./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.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 f9db8f562e00e8e2c77bd4109a87025a2d9cfdc1d504bc43872dc3be0602b46a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 20:38:33,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 20:38:33,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 20:38:33,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 20:38:33,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 20:38:33,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 20:38:33,980 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 20:38:33,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 20:38:33,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 20:38:33,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 20:38:33,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 20:38:33,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 20:38:33,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 20:38:33,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 20:38:33,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 20:38:33,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 20:38:33,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 20:38:33,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 20:38:33,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 20:38:33,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 20:38:33,995 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 20:38:34,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 20:38:34,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 20:38:34,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 20:38:34,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 20:38:34,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 20:38:34,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 20:38:34,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 20:38:34,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 20:38:34,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 20:38:34,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 20:38:34,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 20:38:34,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 20:38:34,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 20:38:34,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 20:38:34,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 20:38:34,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 20:38:34,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 20:38:34,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 20:38:34,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 20:38:34,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 20:38:34,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 20:38:34,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 20:38:34,055 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 20:38:34,056 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 20:38:34,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 20:38:34,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 20:38:34,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 20:38:34,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 20:38:34,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 20:38:34,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 20:38:34,058 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 20:38:34,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 20:38:34,059 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 20:38:34,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 20:38:34,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 20:38:34,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 20:38:34,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 20:38:34,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 20:38:34,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 20:38:34,061 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 20:38:34,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 20:38:34,061 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 20:38:34,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 20:38:34,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 20:38:34,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 20:38:34,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 20:38:34,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:38:34,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 20:38:34,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 20:38:34,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 20:38:34,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 20:38:34,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 20:38:34,063 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 20:38:34,064 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 20:38:34,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 20:38:34,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9db8f562e00e8e2c77bd4109a87025a2d9cfdc1d504bc43872dc3be0602b46a [2022-07-19 20:38:34,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 20:38:34,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 20:38:34,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 20:38:34,274 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 20:38:34,274 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 20:38:34,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c [2022-07-19 20:38:34,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8cb62720/b5ea0a528c404a94b86be5603c59a476/FLAG117cd5901 [2022-07-19 20:38:34,813 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 20:38:34,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.10.cil-2.c [2022-07-19 20:38:34,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8cb62720/b5ea0a528c404a94b86be5603c59a476/FLAG117cd5901 [2022-07-19 20:38:35,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8cb62720/b5ea0a528c404a94b86be5603c59a476 [2022-07-19 20:38:35,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 20:38:35,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 20:38:35,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 20:38:35,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 20:38:35,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 20:38:35,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:38:35" (1/1) ... [2022-07-19 20:38:35,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12387412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35, skipping insertion in model container [2022-07-19 20:38:35,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 08:38:35" (1/1) ... [2022-07-19 20:38:35,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 20:38:35,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 20:38:35,390 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.10.cil-2.c[911,924] [2022-07-19 20:38:35,437 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.10.cil-2.c[8416,8429] [2022-07-19 20:38:35,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:38:35,530 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 20:38:35,541 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.10.cil-2.c[911,924] [2022-07-19 20:38:35,556 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.10.cil-2.c[8416,8429] [2022-07-19 20:38:35,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 20:38:35,631 INFO L208 MainTranslator]: Completed translation [2022-07-19 20:38:35,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35 WrapperNode [2022-07-19 20:38:35,632 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 20:38:35,633 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 20:38:35,633 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 20:38:35,633 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 20:38:35,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35" (1/1) ... [2022-07-19 20:38:35,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35" (1/1) ... [2022-07-19 20:38:35,701 INFO L137 Inliner]: procedures = 75, calls = 91, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 962 [2022-07-19 20:38:35,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 20:38:35,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 20:38:35,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 20:38:35,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 20:38:35,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35" (1/1) ... [2022-07-19 20:38:35,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35" (1/1) ... [2022-07-19 20:38:35,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35" (1/1) ... [2022-07-19 20:38:35,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35" (1/1) ... [2022-07-19 20:38:35,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35" (1/1) ... [2022-07-19 20:38:35,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35" (1/1) ... [2022-07-19 20:38:35,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35" (1/1) ... [2022-07-19 20:38:35,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 20:38:35,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 20:38:35,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 20:38:35,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 20:38:35,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35" (1/1) ... [2022-07-19 20:38:35,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 20:38:35,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:38:35,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 20:38:35,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 20:38:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 20:38:35,843 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 20:38:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 20:38:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-19 20:38:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-19 20:38:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-19 20:38:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-19 20:38:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-19 20:38:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-19 20:38:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-19 20:38:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-19 20:38:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-19 20:38:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-19 20:38:35,844 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-19 20:38:35,844 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-19 20:38:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-19 20:38:35,845 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-19 20:38:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-19 20:38:35,845 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-19 20:38:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-19 20:38:35,845 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-19 20:38:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-19 20:38:35,845 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-19 20:38:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 20:38:35,845 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-19 20:38:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-19 20:38:35,846 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-19 20:38:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-19 20:38:35,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 20:38:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 20:38:35,846 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-19 20:38:35,846 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-19 20:38:35,980 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 20:38:35,995 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 20:38:36,644 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-07-19 20:38:36,644 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-07-19 20:38:36,699 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 20:38:36,717 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 20:38:36,717 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-07-19 20:38:36,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:38:36 BoogieIcfgContainer [2022-07-19 20:38:36,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 20:38:36,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 20:38:36,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 20:38:36,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 20:38:36,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 08:38:35" (1/3) ... [2022-07-19 20:38:36,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d49868a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:38:36, skipping insertion in model container [2022-07-19 20:38:36,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 08:38:35" (2/3) ... [2022-07-19 20:38:36,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d49868a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 08:38:36, skipping insertion in model container [2022-07-19 20:38:36,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 08:38:36" (3/3) ... [2022-07-19 20:38:36,742 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.10.cil-2.c [2022-07-19 20:38:36,756 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 20:38:36,756 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 20:38:36,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 20:38:36,836 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6cb29ea4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@648ceb15 [2022-07-19 20:38:36,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 20:38:36,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 449 states, 392 states have (on average 1.6301020408163265) internal successors, (639), 398 states have internal predecessors, (639), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-19 20:38:36,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:38:36,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:36,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:36,866 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:36,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:36,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1246254058, now seen corresponding path program 1 times [2022-07-19 20:38:36,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:36,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266484534] [2022-07-19 20:38:36,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:36,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:38:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:38:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:37,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266484534] [2022-07-19 20:38:37,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266484534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:37,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:37,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:38:37,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138007004] [2022-07-19 20:38:37,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:37,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:38:37,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:37,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:38:37,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:38:37,297 INFO L87 Difference]: Start difference. First operand has 449 states, 392 states have (on average 