./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.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 0dd7176ec9512a8a603e4cceffab6b6f1677decce373a9b5c36f88d73957ca4d --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:54:02,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:54:02,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:54:02,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:54:02,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:54:02,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:54:02,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:54:02,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:54:02,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:54:02,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:54:02,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:54:02,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:54:02,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:54:02,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:54:02,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:54:02,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:54:02,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:54:02,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:54:02,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:54:02,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:54:02,964 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:54:02,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:54:02,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:54:02,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:54:02,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:54:02,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:54:02,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:54:02,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:54:02,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:54:02,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:54:02,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:54:02,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:54:02,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:54:02,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:54:02,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:54:02,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:54:02,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:54:02,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:54:02,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:54:02,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:54:02,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:54:02,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:54:02,989 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:54:03,020 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:54:03,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:54:03,022 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:54:03,022 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:54:03,023 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:54:03,023 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:54:03,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:54:03,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:54:03,024 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:54:03,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:54:03,025 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:54:03,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:54:03,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:54:03,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:54:03,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:54:03,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:54:03,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:54:03,027 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:54:03,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:54:03,027 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:54:03,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:54:03,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:54:03,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:54:03,028 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:54:03,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:54:03,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:54:03,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:54:03,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:54:03,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:54:03,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:54:03,030 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:54:03,030 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:54:03,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:54:03,031 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dd7176ec9512a8a603e4cceffab6b6f1677decce373a9b5c36f88d73957ca4d [2022-07-13 19:54:03,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:54:03,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:54:03,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:54:03,347 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:54:03,348 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:54:03,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c [2022-07-13 19:54:03,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/635c3e328/762e007119bd45f48da83cc6dedd3ebb/FLAG3b04433b3 [2022-07-13 19:54:04,320 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:54:04,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c [2022-07-13 19:54:04,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/635c3e328/762e007119bd45f48da83cc6dedd3ebb/FLAG3b04433b3 [2022-07-13 19:54:04,702 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/635c3e328/762e007119bd45f48da83cc6dedd3ebb [2022-07-13 19:54:04,704 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:54:04,705 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:54:04,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:54:04,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:54:04,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:54:04,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:54:04" (1/1) ... [2022-07-13 19:54:04,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b7259b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:04, skipping insertion in model container [2022-07-13 19:54:04,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:54:04" (1/1) ... [2022-07-13 19:54:04,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:54:04,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:54:06,519 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/Problem05_label42+token_ring.11.cil-2.c[378560,378573] [2022-07-13 19:54:06,550 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/Problem05_label42+token_ring.11.cil-2.c[383339,383352] [2022-07-13 19:54:06,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:54:06,852 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:54:07,733 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/Problem05_label42+token_ring.11.cil-2.c[378560,378573] [2022-07-13 19:54:07,742 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/Problem05_label42+token_ring.11.cil-2.c[383339,383352] [2022-07-13 19:54:07,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:54:07,836 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:54:07,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:07 WrapperNode [2022-07-13 19:54:07,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:54:07,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:54:07,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:54:07,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:54:07,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:07" (1/1) ... [2022-07-13 19:54:07,943 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:07" (1/1) ... [2022-07-13 19:54:08,516 INFO L137 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13141 [2022-07-13 19:54:08,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:54:08,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:54:08,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:54:08,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:54:08,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:07" (1/1) ... [2022-07-13 19:54:08,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:07" (1/1) ... [2022-07-13 19:54:08,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:07" (1/1) ... [2022-07-13 19:54:08,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:07" (1/1) ... [2022-07-13 19:54:08,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:07" (1/1) ... [2022-07-13 19:54:08,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:07" (1/1) ... [2022-07-13 19:54:09,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:07" (1/1) ... [2022-07-13 19:54:09,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:54:09,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:54:09,083 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:54:09,083 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:54:09,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:07" (1/1) ... [2022-07-13 19:54:09,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:54:09,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:54:09,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 