./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.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 0515a0092ae60bee69c0826328a56fce70547e074096ceb561e2dff3da2ff25f --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 16:20:25,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 16:20:25,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 16:20:25,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 16:20:25,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 16:20:25,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 16:20:25,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 16:20:25,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 16:20:25,978 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 16:20:25,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 16:20:25,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 16:20:25,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 16:20:25,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 16:20:25,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 16:20:25,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 16:20:25,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 16:20:25,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 16:20:25,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 16:20:25,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 16:20:25,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 16:20:25,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 16:20:25,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 16:20:25,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 16:20:25,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 16:20:25,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 16:20:25,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 16:20:25,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 16:20:25,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 16:20:25,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 16:20:25,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 16:20:25,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 16:20:25,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 16:20:25,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 16:20:25,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 16:20:25,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 16:20:25,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 16:20:25,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 16:20:25,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 16:20:25,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 16:20:25,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 16:20:25,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 16:20:26,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 16:20:26,018 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 16:20:26,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 16:20:26,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 16:20:26,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 16:20:26,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 16:20:26,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 16:20:26,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 16:20:26,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 16:20:26,021 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 16:20:26,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 16:20:26,021 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 16:20:26,021 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 16:20:26,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 16:20:26,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 16:20:26,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 16:20:26,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 16:20:26,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 16:20:26,022 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 16:20:26,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 16:20:26,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 16:20:26,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 16:20:26,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 16:20:26,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 16:20:26,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 16:20:26,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:20:26,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 16:20:26,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 16:20:26,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 16:20:26,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 16:20:26,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 16:20:26,024 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 16:20:26,024 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 16:20:26,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 16:20:26,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 16:20:26,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0515a0092ae60bee69c0826328a56fce70547e074096ceb561e2dff3da2ff25f [2021-12-14 16:20:26,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 16:20:26,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 16:20:26,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 16:20:26,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 16:20:26,276 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 16:20:26,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c [2021-12-14 16:20:26,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/503dc8e98/6b4e9253e4234d7bafa0e64a7ffa26ba/FLAG3586b415b [2021-12-14 16:20:26,700 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 16:20:26,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c [2021-12-14 16:20:26,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/503dc8e98/6b4e9253e4234d7bafa0e64a7ffa26ba/FLAG3586b415b [2021-12-14 16:20:26,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/503dc8e98/6b4e9253e4234d7bafa0e64a7ffa26ba [2021-12-14 16:20:26,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 16:20:26,719 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 16:20:26,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 16:20:26,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 16:20:26,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 16:20:26,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:20:26" (1/1) ... [2021-12-14 16:20:26,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3565cf59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:26, skipping insertion in model container [2021-12-14 16:20:26,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:20:26" (1/1) ... [2021-12-14 16:20:26,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 16:20:26,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 16:20:26,888 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c[911,924] [2021-12-14 16:20:26,951 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c[8416,8429] [2021-12-14 16:20:27,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:20:27,007 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 16:20:27,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c[911,924] [2021-12-14 16:20:27,048 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.06.cil-2.c[8416,8429] [2021-12-14 16:20:27,084 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 16:20:27,107 INFO L208 MainTranslator]: Completed translation [2021-12-14 16:20:27,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:27 WrapperNode [2021-12-14 16:20:27,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 16:20:27,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 16:20:27,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 16:20:27,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 16:20:27,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:27" (1/1) ... [2021-12-14 16:20:27,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:27" (1/1) ... [2021-12-14 16:20:27,174 INFO L137 Inliner]: procedures = 67, calls = 79, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 730 [2021-12-14 16:20:27,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 16:20:27,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 16:20:27,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 16:20:27,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 16:20:27,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:27" (1/1) ... [2021-12-14 16:20:27,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:27" (1/1) ... [2021-12-14 16:20:27,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:27" (1/1) ... [2021-12-14 16:20:27,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:27" (1/1) ... [2021-12-14 16:20:27,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:27" (1/1) ... [2021-12-14 16:20:27,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:27" (1/1) ... [2021-12-14 16:20:27,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:27" (1/1) ... [2021-12-14 16:20:27,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 16:20:27,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 16:20:27,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 16:20:27,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 16:20:27,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:27" (1/1) ... [2021-12-14 16:20:27,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 16:20:27,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 16:20:27,281 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) [2021-12-14 16:20:27,302 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 [2021-12-14 16:20:27,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 16:20:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-14 16:20:27,307 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-14 16:20:27,307 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-14 16:20:27,308 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-14 16:20:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-14 16:20:27,308 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-14 16:20:27,308 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-14 16:20:27,308 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-14 16:20:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-14 16:20:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-14 16:20:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-14 16:20:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-14 16:20:27,309 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-14 16:20:27,309 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-14 16:20:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-14 16:20:27,310 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-14 16:20:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-14 16:20:27,310 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-14 16:20:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-14 16:20:27,310 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-14 16:20:27,310 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-14 16:20:27,310 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-14 16:20:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 16:20:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-14 16:20:27,311 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-14 16:20:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-14 16:20:27,311 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-14 16:20:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 16:20:27,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 16:20:27,311 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-14 16:20:27,312 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-14 16:20:27,431 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 16:20:27,432 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 16:20:27,957 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2021-12-14 16:20:27,958 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2021-12-14 16:20:27,998 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 16:20:28,005 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 16:20:28,005 INFO L301 CfgBuilder]: Removed 13 assume(true) statements. [2021-12-14 16:20:28,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:20:28 BoogieIcfgContainer [2021-12-14 16:20:28,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 16:20:28,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 16:20:28,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 16:20:28,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 16:20:28,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 04:20:26" (1/3) ... [2021-12-14 16:20:28,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7378b369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:20:28, skipping insertion in model container [2021-12-14 16:20:28,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:20:27" (2/3) ... [2021-12-14 16:20:28,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7378b369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 04:20:28, skipping insertion in model container [2021-12-14 