1.6301020408163265) internal successors, (639), 398 states have internal predecessors, (639), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:38:38,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:38,522 INFO L93 Difference]: Finished difference Result 1023 states and 1629 transitions. [2022-07-19 20:38:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:38:38,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:38:38,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:38,557 INFO L225 Difference]: With dead ends: 1023 [2022-07-19 20:38:38,557 INFO L226 Difference]: Without dead ends: 590 [2022-07-19 20:38:38,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:38:38,575 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 1142 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 1964 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:38,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 1964 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:38:38,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2022-07-19 20:38:38,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 551. [2022-07-19 20:38:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 474 states have (on average 1.518987341772152) internal successors, (720), 480 states have internal predecessors, (720), 53 states have call successors, (53), 21 states have call predecessors, (53), 22 states have return successors, (56), 52 states have call predecessors, (56), 51 states have call successors, (56) [2022-07-19 20:38:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 829 transitions. [2022-07-19 20:38:38,666 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 829 transitions. Word has length 65 [2022-07-19 20:38:38,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:38,667 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 829 transitions. [2022-07-19 20:38:38,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:38:38,667 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 829 transitions. [2022-07-19 20:38:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:38:38,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:38,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:38,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 20:38:38,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:38,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:38,672 INFO L85 PathProgramCache]: Analyzing trace with hash 432634582, now seen corresponding path program 1 times [2022-07-19 20:38:38,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:38,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137750206] [2022-07-19 20:38:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:38,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:38,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:38,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:38,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:38:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:38,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:38:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:38,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:38,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:38,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137750206] [2022-07-19 20:38:38,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137750206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:38,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:38,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:38:38,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922382150] [2022-07-19 20:38:38,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:38,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:38:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:38,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:38:38,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:38:38,842 INFO L87 Difference]: Start difference. First operand 551 states and 829 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:38:40,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:40,089 INFO L93 Difference]: Finished difference Result 948 states and 1395 transitions. [2022-07-19 20:38:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 20:38:40,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-19 20:38:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:40,095 INFO L225 Difference]: With dead ends: 948 [2022-07-19 20:38:40,095 INFO L226 Difference]: Without dead ends: 739 [2022-07-19 20:38:40,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-19 20:38:40,098 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 1309 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 1419 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:40,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 2626 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1419 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:38:40,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-07-19 20:38:40,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 663. [2022-07-19 20:38:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 564 states have (on average 1.5) internal successors, (846), 572 states have internal predecessors, (846), 66 states have call successors, (66), 28 states have call predecessors, (66), 31 states have return successors, (77), 66 states have call predecessors, (77), 64 states have call successors, (77) [2022-07-19 20:38:40,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 989 transitions. [2022-07-19 20:38:40,146 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 989 transitions. Word has length 65 [2022-07-19 20:38:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:40,147 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 989 transitions. [2022-07-19 20:38:40,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:38:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 989 transitions. [2022-07-19 20:38:40,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 20:38:40,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:40,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:40,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 20:38:40,151 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:40,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:40,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1595951528, now seen corresponding path program 1 times [2022-07-19 20:38:40,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:40,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969896653] [2022-07-19 20:38:40,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:40,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:40,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:40,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:40,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:40,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:38:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 20:38:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:40,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 20:38:40,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:40,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:40,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969896653] [2022-07-19 20:38:40,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969896653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:40,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:40,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:38:40,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794975299] [2022-07-19 20:38:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:40,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:38:40,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:40,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:38:40,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:38:40,311 INFO L87 Difference]: Start difference. First operand 663 states and 989 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-19 20:38:42,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:42,213 INFO L93 Difference]: Finished difference Result 2209 states and 3187 transitions. [2022-07-19 20:38:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:38:42,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-07-19 20:38:42,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:42,227 INFO L225 Difference]: With dead ends: 2209 [2022-07-19 20:38:42,228 INFO L226 Difference]: Without dead ends: 1876 [2022-07-19 20:38:42,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 20:38:42,238 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 3910 mSDsluCounter, 1780 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:42,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3928 Valid, 2586 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 1730 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-19 20:38:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2022-07-19 20:38:42,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 1716. [2022-07-19 20:38:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1716 states, 1412 states have (on average 1.4093484419263456) internal successors, (1990), 1435 states have internal predecessors, (1990), 176 states have call successors, (176), 111 states have call predecessors, (176), 126 states have return successors, (210), 172 states have call predecessors, (210), 174 states have call successors, (210) [2022-07-19 20:38:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2376 transitions. [2022-07-19 20:38:42,358 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2376 transitions. Word has length 65 [2022-07-19 20:38:42,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:42,359 INFO L495 AbstractCegarLoop]: Abstraction has 1716 states and 2376 transitions. [2022-07-19 20:38:42,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-19 20:38:42,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2376 transitions. [2022-07-19 20:38:42,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:38:42,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:42,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:42,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 20:38:42,362 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:42,362 INFO L85 PathProgramCache]: Analyzing trace with hash -31119566, now seen corresponding path program 1 times [2022-07-19 20:38:42,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:42,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135457806] [2022-07-19 20:38:42,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:42,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:42,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 20:38:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:38:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:42,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:42,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135457806] [2022-07-19 20:38:42,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135457806] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:42,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:42,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:38:42,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583173720] [2022-07-19 20:38:42,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:42,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:38:42,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:42,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:38:42,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:38:42,503 INFO L87 Difference]: Start difference. First operand 1716 states and 2376 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:38:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:43,624 INFO L93 Difference]: Finished difference Result 3244 states and 4455 transitions. [2022-07-19 20:38:43,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 20:38:43,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 20:38:43,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:43,634 INFO L225 Difference]: With dead ends: 3244 [2022-07-19 20:38:43,635 INFO L226 Difference]: Without dead ends: 1864 [2022-07-19 20:38:43,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:38:43,640 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 586 mSDsluCounter, 2270 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:43,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 2929 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:38:43,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-07-19 20:38:43,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1756. [2022-07-19 20:38:43,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1444 states have (on average 1.3961218836565097) internal successors, (2016), 1467 states have internal predecessors, (2016), 176 states have call successors, (176), 111 states have call predecessors, (176), 134 states have return successors, (218), 180 states have call predecessors, (218), 174 states have call successors, (218) [2022-07-19 20:38:43,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2410 transitions. [2022-07-19 20:38:43,729 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2410 transitions. Word has length 66 [2022-07-19 20:38:43,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:43,730 INFO L495 AbstractCegarLoop]: Abstraction has 1756 states and 2410 transitions. [2022-07-19 20:38:43,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:38:43,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2410 transitions. [2022-07-19 20:38:43,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 20:38:43,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:43,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:43,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 20:38:43,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:43,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:43,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1060478864, now seen corresponding path program 1 times [2022-07-19 20:38:43,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:43,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165217922] [2022-07-19 20:38:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:43,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:43,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 20:38:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 20:38:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:43,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:43,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:43,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165217922] [2022-07-19 20:38:43,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165217922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:43,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:43,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 20:38:43,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115057637] [2022-07-19 20:38:43,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:43,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 20:38:43,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:43,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 20:38:43,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 20:38:43,852 INFO L87 Difference]: Start difference. First operand 1756 states and 2410 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 