19:54:09,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 19:54:09,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:54:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-13 19:54:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-13 19:54:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-13 19:54:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-13 19:54:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-13 19:54:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-13 19:54:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-13 19:54:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-13 19:54:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-13 19:54:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-13 19:54:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-13 19:54:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-13 19:54:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:54:09,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:54:09,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:54:09,336 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:54:09,337 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:54:15,512 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:54:15,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:54:15,542 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-13 19:54:15,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:54:15 BoogieIcfgContainer [2022-07-13 19:54:15,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:54:15,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:54:15,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:54:15,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:54:15,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:54:04" (1/3) ... [2022-07-13 19:54:15,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20696ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:54:15, skipping insertion in model container [2022-07-13 19:54:15,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:54:07" (2/3) ... [2022-07-13 19:54:15,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20696ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:54:15, skipping insertion in model container [2022-07-13 19:54:15,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:54:15" (3/3) ... [2022-07-13 19:54:15,557 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.11.cil-2.c [2022-07-13 19:54:15,569 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:54:15,570 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 19:54:15,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:54:15,663 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@34bd3135, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@bb93f45 [2022-07-13 19:54:15,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 19:54:15,675 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 19:54:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:54:15,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:15,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:15,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:15,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2022-07-13 19:54:15,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:15,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882163693] [2022-07-13 19:54:15,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:15,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:16,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:16,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:54:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:16,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:54:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:16,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:54:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:16,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:54:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:16,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:16,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:16,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882163693] [2022-07-13 19:54:16,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882163693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:16,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:16,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 19:54:16,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439944807] [2022-07-13 19:54:16,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:16,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 19:54:16,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:16,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 19:54:16,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 19:54:16,392 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-07-13 19:54:18,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:18,073 INFO L93 Difference]: Finished difference Result 5199 states and 9547 transitions. [2022-07-13 19:54:18,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 19:54:18,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-07-13 19:54:18,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:18,156 INFO L225 Difference]: With dead ends: 5199 [2022-07-13 19:54:18,156 INFO L226 Difference]: Without dead ends: 2604 [2022-07-13 19:54:18,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 19:54:18,178 INFO L413 NwaCegarLoop]: 4637 mSDtfsCounter, 953 mSDsluCounter, 12439 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 17076 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:18,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 17076 Invalid, 728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 19:54:18,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-07-13 19:54:18,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2473. [2022-07-13 19:54:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-13 19:54:18,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2022-07-13 19:54:18,329 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2022-07-13 19:54:18,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:18,329 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2022-07-13 19:54:18,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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) [2022-07-13 19:54:18,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2022-07-13 19:54:18,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:54:18,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:18,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:18,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:54:18,335 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:18,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:18,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2022-07-13 19:54:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:18,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233128265] [2022-07-13 19:54:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:18,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:54:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:18,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:54:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:54:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:54:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:18,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:18,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:18,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233128265] [2022-07-13 19:54:18,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233128265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:18,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:18,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 19:54:18,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823090074] [2022-07-13 19:54:18,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:18,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:54:18,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:18,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:54:18,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:54:18,572 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-07-13 19:54:21,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:21,437 INFO L93 Difference]: Finished difference Result 3417 states and 6038 transitions. [2022-07-13 19:54:21,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 19:54:21,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-07-13 19:54:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:21,456 INFO L225 Difference]: With dead ends: 3417 [2022-07-13 19:54:21,456 INFO L226 Difference]: Without dead ends: 3084 [2022-07-13 19:54:21,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:54:21,461 INFO L413 NwaCegarLoop]: 4616 mSDtfsCounter, 5395 mSDsluCounter, 12755 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 17371 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:21,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5413 Valid, 17371 Invalid, 1981 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [112 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 19:54:21,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2022-07-13 19:54:21,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2823. [2022-07-13 