16:20:28,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:20:28" (3/3) ... [2021-12-14 16:20:28,013 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.06.cil-2.c [2021-12-14 16:20:28,017 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 16:20:28,017 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-14 16:20:28,048 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 16:20:28,052 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 16:20:28,052 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-14 16:20:28,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 349 states, 296 states have (on average 1.6047297297297298) internal successors, (475), 302 states have internal predecessors, (475), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) [2021-12-14 16:20:28,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 16:20:28,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:28,074 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:28,075 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:28,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1893731304, now seen corresponding path program 1 times [2021-12-14 16:20:28,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:28,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418933500] [2021-12-14 16:20:28,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:28,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:28,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:20:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:20:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:28,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:20:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:28,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:20:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:20:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:28,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:20:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:28,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:28,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:28,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418933500] [2021-12-14 16:20:28,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418933500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:28,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:28,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:20:28,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449306766] [2021-12-14 16:20:28,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:28,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:20:28,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:28,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:20:28,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:20:28,456 INFO L87 Difference]: Start difference. First operand has 349 states, 296 states have (on average 1.6047297297297298) internal successors, (475), 302 states have internal predecessors, (475), 36 states have call successors, (36), 14 states have call predecessors, (36), 14 states have return successors, (36), 35 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-14 16:20:29,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:29,253 INFO L93 Difference]: Finished difference Result 827 states and 1293 transitions. [2021-12-14 16:20:29,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:20:29,256 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 [2021-12-14 16:20:29,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:29,266 INFO L225 Difference]: With dead ends: 827 [2021-12-14 16:20:29,266 INFO L226 Difference]: Without dead ends: 490 [2021-12-14 16:20:29,270 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:20:29,273 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 921 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:29,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 1777 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 16:20:29,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-12-14 16:20:29,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 451. [2021-12-14 16:20:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 378 states have (on average 1.492063492063492) internal successors, (564), 384 states have internal predecessors, (564), 49 states have call successors, (49), 21 states have call predecessors, (49), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2021-12-14 16:20:29,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 665 transitions. [2021-12-14 16:20:29,332 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 665 transitions. Word has length 65 [2021-12-14 16:20:29,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:29,333 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 665 transitions. [2021-12-14 16:20:29,333 INFO L471 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) [2021-12-14 16:20:29,333 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 665 transitions. [2021-12-14 16:20:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 16:20:29,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:29,337 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:29,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 16:20:29,338 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:29,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:29,338 INFO L85 PathProgramCache]: Analyzing trace with hash -214842664, now seen corresponding path program 1 times [2021-12-14 16:20:29,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:29,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084097665] [2021-12-14 16:20:29,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:29,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:29,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:20:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:29,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:20:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:20:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:20:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:20:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:20:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:29,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:29,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084097665] [2021-12-14 16:20:29,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084097665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:29,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:29,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:20:29,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616970839] [2021-12-14 16:20:29,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:29,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:20:29,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:29,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:20:29,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:20:29,489 INFO L87 Difference]: Start difference. First operand 451 states and 665 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) [2021-12-14 16:20:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:30,274 INFO L93 Difference]: Finished difference Result 848 states and 1231 transitions. [2021-12-14 16:20:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 16:20:30,274 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 [2021-12-14 16:20:30,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:30,278 INFO L225 Difference]: With dead ends: 848 [2021-12-14 16:20:30,278 INFO L226 Difference]: Without dead ends: 639 [2021-12-14 16:20:30,279 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:20:30,280 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 1235 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:30,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1262 Valid, 1858 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 16:20:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-12-14 16:20:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2021-12-14 16:20:30,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 468 states have (on average 1.4743589743589745) internal successors, (690), 476 states have internal predecessors, (690), 62 states have call successors, (62), 28 states have call predecessors, (62), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2021-12-14 16:20:30,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 825 transitions. [2021-12-14 16:20:30,319 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 825 transitions. Word has length 65 [2021-12-14 16:20:30,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:30,320 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 825 transitions. [2021-12-14 16:20:30,320 INFO L471 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) [2021-12-14 16:20:30,320 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 825 transitions. [2021-12-14 16:20:30,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 16:20:30,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:30,328 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:30,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 16:20:30,329 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:30,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:30,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2051538522, now seen corresponding path program 1 times [2021-12-14 16:20:30,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:30,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141973735] [2021-12-14 16:20:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:30,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:30,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:30,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:20:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:30,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:20:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:30,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:20:30,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:30,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 16:20:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:30,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-14 16:20:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:30,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 16:20:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:30,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:30,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141973735] [2021-12-14 16:20:30,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141973735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:30,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:30,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 16:20:30,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285872265] [2021-12-14 16:20:30,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:30,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 16:20:30,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:30,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 16:20:30,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-14 16:20:30,493 INFO L87 Difference]: Start difference. First operand 563 states and 825 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-14 16:20:31,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:31,929 INFO L93 Difference]: Finished difference Result 2109 states and 3023 transitions. [2021-12-14 16:20:31,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-14 16:20:31,930 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2021-12-14 16:20:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:31,953 INFO L225 Difference]: With dead ends: 2109 [2021-12-14 16:20:31,954 INFO L226 Difference]: Without dead ends: 1776 [2021-12-14 16:20:31,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-12-14 16:20:31,961 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 2796 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2814 SdHoareTripleChecker+Valid, 2476 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:31,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2814 Valid, 2476 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 16:20:31,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1776 states. [2021-12-14 16:20:32,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1776 to 1616. [2021-12-14 16:20:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1316 states have (on average 1.3936170212765957) internal successors, (1834), 1339 states have internal predecessors, (1834), 172 states have call successors, (172), 111 states have call predecessors, (172), 126 states have return successors, (206), 168 states have call predecessors, (206), 170 states have call successors, (206) [2021-12-14 16:20:32,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2212 transitions. [2021-12-14 16:20:32,034 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2212 transitions. Word has length 65 [2021-12-14 16:20:32,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:32,034 INFO L470 AbstractCegarLoop]: Abstraction has 