:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:10,509 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 21:14:10,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:10,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126696593] [2022-07-13 21:14:10,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126696593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:10,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:10,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:10,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563174266] [2022-07-13 21:14:10,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:10,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:10,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:10,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:10,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:10,510 INFO L87 Difference]: Start difference. First operand 4827 states and 6926 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:12,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:12,073 INFO L93 Difference]: Finished difference Result 9276 states and 14025 transitions. [2022-07-13 21:14:12,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:12,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:14:12,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:12,093 INFO L225 Difference]: With dead ends: 9276 [2022-07-13 21:14:12,093 INFO L226 Difference]: Without dead ends: 6033 [2022-07-13 21:14:12,098 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 21:14:12,099 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 1557 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:12,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 1642 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 21:14:12,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6033 states. [2022-07-13 21:14:12,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6033 to 4827. [2022-07-13 21:14:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4827 states, 4253 states have (on average 1.4361627086762285) internal successors, (6108), 4276 states have internal predecessors, (6108), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-13 21:14:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4827 states to 4827 states and 6917 transitions. [2022-07-13 21:14:12,469 INFO L78 Accepts]: Start accepts. Automaton has 4827 states and 6917 transitions. Word has length 179 [2022-07-13 21:14:12,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:12,469 INFO L495 AbstractCegarLoop]: Abstraction has 4827 states and 6917 transitions. [2022-07-13 21:14:12,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:12,469 INFO L276 IsEmpty]: Start isEmpty. Operand 4827 states and 6917 transitions. [2022-07-13 21:14:12,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:14:12,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:12,472 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] [2022-07-13 21:14:12,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 21:14:12,472 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:12,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:12,473 INFO L85 PathProgramCache]: Analyzing trace with hash -298318102, now seen corresponding path program 1 times [2022-07-13 21:14:12,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:12,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157091308] [2022-07-13 21:14:12,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:12,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:12,493 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 22 [2022-07-13 21:14:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:14:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:14:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:14:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:12,563 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 21:14:12,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:12,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157091308] [2022-07-13 21:14:12,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157091308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:12,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:12,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:12,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621204049] [2022-07-13 21:14:12,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:12,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:12,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:12,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:12,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:12,565 INFO L87 Difference]: Start difference. First operand 4827 states and 6917 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:16,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:16,028 INFO L93 Difference]: Finished difference Result 13044 states and 19901 transitions. [2022-07-13 21:14:16,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 21:14:16,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:14:16,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:16,050 INFO L225 Difference]: With dead ends: 13044 [2022-07-13 21:14:16,050 INFO L226 Difference]: Without dead ends: 9801 [2022-07-13 21:14:16,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:14:16,058 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 1767 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 3156 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 3284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 3156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:16,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 3197 Invalid, 3284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 3156 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 21:14:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2022-07-13 21:14:16,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 7736. [2022-07-13 21:14:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7736 states, 6938 states have (on average 1.4773710002882676) internal successors, (10250), 6969 states have internal predecessors, (10250), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-07-13 21:14:16,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7736 states to 7736 states and 11457 transitions. [2022-07-13 21:14:16,736 INFO L78 Accepts]: Start accepts. Automaton has 7736 states and 11457 transitions. Word has length 179 [2022-07-13 21:14:16,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:16,736 INFO L495 AbstractCegarLoop]: Abstraction has 7736 states and 11457 transitions. [2022-07-13 21:14:16,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:16,736 INFO L276 IsEmpty]: Start isEmpty. Operand 7736 states and 11457 transitions. [2022-07-13 21:14:16,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:14:16,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:16,739 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] [2022-07-13 21:14:16,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-13 21:14:16,740 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:16,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:16,740 INFO L85 PathProgramCache]: Analyzing trace with hash 39969448, now seen corresponding path program 1 times [2022-07-13 21:14:16,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:16,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787421925] [2022-07-13 21:14:16,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:16,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:14:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:14:16,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:14:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:14:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:16,835 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 