19:54:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-07-13 19:54:21,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5069 transitions. [2022-07-13 19:54:21,567 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5069 transitions. Word has length 167 [2022-07-13 19:54:21,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:21,567 INFO L495 AbstractCegarLoop]: Abstraction has 2823 states and 5069 transitions. [2022-07-13 19:54:21,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 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) [2022-07-13 19:54:21,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5069 transitions. [2022-07-13 19:54:21,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:54:21,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:21,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:21,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:54:21,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:21,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:21,572 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2022-07-13 19:54:21,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:21,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103994262] [2022-07-13 19:54:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:21,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:21,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:21,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:54:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:54:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:21,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:54:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:21,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:54:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:21,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:21,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103994262] [2022-07-13 19:54:21,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103994262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:21,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:21,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:21,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007594144] [2022-07-13 19:54:21,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:21,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:21,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:21,738 INFO L87 Difference]: Start difference. First operand 2823 states and 5069 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:25,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:25,133 INFO L93 Difference]: Finished difference Result 4265 states and 7403 transitions. [2022-07-13 19:54:25,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:54:25,136 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-13 19:54:25,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:25,154 INFO L225 Difference]: With dead ends: 4265 [2022-07-13 19:54:25,154 INFO L226 Difference]: Without dead ends: 3582 [2022-07-13 19:54:25,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:54:25,160 INFO L413 NwaCegarLoop]: 4895 mSDtfsCounter, 5420 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2905 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5438 SdHoareTripleChecker+Valid, 22471 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:25,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5438 Valid, 22471 Invalid, 2978 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 2905 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 19:54:25,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2022-07-13 19:54:25,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3148. [2022-07-13 19:54:25,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3061 states have (on average 1.7775236850702385) internal successors, (5441), 3065 states have internal predecessors, (5441), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-13 19:54:25,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5576 transitions. [2022-07-13 19:54:25,278 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5576 transitions. Word has length 167 [2022-07-13 19:54:25,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:25,278 INFO L495 AbstractCegarLoop]: Abstraction has 3148 states and 5576 transitions. [2022-07-13 19:54:25,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:25,279 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5576 transitions. [2022-07-13 19:54:25,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:54:25,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:25,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:25,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 19:54:25,282 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:25,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:25,283 INFO L85 PathProgramCache]: Analyzing trace with hash -574019052, now seen corresponding path program 1 times [2022-07-13 19:54:25,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:25,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105842244] [2022-07-13 19:54:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:25,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:25,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:54:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:25,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:54:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:54:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:54:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:25,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:25,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105842244] [2022-07-13 19:54:25,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105842244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:25,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:25,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:25,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486827478] [2022-07-13 19:54:25,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:25,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:25,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:25,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:25,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:25,427 INFO L87 Difference]: Start difference. First operand 3148 states and 5576 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:28,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:28,450 INFO L93 Difference]: Finished difference Result 5515 states and 9398 transitions. [2022-07-13 19:54:28,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:54:28,450 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-13 19:54:28,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:28,471 INFO L225 Difference]: With dead ends: 5515 [2022-07-13 19:54:28,471 INFO L226 Difference]: Without dead ends: 4507 [2022-07-13 19:54:28,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:54:28,478 INFO L413 NwaCegarLoop]: 4887 mSDtfsCounter, 5417 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5435 SdHoareTripleChecker+Valid, 22463 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:28,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5435 Valid, 22463 Invalid, 2983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 19:54:28,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2022-07-13 19:54:28,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 3799. [2022-07-13 19:54:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3658 states have (on average 1.7419354838709677) internal successors, (6372), 3664 states have internal predecessors, (6372), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-13 19:54:28,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 6595 transitions. [2022-07-13 19:54:28,636 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 6595 transitions. Word has length 167 [2022-07-13 19:54:28,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:28,637 INFO L495 AbstractCegarLoop]: Abstraction has 3799 states and 6595 transitions. [2022-07-13 19:54:28,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:28,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 6595 transitions. [2022-07-13 19:54:28,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:54:28,646 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:28,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:28,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 19:54:28,646 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:28,647 INFO L85 PathProgramCache]: Analyzing trace with hash -147464554, now seen corresponding path program 1 times [2022-07-13 19:54:28,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:28,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842687581] [2022-07-13 19:54:28,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:28,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:28,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:54:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:54:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:28,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:54:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:54:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:28,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:28,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:28,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842687581] [2022-07-13 