1616 states and 2212 transitions. [2021-12-14 16:20:32,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-14 16:20:32,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2212 transitions. [2021-12-14 16:20:32,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 16:20:32,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:32,035 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:32,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 16:20:32,036 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:32,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:32,036 INFO L85 PathProgramCache]: Analyzing trace with hash 209581264, now seen corresponding path program 1 times [2021-12-14 16:20:32,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:32,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78929350] [2021-12-14 16:20:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:32,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:32,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:20:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:20:32,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:32,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:20:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:32,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 16:20:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:32,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-14 16:20:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:32,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 16:20:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:32,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:32,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78929350] [2021-12-14 16:20:32,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78929350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:32,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:32,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 16:20:32,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952019340] [2021-12-14 16:20:32,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:32,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 16:20:32,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:32,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 16:20:32,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-14 16:20:32,114 INFO L87 Difference]: Start difference. First operand 1616 states and 2212 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-14 16:20:33,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:33,625 INFO L93 Difference]: Finished difference Result 5140 states and 7094 transitions. [2021-12-14 16:20:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-14 16:20:33,626 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2021-12-14 16:20:33,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:33,633 INFO L225 Difference]: With dead ends: 5140 [2021-12-14 16:20:33,633 INFO L226 Difference]: Without dead ends: 2021 [2021-12-14 16:20:33,639 INFO L932 BasicCegarLoop]: 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 [2021-12-14 16:20:33,639 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 2839 mSDsluCounter, 1884 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 635 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2857 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 2288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 635 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:33,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2857 Valid, 2524 Invalid, 2288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [635 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-14 16:20:33,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-12-14 16:20:33,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1817. [2021-12-14 16:20:33,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1447 states have (on average 1.3503800967519004) internal successors, (1954), 1472 states have internal predecessors, (1954), 212 states have call successors, (212), 139 states have call predecessors, (212), 156 states have return successors, (250), 208 states have call predecessors, (250), 210 states have call successors, (250) [2021-12-14 16:20:33,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2416 transitions. [2021-12-14 16:20:33,710 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2416 transitions. Word has length 66 [2021-12-14 16:20:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:33,710 INFO L470 AbstractCegarLoop]: Abstraction has 1817 states and 2416 transitions. [2021-12-14 16:20:33,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-14 16:20:33,710 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2416 transitions. [2021-12-14 16:20:33,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 16:20:33,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:33,712 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:20:33,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 16:20:33,712 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:33,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:33,713 INFO L85 PathProgramCache]: Analyzing trace with hash 149517079, now seen corresponding path program 1 times [2021-12-14 16:20:33,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:33,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91710164] [2021-12-14 16:20:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:33,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:33,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:20:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:33,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:20:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:33,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:20:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:33,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 16:20:33,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 16:20:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:33,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 16:20:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:33,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 16:20:33,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:33,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-14 16:20:33,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:33,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91710164] [2021-12-14 16:20:33,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91710164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:33,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:33,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 16:20:33,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342138847] [2021-12-14 16:20:33,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:33,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:20:33,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:33,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:20:33,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:20:33,838 INFO L87 Difference]: Start difference. First operand 1817 states and 2416 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 16:20:34,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:34,482 INFO L93 Difference]: Finished difference Result 3640 states and 4857 transitions. [2021-12-14 16:20:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 16:20:34,482 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2021-12-14 16:20:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:34,491 INFO L225 Difference]: With dead ends: 3640 [2021-12-14 16:20:34,491 INFO L226 Difference]: Without dead ends: 2059 [2021-12-14 16:20:34,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-14 16:20:34,496 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 417 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:34,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 2323 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 16:20:34,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2021-12-14 16:20:34,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1877. [2021-12-14 16:20:34,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1495 states have (on average 1.3351170568561872) internal successors, (1996), 1520 states have internal predecessors, (1996), 212 states have call successors, (212), 139 states have call predecessors, (212), 168 states have return successors, (262), 220 states have call predecessors, (262), 210 states have call successors, (262) [2021-12-14 16:20:34,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 2470 transitions. [2021-12-14 16:20:34,586 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 2470 transitions. Word has length 91 [2021-12-14 16:20:34,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:34,587 INFO L470 AbstractCegarLoop]: Abstraction has 1877 states and 2470 transitions. [2021-12-14 16:20:34,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 16:20:34,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 2470 transitions. [2021-12-14 16:20:34,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 16:20:34,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:34,595 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:20:34,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 16:20:34,596 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:34,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:34,596 INFO L85 PathProgramCache]: Analyzing trace with hash 593417753, now seen corresponding path program 1 times [2021-12-14 16:20:34,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:34,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956975405] [2021-12-14 16:20:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:34,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:34,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:34,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:20:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:34,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:20:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:34,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:20:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 16:20:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 16:20:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:34,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 16:20:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:34,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 16:20:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-14 16:20:34,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:34,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956975405] [2021-12-14 16:20:34,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956975405] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:34,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:34,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 16:20:34,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373818332] [2021-12-14 16:20:34,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:34,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 16:20:34,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 16:20:34,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 16:20:34,711 INFO L87 Difference]: Start difference. First operand 1877 states and 2470 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-14 16:20:35,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:35,502 INFO L93 Difference]: Finished difference Result 3437 states and 4521 transitions. [2021-12-14 16:20:35,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-14 16:20:35,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2021-12-14 16:20:35,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:35,509 INFO L225 Difference]: With dead ends: 3437 [2021-12-14 16:20:35,509 INFO L226 Difference]: Without dead ends: 2029 [2021-12-14 16:20:35,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-12-14 16:20:35,513 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 990 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:35,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1018 Valid, 1820 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 16:20:35,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2021-12-14 16:20:35,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 1661. [2021-12-14 16:20:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1331 states have (on average 1.3388429752066116) internal successors, (1782), 1351 states have internal predecessors, (1782), 184 states have call successors, (184), 120 states have call predecessors, (184), 144 states have return successors, (223), 191 states have call predecessors, (223), 182 states have call successors, (223) [2021-12-14 16:20:35,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2189 transitions. [2021-12-14 16:20:35,569 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2189 transitions. Word has length 91 [2021-12-14 16:20:35,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:35,569 INFO