20:38:45,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:45,742 INFO L93 Difference]: Finished difference Result 5328 states and 7284 transitions. [2022-07-19 20:38:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 20:38:45,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-07-19 20:38:45,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:45,754 INFO L225 Difference]: With dead ends: 5328 [2022-07-19 20:38:45,754 INFO L226 Difference]: Without dead ends: 2147 [2022-07-19 20:38:45,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 20:38:45,763 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 4055 mSDsluCounter, 1806 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 761 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4073 SdHoareTripleChecker+Valid, 2603 SdHoareTripleChecker+Invalid, 2412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 761 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:45,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4073 Valid, 2603 Invalid, 2412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [761 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 20:38:45,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2022-07-19 20:38:45,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1967. [2022-07-19 20:38:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1967 states, 1583 states have (on average 1.3531269740998104) internal successors, (2142), 1608 states have internal predecessors, (2142), 216 states have call successors, (216), 139 states have call predecessors, (216), 166 states have return successors, (264), 222 states have call predecessors, (264), 214 states have call successors, (264) [2022-07-19 20:38:45,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1967 states to 1967 states and 2622 transitions. [2022-07-19 20:38:45,859 INFO L78 Accepts]: Start accepts. Automaton has 1967 states and 2622 transitions. Word has length 66 [2022-07-19 20:38:45,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:45,860 INFO L495 AbstractCegarLoop]: Abstraction has 1967 states and 2622 transitions. [2022-07-19 20:38:45,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 20:38:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1967 states and 2622 transitions. [2022-07-19 20:38:45,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:38:45,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:45,863 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:45,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 20:38:45,863 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:45,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash 135267171, now seen corresponding path program 1 times [2022-07-19 20:38:45,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:45,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988763798] [2022-07-19 20:38:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:45,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:45,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:45,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:45,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:45,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:45,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:45,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:45,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:45,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:38:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:45,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:38:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:45,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:38:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:46,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:38:46,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:46,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988763798] [2022-07-19 20:38:46,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988763798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:46,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:46,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:38:46,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370717424] [2022-07-19 20:38:46,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:46,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:38:46,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:46,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:38:46,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:38:46,008 INFO L87 Difference]: Start difference. First operand 1967 states and 2622 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:38:47,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:47,032 INFO L93 Difference]: Finished difference Result 3792 states and 5024 transitions. [2022-07-19 20:38:47,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:38:47,033 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-07-19 20:38:47,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:47,044 INFO L225 Difference]: With dead ends: 3792 [2022-07-19 20:38:47,044 INFO L226 Difference]: Without dead ends: 2161 [2022-07-19 20:38:47,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:38:47,066 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 581 mSDsluCounter, 2229 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:47,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 2875 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:38:47,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2022-07-19 20:38:47,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2027. [2022-07-19 20:38:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 1631 states have (on average 1.3390557939914163) internal successors, (2184), 1656 states have internal predecessors, (2184), 216 states have call successors, (216), 139 states have call predecessors, (216), 178 states have return successors, (276), 234 states have call predecessors, (276), 214 states have call successors, (276) [2022-07-19 20:38:47,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 2676 transitions. [2022-07-19 20:38:47,162 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 2676 transitions. Word has length 91 [2022-07-19 20:38:47,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:47,164 INFO L495 AbstractCegarLoop]: Abstraction has 2027 states and 2676 transitions. [2022-07-19 20:38:47,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 20:38:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 2676 transitions. [2022-07-19 20:38:47,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:38:47,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:47,171 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:47,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 20:38:47,171 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:47,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:47,172 INFO L85 PathProgramCache]: Analyzing trace with hash 579167845, now seen corresponding path program 1 times [2022-07-19 20:38:47,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:47,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227726096] [2022-07-19 20:38:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:47,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:47,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:47,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:47,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:47,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:47,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:38:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:47,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:38:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:38:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:38:47,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:47,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227726096] [2022-07-19 20:38:47,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227726096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:47,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:47,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 20:38:47,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537737005] [2022-07-19 20:38:47,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:47,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 20:38:47,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:47,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 20:38:47,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 20:38:47,287 INFO L87 Difference]: Start difference. First operand 2027 states and 2676 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:38:48,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:48,341 INFO L93 Difference]: Finished difference Result 3554 states and 4640 transitions. [2022-07-19 20:38:48,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 20:38:48,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-19 20:38:48,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:48,354 INFO L225 Difference]: With dead ends: 3554 [2022-07-19 20:38:48,354 INFO L226 Difference]: Without dead ends: 2101 [2022-07-19 20:38:48,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-19 20:38:48,361 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 1621 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1652 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 1392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:48,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1652 Valid, 2001 Invalid, 1392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 1184 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 20:38:48,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2022-07-19 20:38:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1806. [2022-07-19 20:38:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1463 states have (on average 1.343814080656186) internal successors, (1966), 1483 states have internal predecessors, (1966), 188 states have call successors, (188), 120 states have call predecessors, (188), 153 states have return successors, (236), 204 states have call predecessors, (236), 186 states have call successors, (236) [2022-07-19 20:38:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2390 transitions. [2022-07-19 20:38:48,441 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2390 transitions. Word has length 91 [2022-07-19 20:38:48,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:48,441 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2390 transitions. [2022-07-19 20:38:48,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:38:48,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2390 transitions. [2022-07-19 20:38:48,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:38:48,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:48,443 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:48,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 20:38:48,443 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:48,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:48,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1776637405, now seen corresponding path program 1 times [2022-07-19 20:38:48,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:48,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128513607] [2022-07-19 20:38:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:48,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:48,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:48,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:48,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:48,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:38:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:48,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:38:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:48,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:38:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 20:38:48,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:48,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128513607] [2022-07-19 20:38:48,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128513607] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:48,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:48,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:48,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293098923] [2022-07-19 20:38:48,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:48,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:48,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:48,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:48,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:48,528 INFO L87 Difference]: Start difference. First operand 1806 states and 2390 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-19 20:38:49,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:49,068 INFO L93 Difference]: Finished difference Result 4958 states and 6502 transitions. [2022-07-19 20:38:49,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 20:38:49,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-07-19 20:38:49,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:49,085 INFO L225 Difference]: With dead ends: 4958 [2022-07-19 20:38:49,085 INFO L226 Difference]: Without dead ends: 3489 [2022-07-19 20:38:49,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-19 20:38:49,090 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 1233 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1265 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:49,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1265 Valid, 1998 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:38:49,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2022-07-19 20:38:49,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 3275. [2022-07-19 20:38:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 2612 states have (on average 1.2993874425727412) internal successors, (3394), 2661 states have internal predecessors, (3394), 349 states have call successors, (349), 233 states have call predecessors, (349), 312 states have return successors, (519), 383 states have call predecessors, (519), 347 states have call successors, (519) [2022-07-19 20:38:49,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4262 transitions. [2022-07-19 20:38:49,238 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4262 transitions. Word has length 91 [2022-07-19 20:38:49,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:49,238 INFO L495 AbstractCegarLoop]: Abstraction has 3275 states and 4262 transitions. [2022-07-19 20:38:49,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-19 20:38:49,238 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4262 transitions. [2022-07-19 20:38:49,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 20:38:49,240 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:49,240 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:49,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 20:38:49,240 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:49,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:49,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1460491813, now seen corresponding path program 1 times [2022-07-19 20:38:49,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:49,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755951888] [2022-07-19 