21:14:16,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:16,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787421925] [2022-07-13 21:14:16,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787421925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:16,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:16,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:16,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285480329] [2022-07-13 21:14:16,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:16,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:16,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:16,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:16,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:16,837 INFO L87 Difference]: Start difference. First operand 7736 states and 11457 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:19,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:19,306 INFO L93 Difference]: Finished difference Result 16010 states and 24628 transitions. [2022-07-13 21:14:19,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:14:19,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:14:19,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:19,320 INFO L225 Difference]: With dead ends: 16010 [2022-07-13 21:14:19,321 INFO L226 Difference]: Without dead ends: 9858 [2022-07-13 21:14:19,327 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 21:14:19,328 INFO L413 NwaCegarLoop]: 729 mSDtfsCounter, 1335 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:19,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1365 Valid, 1883 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 21:14:19,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9858 states. [2022-07-13 21:14:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9858 to 7736. [2022-07-13 21:14:19,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7736 states, 6938 states have (on average 1.4749207264341309) internal successors, (10233), 6969 states have internal predecessors, (10233), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-07-13 21:14:19,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7736 states to 7736 states and 11440 transitions. [2022-07-13 21:14:19,978 INFO L78 Accepts]: Start accepts. Automaton has 7736 states and 11440 transitions. Word has length 179 [2022-07-13 21:14:19,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:19,979 INFO L495 AbstractCegarLoop]: Abstraction has 7736 states and 11440 transitions. [2022-07-13 21:14:19,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:19,979 INFO L276 IsEmpty]: Start isEmpty. Operand 7736 states and 11440 transitions. [2022-07-13 21:14:19,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:14:19,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:19,982 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] [2022-07-13 21:14:19,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 21:14:19,982 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:19,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:19,983 INFO L85 PathProgramCache]: Analyzing trace with hash 466523946, now seen corresponding path program 1 times [2022-07-13 21:14:19,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:19,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540633804] [2022-07-13 21:14:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:19,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:20,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:20,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:14:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:20,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:14:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:20,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:14:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:20,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:14:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:20,083 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 21:14:20,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:20,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540633804] [2022-07-13 21:14:20,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540633804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:20,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:20,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:20,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027010093] [2022-07-13 21:14:20,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:20,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:20,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:20,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:20,085 INFO L87 Difference]: Start difference. First operand 7736 states and 11440 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:25,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:25,613 INFO L93 Difference]: Finished difference Result 26133 states and 40361 transitions. [2022-07-13 21:14:25,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:14:25,613 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:14:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:25,653 INFO L225 Difference]: With dead ends: 26133 [2022-07-13 21:14:25,653 INFO L226 Difference]: Without dead ends: 19981 [2022-07-13 21:14:25,667 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 21:14:25,667 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 2205 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 3121 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2247 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 3254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:25,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2247 Valid, 3172 Invalid, 3254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3121 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:14:25,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19981 states. [2022-07-13 21:14:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19981 to 13402. [2022-07-13 21:14:27,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13402 states, 12172 states have (on average 1.5009037134406835) internal successors, (18269), 12219 states have internal predecessors, (18269), 838 states have call successors, (838), 329 states have call predecessors, (838), 390 states have return successors, (1187), 885 states have call predecessors, (1187), 835 states have call successors, (1187) [2022-07-13 21:14:27,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13402 states to 13402 states and 20294 transitions. [2022-07-13 21:14:27,082 INFO L78 Accepts]: Start accepts. Automaton has 13402 states and 20294 transitions. Word has length 179 [2022-07-13 21:14:27,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:27,082 INFO L495 AbstractCegarLoop]: Abstraction has 13402 states and 20294 transitions. [2022-07-13 21:14:27,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:27,082 INFO L276 IsEmpty]: Start isEmpty. Operand 13402 states and 20294 transitions. [2022-07-13 21:14:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:14:27,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:27,087 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] [2022-07-13 21:14:27,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 21:14:27,088 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:27,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash -73905560, now seen corresponding path program 1 times [2022-07-13 21:14:27,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:27,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670245268] [2022-07-13 