L470 AbstractCegarLoop]: Abstraction has 1661 states and 2189 transitions. [2021-12-14 16:20:35,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-14 16:20:35,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2189 transitions. [2021-12-14 16:20:35,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 16:20:35,570 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:35,571 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:20:35,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 16:20:35,571 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1762387497, now seen corresponding path program 1 times [2021-12-14 16:20:35,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:35,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640101777] [2021-12-14 16:20:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:35,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:35,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:35,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:20:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:35,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:20:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:35,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:20:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:35,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 16:20:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:35,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 16:20:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:35,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 16:20:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:35,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 16:20:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-14 16:20:35,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:35,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640101777] [2021-12-14 16:20:35,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640101777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:35,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:35,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:20:35,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45508477] [2021-12-14 16:20:35,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:35,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:20:35,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:35,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:20:35,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:20:35,647 INFO L87 Difference]: Start difference. First operand 1661 states and 2189 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-14 16:20:36,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:36,135 INFO L93 Difference]: Finished difference Result 4803 states and 6357 transitions. [2021-12-14 16:20:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 16:20:36,135 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2021-12-14 16:20:36,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:36,148 INFO L225 Difference]: With dead ends: 4803 [2021-12-14 16:20:36,149 INFO L226 Difference]: Without dead ends: 3379 [2021-12-14 16:20:36,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-14 16:20:36,155 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 915 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:36,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [943 Valid, 1534 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 16:20:36,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3379 states. [2021-12-14 16:20:36,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3379 to 3085. [2021-12-14 16:20:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3085 states, 2444 states have (on average 1.3019639934533551) internal successors, (3182), 2493 states have internal predecessors, (3182), 345 states have call successors, (345), 233 states have call predecessors, (345), 294 states have return successors, (497), 361 states have call predecessors, (497), 343 states have call successors, (497) [2021-12-14 16:20:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 4024 transitions. [2021-12-14 16:20:36,262 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 4024 transitions. Word has length 91 [2021-12-14 16:20:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:36,263 INFO L470 AbstractCegarLoop]: Abstraction has 3085 states and 4024 transitions. [2021-12-14 16:20:36,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-14 16:20:36,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 4024 transitions. [2021-12-14 16:20:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-14 16:20:36,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:36,264 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:20:36,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 16:20:36,265 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:36,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:36,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1474741721, now seen corresponding path program 1 times [2021-12-14 16:20:36,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:36,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917379345] [2021-12-14 16:20:36,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:36,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:20:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:20:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:20:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 16:20:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 16:20:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 16:20:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 16:20:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-14 16:20:36,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:36,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917379345] [2021-12-14 16:20:36,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917379345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:36,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:36,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 16:20:36,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115576438] [2021-12-14 16:20:36,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:36,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 16:20:36,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:36,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 16:20:36,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-14 16:20:36,336 INFO L87 Difference]: Start difference. First operand 3085 states and 4024 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-14 16:20:36,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:36,664 INFO L93 Difference]: Finished difference Result 4656 states and 6024 transitions. [2021-12-14 16:20:36,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 16:20:36,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2021-12-14 16:20:36,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:36,671 INFO L225 Difference]: With dead ends: 4656 [2021-12-14 16:20:36,671 INFO L226 Difference]: Without dead ends: 1808 [2021-12-14 16:20:36,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-14 16:20:36,677 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 728 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:36,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 1115 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 16:20:36,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2021-12-14 16:20:36,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1661. [2021-12-14 16:20:36,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1331 states have (on average 1.3110443275732533) internal successors, (1745), 1351 states have internal predecessors, (1745), 184 states have call successors, (184), 120 states have call predecessors, (184), 144 states have return successors, (223), 191 states have call predecessors, (223), 182 states have call successors, (223) [2021-12-14 16:20:36,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2152 transitions. [2021-12-14 16:20:36,727 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2152 transitions. Word has length 91 [2021-12-14 16:20:36,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:36,727 INFO L470 AbstractCegarLoop]: Abstraction has 1661 states and 2152 transitions. [2021-12-14 16:20:36,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-14 16:20:36,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2152 transitions. [2021-12-14 16:20:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-14 16:20:36,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:36,728 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 16:20:36,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 16:20:36,729 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:36,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:36,729 INFO L85 PathProgramCache]: Analyzing trace with hash 818403522, now seen corresponding path program 1 times [2021-12-14 16:20:36,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:36,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054978963] [2021-12-14 16:20:36,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:36,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 16:20:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-14 16:20:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 16:20:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-14 16:20:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-14 16:20:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 16:20:36,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-14 16:20:36,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 16:20:36,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:36,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054978963] [2021-12-14 16:20:36,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054978963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:36,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:36,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 16:20:36,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287172832] [2021-12-14 16:20:36,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:36,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 16:20:36,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:36,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 16:20:36,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:20:36,818 INFO L87 Difference]: Start difference. First operand 1661 states and 2152 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) [2021-12-14 16:20:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:37,799 INFO L93 Difference]: Finished difference Result 4597 states and 5956 transitions. [2021-12-14 16:20:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-14 16:20:37,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2021-12-14 16:20:37,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:37,824 INFO L225 Difference]: With dead ends: 4597 [2021-12-14 16:20:37,824 INFO L226 Difference]: Without dead ends: 3173 [2021-12-14 16:20:37,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2021-12-14 16:20:37,829 INFO L933 BasicCegarLoop]: 557 mSDtfsCounter, 1602 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:37,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1639 Valid, 1856 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 16:20:37,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2021-12-14 16:20:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3011. [2021-12-14 16:20:37,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 2359 states have (on average 1.2577363289529462) internal successors, (2967), 2401 states have internal predecessors, (2967), 356 states have call successors, (356), 227 states have call predecessors, (356), 294 states have return successors, (500), 385 states have call predecessors, (500), 354 states have call successors, (500) [2021-12-14 16:20:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 3823 transitions. [2021-12-14 16:20:37,924 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 3823 transitions. Word has length 92 [2021-12-14 16:20:37,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:37,925 INFO L470 AbstractCegarLoop]: Abstraction has 3011 states and 3823 transitions. [2021-12-14 16:20:37,925 INFO L471 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) [2021-12-14 16:20:37,925 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 3823 transitions. [2021-12-14 16:20:37,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:20:37,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:37,927 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:37,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 16:20:37,928 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:37,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:37,928 INFO L85 PathProgramCache]: Analyzing trace with hash 232043999, now seen corresponding path program 1 times [2021-12-14 