20:38:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:49,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:49,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:49,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:49,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:49,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:38:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:49,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:38:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 20:38:49,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 20:38:49,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:49,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755951888] [2022-07-19 20:38:49,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755951888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:49,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:49,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:38:49,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799837789] [2022-07-19 20:38:49,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:49,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:38:49,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:49,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:38:49,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:38:49,290 INFO L87 Difference]: Start difference. First operand 3275 states and 4262 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:38:49,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:49,847 INFO L93 Difference]: Finished difference Result 4859 states and 6246 transitions. [2022-07-19 20:38:49,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 20:38:49,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-07-19 20:38:49,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:49,856 INFO L225 Difference]: With dead ends: 4859 [2022-07-19 20:38:49,856 INFO L226 Difference]: Without dead ends: 1921 [2022-07-19 20:38:49,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:38:49,863 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 696 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:49,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 1781 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 20:38:49,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2022-07-19 20:38:49,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1806. [2022-07-19 20:38:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1463 states have (on average 1.3185235816814764) internal successors, (1929), 1483 states have internal predecessors, (1929), 188 states have call successors, (188), 120 states have call predecessors, (188), 153 states have return successors, (236), 204 states have call predecessors, (236), 186 states have call successors, (236) [2022-07-19 20:38:49,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2353 transitions. [2022-07-19 20:38:49,948 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2353 transitions. Word has length 91 [2022-07-19 20:38:49,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:49,949 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2353 transitions. [2022-07-19 20:38:49,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 20:38:49,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2353 transitions. [2022-07-19 20:38:49,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 20:38:49,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:49,951 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:49,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 20:38:49,951 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:49,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:49,951 INFO L85 PathProgramCache]: Analyzing trace with hash 186814586, now seen corresponding path program 1 times [2022-07-19 20:38:49,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:49,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772184960] [2022-07-19 20:38:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:49,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:49,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:50,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:50,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:50,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:50,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:50,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:38:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:50,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:38:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:50,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 20:38:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 20:38:50,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:50,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772184960] [2022-07-19 20:38:50,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772184960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:50,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:50,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 20:38:50,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299417013] [2022-07-19 20:38:50,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:50,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 20:38:50,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:50,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 20:38:50,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:38:50,050 INFO L87 Difference]: Start difference. First operand 1806 states and 2353 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:38:51,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:51,343 INFO L93 Difference]: Finished difference Result 4224 states and 5436 transitions. [2022-07-19 20:38:51,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 20:38:51,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-07-19 20:38:51,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:51,356 INFO L225 Difference]: With dead ends: 4224 [2022-07-19 20:38:51,356 INFO L226 Difference]: Without dead ends: 2604 [2022-07-19 20:38:51,361 INFO L412 NwaCegarLoop]: 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 [2022-07-19 20:38:51,361 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 2310 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:51,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2351 Valid, 2071 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:38:51,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-07-19 20:38:51,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2427. [2022-07-19 20:38:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2427 states, 1930 states have (on average 1.2803108808290156) internal successors, (2471), 1958 states have internal predecessors, (2471), 265 states have call successors, (265), 168 states have call predecessors, (265), 230 states have return successors, (367), 302 states have call predecessors, (367), 263 states have call successors, (367) [2022-07-19 20:38:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 3103 transitions. [2022-07-19 20:38:51,469 INFO L78 Accepts]: Start accepts. Automaton has 2427 states and 3103 transitions. Word has length 92 [2022-07-19 20:38:51,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:51,469 INFO L495 AbstractCegarLoop]: Abstraction has 2427 states and 3103 transitions. [2022-07-19 20:38:51,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 20:38:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2427 states and 3103 transitions. [2022-07-19 20:38:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 20:38:51,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:51,472 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:51,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 20:38:51,473 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:51,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:51,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1184625881, now seen corresponding path program 1 times [2022-07-19 20:38:51,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:51,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298848381] [2022-07-19 20:38:51,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:51,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 20:38:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 20:38:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 20:38:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 20:38:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 20:38:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 20:38:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 20:38:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 20:38:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 20:38:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 20:38:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 20:38:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 20:38:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:38:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 20:38:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 20:38:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-19 20:38:51,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:51,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298848381] [2022-07-19 20:38:51,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298848381] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 20:38:51,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301876347] [2022-07-19 20:38:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:51,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 20:38:51,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 20:38:51,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 20:38:51,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 20:38:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:51,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 20:38:51,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 20:38:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 20:38:51,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 20:38:51,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301876347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:51,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 20:38:51,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-19 20:38:51,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791281439] [2022-07-19 20:38:51,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:51,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 20:38:51,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:51,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 20:38:51,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:38:51,879 INFO L87 Difference]: Start difference. First operand 2427 states and 3103 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 20:38:52,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:52,033 INFO L93 Difference]: Finished difference Result 6353 states and 7932 transitions. [2022-07-19 20:38:52,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 20:38:52,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-07-19 20:38:52,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:52,054 INFO L225 Difference]: With dead ends: 6353 [2022-07-19 20:38:52,054 INFO L226 Difference]: Without dead ends: 4339 [2022-07-19 20:38:52,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:38:52,062 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 61 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:52,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1307 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 20:38:52,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4339 states. [2022-07-19 20:38:52,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4339 to 4297. [2022-07-19 20:38:52,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 3387 states have (on average 1.247416592855034) internal successors, (4225), 3438 states have internal predecessors, (4225), 472 states have call successors, (472), 329 states have call predecessors, (472), 436 states have return successors, (635), 531 states have call predecessors, (635), 470 states have call successors, (635) [2022-07-19 20:38:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 5332 transitions. [2022-07-19 20:38:52,265 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 5332 transitions. Word has length 163 [2022-07-19 20:38:52,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:52,266 INFO L495 AbstractCegarLoop]: Abstraction has 4297 states and 5332 transitions. [2022-07-19 20:38:52,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 20:38:52,266 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 5332 transitions. [2022-07-19 20:38:52,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:38:52,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:52,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:52,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 20:38:52,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-19 20:38:52,484 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1277878197, now seen corresponding path program 1 times [2022-07-19 20:38:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:52,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174671976] [2022-07-19 20:38:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:52,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:52,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:52,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:38:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:52,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:38:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:52,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:38:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:52,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:38:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:52,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:52,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174671976] [2022-07-19 20:38:52,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174671976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:52,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:52,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:38:52,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602497146] [2022-07-19 20:38:52,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:52,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:38:52,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:52,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:38:52,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:38:52,609 INFO L87 Difference]: Start difference. First operand 4297 states and 5332 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:54,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:54,221 INFO L93 Difference]: Finished difference Result 4737 states and 6042 transitions. [2022-07-19 20:38:54,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:38:54,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2022-07-19 20:38:54,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:54,238 INFO L225 Difference]: With dead ends: 4737 [2022-07-19 20:38:54,238 INFO L226 Difference]: Without dead ends: 4417 [2022-07-19 20:38:54,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:38:54,241 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 991 