21:14:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:27,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:27,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:27,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:14:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:27,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:14:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:27,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:14:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:27,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:14:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:27,186 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 21:14:27,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:27,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670245268] [2022-07-13 21:14:27,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670245268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:27,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:27,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:27,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923253190] [2022-07-13 21:14:27,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:27,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:27,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:27,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:27,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:27,188 INFO L87 Difference]: Start difference. First operand 13402 states and 20294 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:35,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:35,743 INFO L93 Difference]: Finished difference Result 48757 states and 75985 transitions. [2022-07-13 21:14:35,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:14:35,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:14:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:35,839 INFO L225 Difference]: With dead ends: 48757 [2022-07-13 21:14:35,840 INFO L226 Difference]: Without dead ends: 36939 [2022-07-13 21:14:35,869 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 21:14:35,869 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 1861 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 3758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:35,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 3343 Invalid, 3758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 21:14:35,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36939 states. [2022-07-13 21:14:38,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36939 to 24843. [2022-07-13 21:14:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24843 states, 22765 states have (on average 1.518778827146936) internal successors, (34575), 22844 states have internal predecessors, (34575), 1462 states have call successors, (1462), 521 states have call predecessors, (1462), 614 states have return successors, (2329), 1541 states have call predecessors, (2329), 1459 states have call successors, (2329) [2022-07-13 21:14:38,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24843 states to 24843 states and 38366 transitions. [2022-07-13 21:14:38,753 INFO L78 Accepts]: Start accepts. Automaton has 24843 states and 38366 transitions. Word has length 179 [2022-07-13 21:14:38,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:38,753 INFO L495 AbstractCegarLoop]: Abstraction has 24843 states and 38366 transitions. [2022-07-13 21:14:38,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:38,753 INFO L276 IsEmpty]: Start isEmpty. Operand 24843 states and 38366 transitions. [2022-07-13 21:14:38,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:14:38,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:38,762 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] [2022-07-13 21:14:38,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-13 21:14:38,763 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:38,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:38,763 INFO L85 PathProgramCache]: Analyzing trace with hash -229886102, now seen corresponding path program 1 times [2022-07-13 21:14:38,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:38,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103712643] [2022-07-13 21:14:38,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:38,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:38,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:14:38,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:38,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:14:38,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:38,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:14:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:38,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:14:38,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:38,905 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 21:14:38,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:38,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103712643] [2022-07-13 21:14:38,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103712643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:38,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:38,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:38,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349990965] [2022-07-13 21:14:38,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:38,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:38,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:38,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:38,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:38,906 INFO L87 Difference]: Start difference. First operand 24843 states and 38366 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:52,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:14:52,992 INFO L93 Difference]: Finished difference Result 93764 states and 147575 transitions. [2022-07-13 21:14:52,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:14:52,992 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:14:52,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:14:53,195 INFO L225 Difference]: With dead ends: 93764 [2022-07-13 21:14:53,195 INFO L226 Difference]: Without dead ends: 70505 [2022-07-13 21:14:53,264 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 21:14:53,266 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 2129 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 3103 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2171 SdHoareTripleChecker+Valid, 3164 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 3103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:14:53,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2171 Valid, 3164 Invalid, 3239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 3103 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:14:53,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70505 states. [2022-07-13 21:14:58,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70505 to 47692. [2022-07-13 21:14:58,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47692 states, 43950 states have (on average 1.5293970420932879) internal successors, (67217), 44093 states have internal predecessors, (67217), 2678 states have call successors, (2678), 905 states have call predecessors, (2678), 1062 states have return successors, (5067), 2821 states have call predecessors, (5067), 2675 states have call successors, (5067) [2022-07-13 21:14:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47692 states to 47692 states and 74962 transitions. [2022-07-13 21:14:58,781 INFO L78 Accepts]: Start accepts. Automaton has 47692 states and 74962 transitions. Word has length 179 [2022-07-13 21:14:58,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:14:58,781 INFO L495 AbstractCegarLoop]: Abstraction has 47692 states and 74962 transitions. [2022-07-13 21:14:58,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:14:58,781 INFO L276 IsEmpty]: Start isEmpty. Operand 47692 states and 74962 transitions. [2022-07-13 