16:20:37,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:37,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419102060] [2021-12-14 16:20:37,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:37,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:37,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:37,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:20:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:37,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:20:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:37,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:20:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:20:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:38,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:38,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419102060] [2021-12-14 16:20:38,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419102060] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:38,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:38,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 16:20:38,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481567254] [2021-12-14 16:20:38,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:38,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 16:20:38,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:38,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 16:20:38,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 16:20:38,002 INFO L87 Difference]: Start difference. First operand 3011 states and 3823 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:38,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:38,698 INFO L93 Difference]: Finished difference Result 3305 states and 4289 transitions. [2021-12-14 16:20:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:20:38,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:20:38,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:38,709 INFO L225 Difference]: With dead ends: 3305 [2021-12-14 16:20:38,709 INFO L226 Difference]: Without dead ends: 3087 [2021-12-14 16:20:38,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 16:20:38,711 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 691 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:38,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 978 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 16:20:38,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2021-12-14 16:20:38,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 3011. [2021-12-14 16:20:38,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 2359 states have (on average 1.2573124205171682) internal successors, (2966), 2401 states have internal predecessors, (2966), 356 states have call successors, (356), 227 states have call predecessors, (356), 294 states have return successors, (500), 385 states have call predecessors, (500), 354 states have call successors, (500) [2021-12-14 16:20:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 3822 transitions. [2021-12-14 16:20:38,846 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 3822 transitions. Word has length 112 [2021-12-14 16:20:38,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:38,846 INFO L470 AbstractCegarLoop]: Abstraction has 3011 states and 3822 transitions. [2021-12-14 16:20:38,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:38,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 3822 transitions. [2021-12-14 16:20:38,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:20:38,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:38,848 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:38,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 16:20:38,849 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:38,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:38,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1539186397, now seen corresponding path program 1 times [2021-12-14 16:20:38,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:38,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241492111] [2021-12-14 16:20:38,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:38,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:38,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:38,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:20:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:38,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:20:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:38,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:20:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:38,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:20:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:38,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:38,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241492111] [2021-12-14 16:20:38,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241492111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:38,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:38,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:20:38,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816713209] [2021-12-14 16:20:38,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:38,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:20:38,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:38,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:20:38,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:20:38,931 INFO L87 Difference]: Start difference. First operand 3011 states and 3822 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:40,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:40,498 INFO L93 Difference]: Finished difference Result 3608 states and 4778 transitions. [2021-12-14 16:20:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:20:40,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:20:40,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:40,508 INFO L225 Difference]: With dead ends: 3608 [2021-12-14 16:20:40,508 INFO L226 Difference]: Without dead ends: 3395 [2021-12-14 16:20:40,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 16:20:40,510 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 1057 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 2013 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 2121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:40,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1082 Valid, 2130 Invalid, 2121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2013 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 16:20:40,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3395 states. [2021-12-14 16:20:40,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3395 to 3234. [2021-12-14 16:20:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 2557 states have (on average 1.281579976535002) internal successors, (3277), 2601 states have internal predecessors, (3277), 373 states have call successors, (373), 233 states have call predecessors, (373), 302 states have return successors, (524), 403 states have call predecessors, (524), 371 states have call successors, (524) [2021-12-14 16:20:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4174 transitions. [2021-12-14 16:20:40,685 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4174 transitions. Word has length 112 [2021-12-14 16:20:40,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:40,686 INFO L470 AbstractCegarLoop]: Abstraction has 3234 states and 4174 transitions. [2021-12-14 16:20:40,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:40,687 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4174 transitions. [2021-12-14 16:20:40,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:20:40,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:40,689 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:40,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 16:20:40,689 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:40,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:40,689 INFO L85 PathProgramCache]: Analyzing trace with hash -79788517, now seen corresponding path program 1 times [2021-12-14 16:20:40,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:40,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670065171] [2021-12-14 16:20:40,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:40,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:40,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:40,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:20:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:40,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:20:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:40,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:20:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:20:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:40,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:40,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670065171] [2021-12-14 16:20:40,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670065171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:40,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:40,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:20:40,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796790801] [2021-12-14 16:20:40,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:40,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:20:40,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:40,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:20:40,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:20:40,776 INFO L87 Difference]: Start difference. First operand 3234 states and 4174 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:42,363 INFO L93 Difference]: Finished difference Result 4367 states and 5970 transitions. [2021-12-14 16:20:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:20:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:20:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:42,376 INFO L225 Difference]: With dead ends: 4367 [2021-12-14 16:20:42,377 INFO L226 Difference]: Without dead ends: 3933 [2021-12-14 16:20:42,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 16:20:42,381 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 1059 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 2115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:42,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 2029 Invalid, 2115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 16:20:42,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2021-12-14 16:20:42,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 3644. [2021-12-14 16:20:42,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3644 states, 2923 states have (on average 1.3137187820732124) internal successors, (3840), 2969 states have internal predecessors, (3840), 403 states have call successors, (403), 245 states have call predecessors, (403), 316 states have return successors, (564), 435 states have call predecessors, (564), 401 states have call successors, (564) [2021-12-14 16:20:42,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3644 states to 3644 states and 4807 transitions. [2021-12-14 16:20:42,561 INFO L78 Accepts]: Start accepts. Automaton has 3644 states and 4807 transitions. Word has length 112 [2021-12-14 16:20:42,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:42,562 INFO L470 AbstractCegarLoop]: Abstraction has 3644 states and 4807 transitions. [2021-12-14 16:20:42,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:42,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3644 states and 4807 transitions. [2021-12-14 16:20:42,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:20:42,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:42,564 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:42,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 16:20:42,565 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:42,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:42,565 INFO L85 PathProgramCache]: Analyzing trace with hash -963297507, now seen corresponding path program 1 times [2021-12-14 16:20:42,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:42,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962899002] [2021-12-14 16:20:42,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:42,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:42,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:20:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:42,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:20:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:42,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:20:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:42,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:20:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:42,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:42,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962899002] [2021-12-14 