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:54,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 1236 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:38:54,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2022-07-19 20:38:54,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 4297. [2022-07-19 20:38:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 3387 states have (on average 1.2471213463241806) internal successors, (4224), 3438 states have internal predecessors, (4224), 472 states have call successors, (472), 329 states have call predecessors, (472), 436 states have return successors, (635), 531 states have call predecessors, (635), 470 states have call successors, (635) [2022-07-19 20:38:54,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 5331 transitions. [2022-07-19 20:38:54,553 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 5331 transitions. Word has length 156 [2022-07-19 20:38:54,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:54,553 INFO L495 AbstractCegarLoop]: Abstraction has 4297 states and 5331 transitions. [2022-07-19 20:38:54,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 5331 transitions. [2022-07-19 20:38:54,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:38:54,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:54,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:54,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 20:38:54,557 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:54,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:54,558 INFO L85 PathProgramCache]: Analyzing trace with hash -653247437, now seen corresponding path program 1 times [2022-07-19 20:38:54,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:54,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547321571] [2022-07-19 20:38:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:54,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:54,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:54,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:38:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:54,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:38:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:54,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:38:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:54,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:38:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:54,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:54,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547321571] [2022-07-19 20:38:54,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547321571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:54,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:54,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 20:38:54,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314297929] [2022-07-19 20:38:54,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:54,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 20:38:54,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:54,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 20:38:54,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 20:38:54,675 INFO L87 Difference]: Start difference. First operand 4297 states and 5331 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:56,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:56,194 INFO L93 Difference]: Finished difference Result 4729 states and 6025 transitions. [2022-07-19 20:38:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:38:56,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 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 156 [2022-07-19 20:38:56,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:56,210 INFO L225 Difference]: With dead ends: 4729 [2022-07-19 20:38:56,210 INFO L226 Difference]: Without dead ends: 4417 [2022-07-19 20:38:56,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-19 20:38:56,213 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 982 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1004 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:56,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1004 Valid, 1234 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:38:56,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4417 states. [2022-07-19 20:38:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4417 to 4297. [2022-07-19 20:38:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4297 states, 3387 states have (on average 1.2468260997933274) internal successors, (4223), 3438 states have internal predecessors, (4223), 472 states have call successors, (472), 329 states have call predecessors, (472), 436 states have return successors, (635), 531 states have call predecessors, (635), 470 states have call successors, (635) [2022-07-19 20:38:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4297 states to 4297 states and 5330 transitions. [2022-07-19 20:38:56,501 INFO L78 Accepts]: Start accepts. Automaton has 4297 states and 5330 transitions. Word has length 156 [2022-07-19 20:38:56,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:56,502 INFO L495 AbstractCegarLoop]: Abstraction has 4297 states and 5330 transitions. [2022-07-19 20:38:56,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:56,502 INFO L276 IsEmpty]: Start isEmpty. Operand 4297 states and 5330 transitions. [2022-07-19 20:38:56,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:38:56,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:56,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:56,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 20:38:56,505 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:56,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1134622385, now seen corresponding path program 1 times [2022-07-19 20:38:56,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:56,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022484091] [2022-07-19 20:38:56,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:56,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:56,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:56,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:56,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:38:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:56,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:38:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:38:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:38:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:56,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:56,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:56,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022484091] [2022-07-19 20:38:56,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022484091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:56,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:56,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 20:38:56,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924548695] [2022-07-19 20:38:56,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:56,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 20:38:56,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:56,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 20:38:56,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 20:38:56,632 INFO L87 Difference]: Start difference. First operand 4297 states and 5330 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:58,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:38:58,985 INFO L93 Difference]: Finished difference Result 5169 states and 6737 transitions. [2022-07-19 20:38:58,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 20:38:58,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 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 156 [2022-07-19 20:38:58,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:38:59,003 INFO L225 Difference]: With dead ends: 5169 [2022-07-19 20:38:59,004 INFO L226 Difference]: Without dead ends: 4860 [2022-07-19 20:38:59,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:38:59,007 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 1560 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 1845 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1734 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:38:59,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1589 Valid, 1734 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1845 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 20:38:59,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2022-07-19 20:38:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4621. [2022-07-19 20:38:59,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4621 states, 3685 states have (on average 1.2746268656716417) internal successors, (4697), 3737 states have internal predecessors, (4697), 491 states have call successors, (491), 335 states have call predecessors, (491), 443 states have return successors, (657), 550 states have call predecessors, (657), 489 states have call successors, (657) [2022-07-19 20:38:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4621 states to 4621 states and 5845 transitions. [2022-07-19 20:38:59,314 INFO L78 Accepts]: Start accepts. Automaton has 4621 states and 5845 transitions. Word has length 156 [2022-07-19 20:38:59,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:38:59,314 INFO L495 AbstractCegarLoop]: Abstraction has 4621 states and 5845 transitions. [2022-07-19 20:38:59,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:38:59,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4621 states and 5845 transitions. [2022-07-19 20:38:59,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:38:59,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:38:59,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:38:59,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 20:38:59,317 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:38:59,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:38:59,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1761391309, now seen corresponding path program 1 times [2022-07-19 20:38:59,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:38:59,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829749146] [2022-07-19 20:38:59,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:38:59,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:38:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:59,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:38:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:59,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:38:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:38:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:59,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:38:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:59,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:38:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:38:59,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:38:59,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:38:59,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829749146] [2022-07-19 20:38:59,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829749146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:38:59,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:38:59,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:38:59,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450067495] [2022-07-19 20:38:59,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:38:59,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:38:59,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:38:59,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:38:59,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:38:59,462 INFO L87 Difference]: Start difference. First operand 4621 states and 5845 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:02,421 INFO L93 Difference]: Finished difference Result 5952 states and 7993 transitions. [2022-07-19 20:39:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:39:02,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:39:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:02,435 INFO L225 Difference]: With dead ends: 5952 [2022-07-19 20:39:02,435 INFO L226 Difference]: Without dead ends: 5319 [2022-07-19 20:39:02,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:39:02,439 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 1581 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 2885 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1610 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 2996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:02,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1610 Valid, 2848 Invalid, 2996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2885 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 20:39:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5319 states. [2022-07-19 20:39:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5319 to 4922. [2022-07-19 20:39:02,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4922 states, 3960 states have (on average 1.2941919191919191) internal successors, (5125), 4013 states have internal predecessors, (5125), 510 states have call successors, (510), 341 states have call predecessors, (510), 450 states have return successors, (678), 570 states have call predecessors, (678), 508 states have call successors, (678) [2022-07-19 20:39:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4922 states to 4922 states and 6313 transitions. [2022-07-19 20:39:02,737 INFO L78 Accepts]: Start accepts. Automaton has 4922 states and 6313 transitions. Word has length 156 [2022-07-19 20:39:02,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:02,737 INFO L495 AbstractCegarLoop]: Abstraction has 4922 states and 6313 transitions. [2022-07-19 20:39:02,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:02,738 INFO L276 IsEmpty]: Start isEmpty. Operand 4922 states and 6313 transitions. [2022-07-19 20:39:02,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:39:02,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:02,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:02,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 20:39:02,741 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:02,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash 916135537, now seen corresponding path program 1 times [2022-07-19 20:39:02,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:02,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836427954] [2022-07-19 20:39:02,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:02,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:02,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:39:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:02,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:39:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:02,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:39:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:02,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:39:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:02,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:02,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836427954] [2022-07-19 