21:14:58,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:14:58,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:14:58,798 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] [2022-07-13 21:14:58,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-13 21:14:58,799 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:14:58,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:14:58,799 INFO L85 PathProgramCache]: Analyzing trace with hash 180724264, now seen corresponding path program 1 times [2022-07-13 21:14:58,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:14:58,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137586100] [2022-07-13 21:14:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:14:58,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:14:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:58,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:14:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:58,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:14:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:58,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:14:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:58,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:14:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:58,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:14:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:14:58,917 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 21:14:58,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:14:58,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137586100] [2022-07-13 21:14:58,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137586100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:14:58,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:14:58,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:14:58,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82369444] [2022-07-13 21:14:58,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:14:58,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:14:58,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:14:58,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:14:58,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:14:58,920 INFO L87 Difference]: Start difference. First operand 47692 states and 74962 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:15:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:15:24,451 INFO L93 Difference]: Finished difference Result 180673 states and 287993 transitions. [2022-07-13 21:15:24,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:15:24,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:15:24,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:15:24,881 INFO L225 Difference]: With dead ends: 180673 [2022-07-13 21:15:24,881 INFO L226 Difference]: Without dead ends: 134565 [2022-07-13 21:15:25,035 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 21:15:25,037 INFO L413 NwaCegarLoop]: 1163 mSDtfsCounter, 1828 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 3494 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1856 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 21:15:25,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1856 Valid, 3279 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3494 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 21:15:25,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134565 states. [2022-07-13 21:15:36,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134565 to 93454. [2022-07-13 21:15:36,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93454 states, 86448 states have (on average 1.5364265223024245) internal successors, (132821), 86719 states have internal predecessors, (132821), 5046 states have call successors, (5046), 1673 states have call predecessors, (5046), 1958 states have return successors, (11937), 5317 states have call predecessors, (11937), 5043 states have call successors, (11937) [2022-07-13 21:15:36,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93454 states to 93454 states and 149804 transitions. [2022-07-13 21:15:36,815 INFO L78 Accepts]: Start accepts. Automaton has 93454 states and 149804 transitions. Word has length 179 [2022-07-13 21:15:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:15:36,816 INFO L495 AbstractCegarLoop]: Abstraction has 93454 states and 149804 transitions. [2022-07-13 21:15:36,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:15:36,816 INFO L276 IsEmpty]: Start isEmpty. Operand 93454 states and 149804 transitions. [2022-07-13 21:15:36,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-13 21:15:36,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:15:36,850 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] [2022-07-13 21:15:36,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-13 21:15:36,851 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:15:36,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:15:36,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1955158938, now seen corresponding path program 1 times [2022-07-13 21:15:36,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:15:36,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542523399] [2022-07-13 21:15:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:15:36,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:15:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 21:15:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 21:15:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 21:15:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 21:15:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 21:15:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:15:36,967 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 21:15:36,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:15:36,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542523399] [2022-07-13 21:15:36,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542523399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:15:36,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:15:36,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 21:15:36,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761891001] [2022-07-13 21:15:36,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:15:36,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 21:15:36,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:15:36,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 21:15:36,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:15:36,970 INFO L87 Difference]: Start difference. First operand 93454 states and 149804 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 21:16:26,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:16:26,457 INFO L93 Difference]: Finished difference Result 354177 states and 573969 transitions. [2022-07-13 21:16:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 21:16:26,458 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 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 179 [2022-07-13 21:16:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:16:27,390 INFO L225 Difference]: With dead ends: 354177 [2022-07-13 21:16:27,391 INFO L226 Difference]: Without dead ends: 262307 [2022-07-13 21:16:27,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:16:27,645 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 2006 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 3077 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 3213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 3077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 21:16:27,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2048 Valid, 3150 Invalid, 3213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 3077 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 21:16:27,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262307 states.