16:20:42,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962899002] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:42,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:42,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:20:42,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817498089] [2021-12-14 16:20:42,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:42,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:20:42,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:42,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:20:42,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:20:42,644 INFO L87 Difference]: Start difference. First operand 3644 states and 4807 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:44,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:44,288 INFO L93 Difference]: Finished difference Result 5851 states and 8295 transitions. [2021-12-14 16:20:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:20:44,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:20:44,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:44,301 INFO L225 Difference]: With dead ends: 5851 [2021-12-14 16:20:44,301 INFO L226 Difference]: Without dead ends: 5007 [2021-12-14 16:20:44,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 16:20:44,305 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 1059 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 1993 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 2109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:44,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 2026 Invalid, 2109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1993 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 16:20:44,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5007 states. [2021-12-14 16:20:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5007 to 4466. [2021-12-14 16:20:44,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 3657 states have (on average 1.3584905660377358) internal successors, (4968), 3707 states have internal predecessors, (4968), 463 states have call successors, (463), 269 states have call predecessors, (463), 344 states have return successors, (650), 499 states have call predecessors, (650), 461 states have call successors, (650) [2021-12-14 16:20:44,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 6081 transitions. [2021-12-14 16:20:44,535 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 6081 transitions. Word has length 112 [2021-12-14 16:20:44,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:44,536 INFO L470 AbstractCegarLoop]: Abstraction has 4466 states and 6081 transitions. [2021-12-14 16:20:44,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:44,536 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 6081 transitions. [2021-12-14 16:20:44,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:20:44,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:44,538 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:44,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 16:20:44,538 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:44,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:44,539 INFO L85 PathProgramCache]: Analyzing trace with hash -991797797, now seen corresponding path program 1 times [2021-12-14 16:20:44,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:44,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506075343] [2021-12-14 16:20:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:44,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:44,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:20:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:44,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:20:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:44,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:20:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:44,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:20:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:44,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:44,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506075343] [2021-12-14 16:20:44,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506075343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:44,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:44,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:20:44,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239764221] [2021-12-14 16:20:44,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:44,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:20:44,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:44,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:20:44,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:20:44,617 INFO L87 Difference]: Start difference. First operand 4466 states and 6081 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:46,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:46,229 INFO L93 Difference]: Finished difference Result 8817 states and 12959 transitions. [2021-12-14 16:20:46,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:20:46,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:20:46,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:46,260 INFO L225 Difference]: With dead ends: 8817 [2021-12-14 16:20:46,260 INFO L226 Difference]: Without dead ends: 7151 [2021-12-14 16:20:46,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 16:20:46,269 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 1059 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:46,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 2023 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 16:20:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7151 states. [2021-12-14 16:20:46,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7151 to 6116. [2021-12-14 16:20:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6116 states, 5131 states have (on average 1.4094718378483726) internal successors, (7232), 5189 states have internal predecessors, (7232), 583 states have call successors, (583), 317 states have call predecessors, (583), 400 states have return successors, (840), 627 states have call predecessors, (840), 581 states have call successors, (840) [2021-12-14 16:20:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 8655 transitions. [2021-12-14 16:20:46,531 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 8655 transitions. Word has length 112 [2021-12-14 16:20:46,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:46,531 INFO L470 AbstractCegarLoop]: Abstraction has 6116 states and 8655 transitions. [2021-12-14 16:20:46,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:46,532 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 8655 transitions. [2021-12-14 16:20:46,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:20:46,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:46,534 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:46,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 16:20:46,535 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:46,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1362587485, now seen corresponding path program 1 times [2021-12-14 16:20:46,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:46,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716338697] [2021-12-14 16:20:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:46,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:46,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:46,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:20:46,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:20:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:46,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:20:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:46,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:20:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:46,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:46,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:46,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716338697] [2021-12-14 16:20:46,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716338697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:46,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:46,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:20:46,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005640988] [2021-12-14 16:20:46,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:46,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:20:46,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:46,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:20:46,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:20:46,612 INFO L87 Difference]: Start difference. First operand 6116 states and 8655 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:47,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:47,581 INFO L93 Difference]: Finished difference Result 10524 states and 15712 transitions. [2021-12-14 16:20:47,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:20:47,582 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:20:47,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:47,632 INFO L225 Difference]: With dead ends: 10524 [2021-12-14 16:20:47,633 INFO L226 Difference]: Without dead ends: 7206 [2021-12-14 16:20:47,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 16:20:47,641 INFO L933 BasicCegarLoop]: 484 mSDtfsCounter, 868 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 968 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 894 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:47,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [894 Valid, 1276 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 968 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 16:20:47,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7206 states. [2021-12-14 16:20:47,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7206 to 6116. [2021-12-14 16:20:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6116 states, 5131 states have (on average 1.406158643539271) internal successors, (7215), 5189 states have internal predecessors, (7215), 583 states have call successors, (583), 317 states have call predecessors, (583), 400 states have return successors, (840), 627 states have call predecessors, (840), 581 states have call successors, (840) [2021-12-14 16:20:47,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 8638 transitions. [2021-12-14 16:20:47,870 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 8638 transitions. Word has length 112 [2021-12-14 16:20:47,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:47,871 INFO L470 AbstractCegarLoop]: Abstraction has 6116 states and 8638 transitions. [2021-12-14 16:20:47,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:47,871 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 8638 transitions. [2021-12-14 16:20:47,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:20:47,874 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:47,874 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:47,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 16:20:47,875 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:47,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:47,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1055316581, now seen corresponding path program 1 times [2021-12-14 16:20:47,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:47,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660353539] [2021-12-14 16:20:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:47,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:47,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:47,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:47,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:20:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:47,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:20:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:20:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:47,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:20:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:47,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:47,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660353539] [2021-12-14 16:20:47,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660353539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:47,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:47,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:20:47,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571844433] [2021-12-14 16:20:47,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:47,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:20:47,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:47,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:20:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:20:47,989 INFO L87 Difference]: Start difference. First operand 6116 states and 8638 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:49,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:49,757 INFO L93 Difference]: Finished difference Result 14730 states and 22229 transitions. [2021-12-14 