20:39:02,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836427954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:02,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:02,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:02,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544487946] [2022-07-19 20:39:02,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:02,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:02,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:02,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:02,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:02,849 INFO L87 Difference]: Start difference. First operand 4922 states and 6313 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:05,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:05,771 INFO L93 Difference]: Finished difference Result 7106 states and 9829 transitions. [2022-07-19 20:39:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:39:05,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:39:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:05,787 INFO L225 Difference]: With dead ends: 7106 [2022-07-19 20:39:05,787 INFO L226 Difference]: Without dead ends: 6172 [2022-07-19 20:39:05,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:39:05,793 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 1578 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 2887 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:05,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 2840 Invalid, 3001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2887 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 20:39:05,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6172 states. [2022-07-19 20:39:06,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6172 to 5525. [2022-07-19 20:39:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5525 states, 4511 states have (on average 1.326091775659499) internal successors, (5982), 4566 states have internal predecessors, (5982), 548 states have call successors, (548), 353 states have call predecessors, (548), 464 states have return successors, (724), 610 states have call predecessors, (724), 546 states have call successors, (724) [2022-07-19 20:39:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 7254 transitions. [2022-07-19 20:39:06,158 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 7254 transitions. Word has length 156 [2022-07-19 20:39:06,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:06,158 INFO L495 AbstractCegarLoop]: Abstraction has 5525 states and 7254 transitions. [2022-07-19 20:39:06,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:06,159 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 7254 transitions. [2022-07-19 20:39:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:39:06,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:06,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:06,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 20:39:06,162 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:06,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:06,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1279602035, now seen corresponding path program 1 times [2022-07-19 20:39:06,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:06,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833066912] [2022-07-19 20:39:06,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:06,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:06,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:06,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:39:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:06,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:39:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:06,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:39:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:39:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:06,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:06,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833066912] [2022-07-19 20:39:06,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833066912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:06,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:06,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:06,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992998054] [2022-07-19 20:39:06,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:06,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:06,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:06,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:06,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:06,288 INFO L87 Difference]: Start difference. First operand 5525 states and 7254 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:07,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:07,716 INFO L93 Difference]: Finished difference Result 7699 states and 10763 transitions. [2022-07-19 20:39:07,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:39:07,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:39:07,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:07,732 INFO L225 Difference]: With dead ends: 7699 [2022-07-19 20:39:07,732 INFO L226 Difference]: Without dead ends: 6162 [2022-07-19 20:39:07,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:39:07,741 INFO L413 NwaCegarLoop]: 679 mSDtfsCounter, 1389 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 1260 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:07,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 1492 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:39:07,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6162 states. [2022-07-19 20:39:08,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6162 to 5525. [2022-07-19 20:39:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5525 states, 4511 states have (on average 1.3249833739747285) internal successors, (5977), 4566 states have internal predecessors, (5977), 548 states have call successors, (548), 353 states have call predecessors, (548), 464 states have return successors, (724), 610 states have call predecessors, (724), 546 states have call successors, (724) [2022-07-19 20:39:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 7249 transitions. [2022-07-19 20:39:08,138 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 7249 transitions. Word has length 156 [2022-07-19 20:39:08,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:08,139 INFO L495 AbstractCegarLoop]: Abstraction has 5525 states and 7249 transitions. [2022-07-19 20:39:08,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 7249 transitions. [2022-07-19 20:39:08,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:39:08,142 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:08,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:08,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 20:39:08,143 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:08,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1568421425, now seen corresponding path program 1 times [2022-07-19 20:39:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:08,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011761432] [2022-07-19 20:39:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:08,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:08,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:39:08,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:08,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:39:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:08,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:39:08,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:08,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:39:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:08,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:08,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011761432] [2022-07-19 20:39:08,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011761432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:08,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:08,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:08,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373406550] [2022-07-19 20:39:08,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:08,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:08,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:08,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:08,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:08,248 INFO L87 Difference]: Start difference. First operand 5525 states and 7249 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:09,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:09,889 INFO L93 Difference]: Finished difference Result 7693 states and 10737 transitions. [2022-07-19 20:39:09,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:39:09,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:39:09,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:09,912 INFO L225 Difference]: With dead ends: 7693 [2022-07-19 20:39:09,913 INFO L226 Difference]: Without dead ends: 6156 [2022-07-19 20:39:09,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:39:09,923 INFO L413 NwaCegarLoop]: 675 mSDtfsCounter, 1387 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:09,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 1488 Invalid, 1410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 20:39:09,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6156 states. [2022-07-19 20:39:10,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6156 to 5525. [2022-07-19 20:39:10,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5525 states, 4511 states have (on average 1.3238749722899579) internal successors, (5972), 4566 states have internal predecessors, (5972), 548 states have call successors, (548), 353 states have call predecessors, (548), 464 states have return successors, (724), 610 states have call predecessors, (724), 546 states have call successors, (724) [2022-07-19 20:39:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 7244 transitions. [2022-07-19 20:39:10,359 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 7244 transitions. Word has length 156 [2022-07-19 20:39:10,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:10,359 INFO L495 AbstractCegarLoop]: Abstraction has 5525 states and 7244 transitions. [2022-07-19 20:39:10,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:10,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 7244 transitions. [2022-07-19 20:39:10,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:39:10,363 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:10,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:10,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 20:39:10,364 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:10,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1023548851, now seen corresponding path program 1 times [2022-07-19 20:39:10,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:10,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244620658] [2022-07-19 20:39:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:10,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:10,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:39:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:10,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:39:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:10,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:39:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:10,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:39:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:10,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:10,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244620658] [2022-07-19 20:39:10,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244620658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:10,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:10,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:10,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066635599] [2022-07-19 20:39:10,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:10,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:10,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:10,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:10,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:10,508 INFO L87 Difference]: Start difference. First operand 5525 states and 7244 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:13,423 INFO L93 Difference]: Finished difference Result 9310 states and 13264 transitions. [2022-07-19 20:39:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:39:13,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:39:13,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:13,446 INFO L225 Difference]: With dead ends: 9310 [2022-07-19 20:39:13,446 INFO L226 Difference]: Without dead ends: 7773 [2022-07-19 20:39:13,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:39:13,454 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 1561 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 2843 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 2960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:13,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 2822 Invalid, 2960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2843 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 20:39:13,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7773 states. [2022-07-19 20:39:13,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7773 to 6740. [2022-07-19 20:39:13,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6740 states, 5622 states have (on average 1.367484880825329) internal successors, (7688), 5681 states have internal predecessors, (7688), 624 states have call successors, (624), 377 states have call predecessors, (624), 492 states have return successors, (822), 690 states have call predecessors, (822), 622 states have call successors, (822) [2022-07-19 20:39:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6740 states to 6740 states and 9134 transitions. [2022-07-19 20:39:13,928 INFO L78 Accepts]: Start accepts. Automaton has 6740 states and 9134 transitions. Word has length 156 [2022-07-19 20:39:13,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:13,928 INFO L495 AbstractCegarLoop]: Abstraction has 6740 states and 9134 transitions. [2022-07-19 20:39:13,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6740 states and 9134 transitions. [2022-07-19 20:39:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:39:13,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:13,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:13,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 20:39:13,932 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:13,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:13,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1698708977, now seen corresponding path program 1 times [2022-07-19 20:39:13,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:13,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672651620] [2022-07-19 20:39:13,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:13,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:13,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:39:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:14,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:39:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:14,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:39:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:39:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:14,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:14,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672651620] [2022-07-19 20:39:14,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672651620] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:14,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:14,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:14,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126505256] [2022-07-19 20:39:14,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:14,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:14,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:14,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:14,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:14,045 INFO L87 Difference]: Start difference. First operand 6740 states and 9134 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:17,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:17,138 INFO L93 Difference]: Finished difference Result 13737 states and 20238 transitions. [2022-07-19 20:39:17,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:39:17,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:39:17,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:17,167 INFO L225 Difference]: With dead ends: 13737 [2022-07-19 20:39:17,167 INFO L226 Difference]: Without dead ends: 10985 [2022-07-19 20:39:17,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:39:17,178 INFO L413 NwaCegarLoop]: 961 mSDtfsCounter, 1556 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:17,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 2814 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2823 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 20:39:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10985 states. [2022-07-19 20:39:17,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10985 to 9181. [2022-07-19 20:39:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9181 states, 7855 states have (on average 1.4179503500954806) internal successors, (11138), 7922 states have internal predecessors, (11138), 776 states have call successors, (776), 425 states have call predecessors, (776), 548 states have return successors, (1036), 850 states have call predecessors, (1036), 774 states have call successors, (1036) [2022-07-19 20:39:17,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9181 states to 9181 states and 12950 transitions. [2022-07-19 20:39:17,873 INFO L78 Accepts]: Start accepts. Automaton has 9181 states and 12950 transitions. Word has length 156 [2022-07-19 20:39:17,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:17,873 INFO L495 AbstractCegarLoop]: Abstraction has 9181 states and 12950 transitions. [2022-07-19 20:39:17,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:17,874 INFO L276 IsEmpty]: Start isEmpty. Operand 9181 states and 12950 transitions. [2022-07-19 20:39:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:39:17,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:17,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:17,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 20:39:17,878 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:17,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1113937327, now seen corresponding path program 1 times [2022-07-19 20:39:17,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:17,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872028492] [2022-07-19 20:39:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:17,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:39:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:17,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:39:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:17,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:39:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:17,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:39:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:17,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:17,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872028492] [2022-07-19 20:39:17,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872028492] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:17,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:17,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:17,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676028826] [2022-07-19 20:39:17,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:17,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:17,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:17,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:17,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:17,996 INFO L87 Difference]: Start difference. First operand 9181 states and 12950 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:19,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:19,668 INFO L93 Difference]: Finished difference Result 16248 states and 24261 transitions. [2022-07-19 20:39:19,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:39:19,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:39:19,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:19,699 INFO L225 Difference]: With dead ends: 16248 [2022-07-19 20:39:19,699 INFO L226 Difference]: Without dead ends: 11055 [2022-07-19 20:39:19,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:39:19,717 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 1442 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 1193 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:19,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1446 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1193 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 20:39:19,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11055 states. [2022-07-19 20:39:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11055 to 9181. [2022-07-19 20:39:20,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9181 states, 7855 states have (on average 1.415786123488224) internal successors, (11121), 7922 states have internal predecessors, (11121), 776 states have call successors, (776), 425 states have call predecessors, (776), 548 states have return successors, (1036), 850 states have call predecessors, (1036), 774 states have call successors, (1036) [2022-07-19 20:39:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9181 states to 9181 states and 12933 transitions. [2022-07-19 20:39:20,466 INFO L78 Accepts]: Start accepts. Automaton has 9181 states and 12933 transitions. Word has length 156 [2022-07-19 20:39:20,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:20,467 INFO L495 AbstractCegarLoop]: Abstraction has 9181 states and 12933 transitions. [2022-07-19 20:39:20,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:20,467 INFO L276 IsEmpty]: Start isEmpty. Operand 9181 states and 12933 transitions. [2022-07-19 20:39:20,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:39:20,471 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:20,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:20,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 20:39:20,472 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:20,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:20,472 INFO L85 PathProgramCache]: Analyzing trace with hash 679431729, now seen corresponding path program 1 times [2022-07-19 20:39:20,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:20,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605798102] [2022-07-19 20:39:20,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:20,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:20,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:20,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:39:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:39:20,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:20,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:39:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:20,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:39:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:20,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:20,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605798102] [2022-07-19 20:39:20,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605798102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:20,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:20,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:20,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822427847] [2022-07-19 20:39:20,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:20,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:20,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:20,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:20,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:20,593 INFO L87 Difference]: Start difference. First operand 9181 states and 12933 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:24,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:24,136 INFO L93 Difference]: Finished difference Result 22588 states and 34152 transitions. [2022-07-19 20:39:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 20:39:24,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:39:24,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:24,199 INFO L225 Difference]: With dead ends: 22588 [2022-07-19 20:39:24,199 INFO L226 Difference]: Without dead ends: 17395 [2022-07-19 20:39:24,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 20:39:24,223 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 1548 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:24,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 2803 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 20:39:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17395 states. [2022-07-19 20:39:25,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17395 to 14093. [2022-07-19 20:39:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14093 states, 12351 states have (on average 1.4606914419885029) internal successors, (18041), 12434 states have internal predecessors, (18041), 1080 states have call successors, (1080), 521 states have call predecessors, (1080), 660 states have return successors, (1518), 1170 states have call predecessors, (1518), 1078 states have call successors, (1518) [2022-07-19 20:39:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14093 states to 14093 states and 20639 transitions. [2022-07-19 20:39:25,344 INFO L78 Accepts]: Start accepts. Automaton has 14093 states and 20639 transitions. Word has length 156 [2022-07-19 20:39:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:25,344 INFO L495 AbstractCegarLoop]: Abstraction has 14093 states and 20639 transitions. [2022-07-19 20:39:25,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 14093 states and 20639 transitions. [2022-07-19 20:39:25,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:39:25,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:25,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:25,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 20:39:25,351 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:25,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:25,352 INFO L85 PathProgramCache]: Analyzing trace with hash 249773423, now seen corresponding path program 1 times [2022-07-19 20:39:25,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:25,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641611413] [2022-07-19 20:39:25,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:25,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:25,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:39:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:25,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:39:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:25,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:39:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:39:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:25,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:25,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641611413] [2022-07-19 20:39:25,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641611413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:25,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:25,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:25,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473471580] [2022-07-19 20:39:25,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:25,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:25,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:25,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:25,471 INFO L87 Difference]: Start difference. First operand 14093 states and 20639 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:27,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:27,858 INFO L93 Difference]: Finished difference Result 27652 states and 42368 transitions. [2022-07-19 20:39:27,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:39:27,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:39:27,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:27,901 INFO L225 Difference]: With dead ends: 27652 [2022-07-19 20:39:27,901 INFO L226 Difference]: Without dead ends: 17547 [2022-07-19 20:39:27,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:39:27,922 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 1387 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:27,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 1467 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 20:39:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17547 states. [2022-07-19 20:39:28,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17547 to 14093. [2022-07-19 20:39:28,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14093 states, 12351 states have (on average 1.4580195935551776) internal successors, (18008), 12434 states have internal predecessors, (18008), 1080 states have call successors, (1080), 521 states have call predecessors, (1080), 660 states have return successors, (1518), 1170 states have call predecessors, (1518), 1078 states have call successors, (1518) [2022-07-19 20:39:28,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14093 states to 14093 states and 20606 transitions. [2022-07-19 20:39:28,930 INFO L78 Accepts]: Start accepts. Automaton has 14093 states and 20606 transitions. Word has length 156 [2022-07-19 20:39:28,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:28,930 INFO L495 AbstractCegarLoop]: Abstraction has 14093 states and 20606 transitions. [2022-07-19 20:39:28,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:28,930 INFO L276 IsEmpty]: Start isEmpty. Operand 14093 states and 20606 transitions. [2022-07-19 20:39:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:39:28,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:28,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:28,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 20:39:28,937 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:28,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:28,937 INFO L85 PathProgramCache]: Analyzing trace with hash -456823183, now seen corresponding path program 1 times [2022-07-19 20:39:28,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:28,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542164876] [2022-07-19 