16:20:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 16:20:49,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:20:49,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:49,788 INFO L225 Difference]: With dead ends: 14730 [2021-12-14 16:20:49,788 INFO L226 Difference]: Without dead ends: 11414 [2021-12-14 16:20:49,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-14 16:20:49,801 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 1056 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:49,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 2014 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 16:20:49,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11414 states. [2021-12-14 16:20:50,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11414 to 9445. [2021-12-14 16:20:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9445 states, 8108 states have (on average 1.4506660088801184) internal successors, (11762), 8182 states have internal predecessors, (11762), 823 states have call successors, (823), 413 states have call predecessors, (823), 512 states have return successors, (1274), 883 states have call predecessors, (1274), 821 states have call successors, (1274) [2021-12-14 16:20:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9445 states to 9445 states and 13859 transitions. [2021-12-14 16:20:50,228 INFO L78 Accepts]: Start accepts. Automaton has 9445 states and 13859 transitions. Word has length 112 [2021-12-14 16:20:50,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:50,229 INFO L470 AbstractCegarLoop]: Abstraction has 9445 states and 13859 transitions. [2021-12-14 16:20:50,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 9445 states and 13859 transitions. [2021-12-14 16:20:50,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:20:50,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:50,234 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:50,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 16:20:50,234 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:50,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:50,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1826050147, now seen corresponding path program 1 times [2021-12-14 16:20:50,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:50,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135587772] [2021-12-14 16:20:50,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:50,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:50,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:20:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:50,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:20:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:50,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:20:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:50,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:20:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:50,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:50,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:50,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135587772] [2021-12-14 16:20:50,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135587772] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:50,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:50,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:20:50,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447518425] [2021-12-14 16:20:50,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:50,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:20:50,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:50,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:20:50,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:20:50,301 INFO L87 Difference]: Start difference. First operand 9445 states and 13859 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:52,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:52,852 INFO L93 Difference]: Finished difference Result 29563 states and 45572 transitions. [2021-12-14 16:20:52,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 16:20:52,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:20:52,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:52,918 INFO L225 Difference]: With dead ends: 29563 [2021-12-14 16:20:52,918 INFO L226 Difference]: Without dead ends: 22918 [2021-12-14 16:20:52,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 16:20:52,940 INFO L933 BasicCegarLoop]: 769 mSDtfsCounter, 1122 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:52,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 2107 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 16:20:52,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22918 states. [2021-12-14 16:20:53,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22918 to 16038. [2021-12-14 16:20:53,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16038 states, 14029 states have (on average 1.4853517713308146) internal successors, (20838), 14135 states have internal predecessors, (20838), 1271 states have call successors, (1271), 605 states have call predecessors, (1271), 736 states have return successors, (2272), 1363 states have call predecessors, (2272), 1269 states have call successors, (2272) [2021-12-14 16:20:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16038 states to 16038 states and 24381 transitions. [2021-12-14 16:20:53,692 INFO L78 Accepts]: Start accepts. Automaton has 16038 states and 24381 transitions. Word has length 112 [2021-12-14 16:20:53,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:53,693 INFO L470 AbstractCegarLoop]: Abstraction has 16038 states and 24381 transitions. [2021-12-14 16:20:53,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:53,693 INFO L276 IsEmpty]: Start isEmpty. Operand 16038 states and 24381 transitions. [2021-12-14 16:20:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:20:53,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:53,702 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:53,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 16:20:53,703 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:53,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1474223451, now seen corresponding path program 1 times [2021-12-14 16:20:53,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:53,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47771101] [2021-12-14 16:20:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:53,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:20:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:53,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:20:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:53,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:20:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:53,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:20:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:53,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:53,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47771101] [2021-12-14 16:20:53,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47771101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:53,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:53,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:20:53,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692525458] [2021-12-14 16:20:53,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:53,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:20:53,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:53,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:20:53,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:20:53,794 INFO L87 Difference]: Start difference. First operand 16038 states and 24381 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:55,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:55,511 INFO L93 Difference]: Finished difference Result 33199 states and 52323 transitions. [2021-12-14 16:20:55,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:20:55,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:20:55,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:55,573 INFO L225 Difference]: With dead ends: 33199 [2021-12-14 16:20:55,573 INFO L226 Difference]: Without dead ends: 19959 [2021-12-14 16:20:55,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 16:20:55,603 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 867 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:55,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 1260 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 16:20:55,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19959 states. [2021-12-14 16:20:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19959 to 16038. [2021-12-14 16:20:56,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16038 states, 14029 states have (on average 1.4807185116544301) internal successors, (20773), 14135 states have internal predecessors, (20773), 1271 states have call successors, (1271), 605 states have call predecessors, (1271), 736 states have return successors, (2272), 1363 states have call predecessors, (2272), 1269 states have call successors, (2272) [2021-12-14 16:20:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16038 states to 16038 states and 24316 transitions. [2021-12-14 16:20:56,510 INFO L78 Accepts]: Start accepts. Automaton has 16038 states and 24316 transitions. Word has length 112 [2021-12-14 16:20:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:20:56,510 INFO L470 AbstractCegarLoop]: Abstraction has 16038 states and 24316 transitions. [2021-12-14 16:20:56,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:56,510 INFO L276 IsEmpty]: Start isEmpty. Operand 16038 states and 24316 transitions. [2021-12-14 16:20:56,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:20:56,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:20:56,519 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:20:56,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 16:20:56,519 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:20:56,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:20:56,520 INFO L85 PathProgramCache]: Analyzing trace with hash -484351335, now seen corresponding path program 1 times [2021-12-14 16:20:56,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:20:56,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419877443] [2021-12-14 16:20:56,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:20:56,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:20:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:56,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:20:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:56,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:20:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:56,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:20:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:56,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:20:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:56,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:20:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:20:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:20:56,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:20:56,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419877443] [2021-12-14 16:20:56,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419877443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:20:56,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:20:56,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:20:56,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142534609] [2021-12-14 16:20:56,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:20:56,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:20:56,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:20:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:20:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:20:56,609 INFO L87 Difference]: Start difference. First operand 16038 states and 24316 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:20:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:20:59,676 INFO L93 Difference]: Finished difference Result 53342 states and 83704 transitions. [2021-12-14 16:20:59,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 16:20:59,676 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:20:59,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:20:59,811 INFO L225 Difference]: With dead ends: 53342 [2021-12-14 16:20:59,811 INFO L226 Difference]: Without dead ends: 40104 [2021-12-14 16:20:59,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 16:20:59,851 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 1204 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 1877 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-14 16:20:59,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 1989 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1877 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-14 16:20:59,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40104 states. [2021-12-14 16:21:01,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40104 to 29319. [2021-12-14 16:21:01,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29319 states, 25998 states have (on average 1.5033079467651358) internal successors, (39083), 26168 states have internal predecessors, (39083), 2135 states have call successors, (2135), 989 states have call predecessors, (2135), 1184 states have return successors, (4722), 2291 states have call predecessors, (4722), 2133 states have call successors, (4722) [2021-12-14 16:21:01,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29319 states to 29319 states and 45940 transitions. [2021-12-14 16:21:01,590 INFO L78 Accepts]: Start accepts. Automaton has 29319 states and 45940 transitions. Word has length 112 [2021-12-14 16:21:01,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:21:01,590 INFO L470 AbstractCegarLoop]: Abstraction has 29319 states and 45940 transitions. [2021-12-14 16:21:01,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:21:01,590 INFO L276 IsEmpty]: Start isEmpty. Operand 29319 states and 45940 transitions. [2021-12-14 16:21:01,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:21:01,610 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:21:01,610 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:21:01,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 16:21:01,610 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:21:01,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:21:01,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1392131483, now seen corresponding path program 1 times [2021-12-14 16:21:01,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:21:01,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588455485] [2021-12-14 16:21:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:21:01,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:21:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:01,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:21:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:21:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:01,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:21:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:01,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:21:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:01,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:21:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:21:01,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:21:01,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588455485] [2021-12-14 16:21:01,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588455485] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:21:01,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:21:01,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:21:01,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382434013] [2021-12-14 16:21:01,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:21:01,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:21:01,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:21:01,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:21:01,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:21:01,690 INFO L87 Difference]: Start difference. First operand 29319 states and 45940 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:21:04,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:21:04,079 INFO L93 Difference]: Finished difference Result 63153 states and 102051 transitions. [2021-12-14 16:21:04,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 16:21:04,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:21:04,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:21:04,201 INFO L225 Difference]: With dead ends: 63153 [2021-12-14 16:21:04,202 INFO L226 Difference]: Without dead ends: 36632 [2021-12-14 16:21:04,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-14 16:21:04,268 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 1015 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 16:21:04,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 1076 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 16:21:04,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36632 states. [2021-12-14 16:21:05,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36632 to 29319. [2021-12-14 16:21:05,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29319 states, 25998 states have (on average 1.4983460266174322) internal successors, (38954), 26168 states have internal predecessors, (38954), 2135 states have call successors, (2135), 989 states have call predecessors, (2135), 1184 states have return successors, (4722), 2291 states have call predecessors, (4722), 2133 states have call successors, (4722) [2021-12-14 16:21:05,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29319 states to 29319 states and 45811 transitions. [2021-12-14 16:21:05,741 INFO L78 Accepts]: Start accepts. Automaton has 29319 states and 45811 transitions. Word has length 112 [2021-12-14 16:21:05,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:21:05,741 INFO L470 AbstractCegarLoop]: Abstraction has 29319 states and 45811 transitions. [2021-12-14 16:21:05,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:21:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 29319 states and 45811 transitions. [2021-12-14 16:21:05,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:21:05,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:21:05,762 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:21:05,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 16:21:05,763 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:21:05,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:21:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash -486999463, now seen corresponding path program 1 times [2021-12-14 16:21:05,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:21:05,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424511763] [2021-12-14 16:21:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:21:05,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:21:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:05,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:21:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:05,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:21:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:05,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:21:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:05,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:21:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:21:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:21:05,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:21:05,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424511763] [2021-12-14 16:21:05,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424511763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:21:05,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:21:05,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:21:05,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543096515] [2021-12-14 16:21:05,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:21:05,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:21:05,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:21:05,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:21:05,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:21:05,821 INFO L87 Difference]: Start difference. First operand 29319 states and 45811 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:21:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:21:10,762 INFO L93 Difference]: Finished difference Result 99649 states and 159632 transitions. [2021-12-14 16:21:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 16:21:10,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:21:10,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:21:11,045 INFO L225 Difference]: With dead ends: 99649 [2021-12-14 16:21:11,045 INFO L226 Difference]: Without dead ends: 73130 [2021-12-14 16:21:11,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 16:21:11,128 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 1077 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 1988 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 16:21:11,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 2006 Invalid, 2110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1988 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 16:21:11,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73130 states. [2021-12-14 16:21:14,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73130 to 55945. [2021-12-14 16:21:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55945 states, 50064 states have (on average 1.510826142537552) internal successors, (75638), 50362 states have internal predecessors, (75638), 3799 states have call successors, (3799), 1757 states have call predecessors, (3799), 2080 states have return successors, (11016), 4083 states have call predecessors, (11016), 3797 states have call successors, (11016) [2021-12-14 16:21:14,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55945 states to 55945 states and 90453 transitions. [2021-12-14 16:21:14,252 INFO L78 Accepts]: Start accepts. Automaton has 55945 states and 90453 transitions. Word has length 112 [2021-12-14 16:21:14,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 16:21:14,253 INFO L470 AbstractCegarLoop]: Abstraction has 55945 states and 90453 transitions. [2021-12-14 16:21:14,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:21:14,253 INFO L276 IsEmpty]: Start isEmpty. Operand 55945 states and 90453 transitions. [2021-12-14 16:21:14,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-14 16:21:14,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 16:21:14,281 INFO L514 BasicCegarLoop]: 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] [2021-12-14 16:21:14,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 16:21:14,281 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 16:21:14,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 16:21:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash 837856731, now seen corresponding path program 1 times [2021-12-14 16:21:14,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 16:21:14,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124847209] [2021-12-14 16:21:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 16:21:14,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 16:21:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:14,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-14 16:21:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:14,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-14 16:21:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 16:21:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:14,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 16:21:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-14 16:21:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 16:21:14,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 16:21:14,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 16:21:14,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124847209] [2021-12-14 16:21:14,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124847209] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 16:21:14,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 16:21:14,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 16:21:14,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303906003] [2021-12-14 16:21:14,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 16:21:14,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 16:21:14,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 16:21:14,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 16:21:14,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-14 16:21:14,341 INFO L87 Difference]: Start difference. First operand 55945 states and 90453 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-14 16:21:22,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 16:21:22,481 INFO L93 Difference]: Finished difference Result 191943 states and 317132 transitions. [2021-12-14 16:21:22,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 16:21:22,481 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 5 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2021-12-14 16:21:22,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 16:21:23,113 INFO L225 Difference]: With dead ends: 191943 [2021-12-14 16:21:23,113 INFO L226 Difference]: Without dead ends: 138798 [2021-12-14 16:21:23,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-14 16:21:23,228 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 1085 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1974 SdHoareTripleChecker+Invalid, 1961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 16:21:23,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1117 Valid, 1974 Invalid, 1961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]