20:39:28,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:28,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:28,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:28,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:39:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:39:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:29,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:39:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:29,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:39:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:29,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:29,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:29,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542164876] [2022-07-19 20:39:29,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542164876] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:29,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:29,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:29,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054060475] [2022-07-19 20:39:29,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:29,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:29,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:29,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:29,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:29,041 INFO L87 Difference]: Start difference. First operand 14093 states and 20606 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:31,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:31,578 INFO L93 Difference]: Finished difference Result 27618 states and 42201 transitions. [2022-07-19 20:39:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 20:39:31,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:39:31,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:31,633 INFO L225 Difference]: With dead ends: 27618 [2022-07-19 20:39:31,633 INFO L226 Difference]: Without dead ends: 17513 [2022-07-19 20:39:31,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 20:39:31,661 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 1186 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:31,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 1688 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 20:39:31,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17513 states. [2022-07-19 20:39:32,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17513 to 14093. [2022-07-19 20:39:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14093 states, 12351 states have (on average 1.4553477451218524) internal successors, (17975), 12434 states have internal predecessors, (17975), 1080 states have call successors, (1080), 521 states have call predecessors, (1080), 660 states have return successors, (1518), 1170 states have call predecessors, (1518), 1078 states have call successors, (1518) [2022-07-19 20:39:32,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14093 states to 14093 states and 20573 transitions. [2022-07-19 20:39:32,677 INFO L78 Accepts]: Start accepts. Automaton has 14093 states and 20573 transitions. Word has length 156 [2022-07-19 20:39:32,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:32,677 INFO L495 AbstractCegarLoop]: Abstraction has 14093 states and 20573 transitions. [2022-07-19 20:39:32,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:32,678 INFO L276 IsEmpty]: Start isEmpty. Operand 14093 states and 20573 transitions. [2022-07-19 20:39:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:39:32,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:32,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:32,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 20:39:32,684 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:32,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:32,684 INFO L85 PathProgramCache]: Analyzing trace with hash 490214703, now seen corresponding path program 1 times [2022-07-19 20:39:32,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:32,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653624443] [2022-07-19 20:39:32,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:32,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:32,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:32,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:39:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:32,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:39:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:32,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:39:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:32,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:39:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:32,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:32,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653624443] [2022-07-19 20:39:32,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653624443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:32,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:32,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:32,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056182519] [2022-07-19 20:39:32,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:32,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:32,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:32,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:32,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:32,821 INFO L87 Difference]: Start difference. First operand 14093 states and 20573 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:38,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:38,940 INFO L93 Difference]: Finished difference Result 44642 states and 68606 transitions. [2022-07-19 20:39:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:39:38,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:39:38,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:39,035 INFO L225 Difference]: With dead ends: 44642 [2022-07-19 20:39:39,035 INFO L226 Difference]: Without dead ends: 34537 [2022-07-19 20:39:39,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:39:39,065 INFO L413 NwaCegarLoop]: 930 mSDtfsCounter, 1901 mSDsluCounter, 1842 mSDsCounter, 0 mSdLazyCounter, 2742 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1941 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:39,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1941 Valid, 2772 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2742 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 20:39:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34537 states. [2022-07-19 20:39:41,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34537 to 23756. [2022-07-19 20:39:41,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23756 states, 21214 states have (on average 1.4868011690393137) internal successors, (31541), 21329 states have internal predecessors, (31541), 1656 states have call successors, (1656), 713 states have call predecessors, (1656), 884 states have return successors, (2612), 1778 states have call predecessors, (2612), 1654 states have call successors, (2612) [2022-07-19 20:39:41,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23756 states to 23756 states and 35809 transitions. [2022-07-19 20:39:41,109 INFO L78 Accepts]: Start accepts. Automaton has 23756 states and 35809 transitions. Word has length 156 [2022-07-19 20:39:41,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:41,109 INFO L495 AbstractCegarLoop]: Abstraction has 23756 states and 35809 transitions. [2022-07-19 20:39:41,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 23756 states and 35809 transitions. [2022-07-19 20:39:41,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:39:41,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:41,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:41,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 20:39:41,117 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:41,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:41,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1352048305, now seen corresponding path program 1 times [2022-07-19 20:39:41,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:41,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561995644] [2022-07-19 20:39:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:41,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:41,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:41,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:39:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:41,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:39:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:41,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:39:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:39:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:41,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:41,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:41,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561995644] [2022-07-19 20:39:41,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561995644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:41,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:41,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:41,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341591534] [2022-07-19 20:39:41,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:41,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:41,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:41,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:41,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:41,242 INFO L87 Difference]: Start difference. First operand 23756 states and 35809 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:51,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:39:51,051 INFO L93 Difference]: Finished difference Result 82903 states and 129408 transitions. [2022-07-19 20:39:51,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:39:51,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:39:51,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:39:51,213 INFO L225 Difference]: With dead ends: 82903 [2022-07-19 20:39:51,213 INFO L226 Difference]: Without dead ends: 63135 [2022-07-19 20:39:51,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:39:51,263 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 1618 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 3156 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1646 SdHoareTripleChecker+Valid, 2909 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 3156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 20:39:51,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1646 Valid, 2909 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 3156 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 20:39:51,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63135 states. [2022-07-19 20:39:55,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63135 to 43205. [2022-07-19 20:39:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43205 states, 39095 states have (on average 1.5078910346591636) internal successors, (58951), 39274 states have internal predecessors, (58951), 2776 states have call successors, (2776), 1097 states have call predecessors, (2776), 1332 states have return successors, (5254), 2962 states have call predecessors, (5254), 2774 states have call successors, (5254) [2022-07-19 20:39:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43205 states to 43205 states and 66981 transitions. [2022-07-19 20:39:55,331 INFO L78 Accepts]: Start accepts. Automaton has 43205 states and 66981 transitions. Word has length 156 [2022-07-19 20:39:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 20:39:55,331 INFO L495 AbstractCegarLoop]: Abstraction has 43205 states and 66981 transitions. [2022-07-19 20:39:55,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:39:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 43205 states and 66981 transitions. [2022-07-19 20:39:55,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 20:39:55,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 20:39:55,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 20:39:55,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 20:39:55,348 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 20:39:55,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 20:39:55,349 INFO L85 PathProgramCache]: Analyzing trace with hash -698360593, now seen corresponding path program 1 times [2022-07-19 20:39:55,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 20:39:55,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077994149] [2022-07-19 20:39:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 20:39:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 20:39:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 20:39:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 20:39:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:55,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 20:39:55,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:55,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 20:39:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:55,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 20:39:55,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 20:39:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 20:39:55,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 20:39:55,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077994149] [2022-07-19 20:39:55,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077994149] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 20:39:55,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 20:39:55,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 20:39:55,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406011053] [2022-07-19 20:39:55,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 20:39:55,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 20:39:55,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 20:39:55,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 20:39:55,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 20:39:55,465 INFO L87 Difference]: Start difference. First operand 43205 states and 66981 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 20:40:12,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 20:40:12,519 INFO L93 Difference]: Finished difference Result 156732 states and 248946 transitions. [2022-07-19 20:40:12,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 20:40:12,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 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 156 [2022-07-19 20:40:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 20:40:12,852 INFO L225 Difference]: With dead ends: 156732 [2022-07-19 20:40:12,852 INFO L226 Difference]: Without dead ends: 117515 [2022-07-19 20:40:12,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 20:40:12,937 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 1782 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1822 SdHoareTripleChecker+Valid, 2760 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 20:40:12,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1822 Valid, 2760 Invalid, 2840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 20:40:13,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117515 states.