19:54:28,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842687581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:28,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:28,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:28,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948615225] [2022-07-13 19:54:28,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:28,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:28,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:28,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:28,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:28,822 INFO L87 Difference]: Start difference. First operand 3799 states and 6595 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:32,095 INFO L93 Difference]: Finished difference Result 7918 states and 13209 transitions. [2022-07-13 19:54:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:54:32,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-13 19:54:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:32,126 INFO L225 Difference]: With dead ends: 7918 [2022-07-13 19:54:32,126 INFO L226 Difference]: Without dead ends: 6259 [2022-07-13 19:54:32,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:54:32,137 INFO L413 NwaCegarLoop]: 4883 mSDtfsCounter, 5413 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5431 SdHoareTripleChecker+Valid, 22459 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:32,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5431 Valid, 22459 Invalid, 2978 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 19:54:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2022-07-13 19:54:32,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 5102. [2022-07-13 19:54:32,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 4853 states have (on average 1.6966824644549763) internal successors, (8234), 4863 states have internal predecessors, (8234), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-13 19:54:32,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 8639 transitions. [2022-07-13 19:54:32,419 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 8639 transitions. Word has length 167 [2022-07-13 19:54:32,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:32,420 INFO L495 AbstractCegarLoop]: Abstraction has 5102 states and 8639 transitions. [2022-07-13 19:54:32,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:32,420 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 8639 transitions. [2022-07-13 19:54:32,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:54:32,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:32,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:32,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 19:54:32,425 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:32,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:32,425 INFO L85 PathProgramCache]: Analyzing trace with hash -687894060, now seen corresponding path program 1 times [2022-07-13 19:54:32,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:32,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945702937] [2022-07-13 19:54:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:32,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:32,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:32,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:54:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:32,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:54:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:32,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:54:32,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:32,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:54:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:32,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:32,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945702937] [2022-07-13 19:54:32,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945702937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:32,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:32,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:32,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545414575] [2022-07-13 19:54:32,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:32,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:32,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:32,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:32,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:32,589 INFO L87 Difference]: Start difference. First operand 5102 states and 8639 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:35,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:35,947 INFO L93 Difference]: Finished difference Result 12723 states and 20847 transitions. [2022-07-13 19:54:35,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:54:35,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-13 19:54:35,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:35,993 INFO L225 Difference]: With dead ends: 12723 [2022-07-13 19:54:35,993 INFO L226 Difference]: Without dead ends: 9761 [2022-07-13 19:54:36,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:54:36,007 INFO L413 NwaCegarLoop]: 4879 mSDtfsCounter, 5409 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22455 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:36,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5427 Valid, 22455 Invalid, 2973 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 19:54:36,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2022-07-13 19:54:36,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 7713. [2022-07-13 19:54:36,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7713 states, 7248 states have (on average 1.650662251655629) internal successors, (11964), 7266 states have internal predecessors, (11964), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-13 19:54:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 12751 transitions. [2022-07-13 19:54:36,426 INFO L78 Accepts]: Start accepts. Automaton has 7713 states and 12751 transitions. Word has length 167 [2022-07-13 19:54:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:36,427 INFO L495 AbstractCegarLoop]: Abstraction has 7713 states and 12751 transitions. [2022-07-13 19:54:36,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 7713 states and 12751 transitions. [2022-07-13 19:54:36,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:54:36,432 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:36,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:36,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 19:54:36,433 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:36,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:36,434 INFO L85 PathProgramCache]: Analyzing trace with hash -843874602, now seen corresponding path program 1 times [2022-07-13 19:54:36,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:36,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445274629] [2022-07-13 19:54:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:36,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:36,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:54:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:54:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:36,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:54:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:54:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:36,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:36,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:36,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445274629] [2022-07-13 19:54:36,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445274629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:36,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:36,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:36,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878480143] [2022-07-13 19:54:36,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:36,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:36,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:36,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:36,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:36,587 INFO L87 Difference]: Start difference. First operand 7713 states and 12751 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:40,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:40,237 INFO L93 Difference]: Finished difference Result 22332 states and 36181 transitions. [2022-07-13 19:54:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:54:40,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-13 19:54:40,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:40,297 INFO L225 Difference]: With dead ends: 22332 [2022-07-13 19:54:40,298 INFO L226 Difference]: Without dead ends: 16759 [2022-07-13 19:54:40,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:54:40,321 INFO L413 NwaCegarLoop]: 4873 mSDtfsCounter, 5408 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 22449 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:40,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5426 Valid, 22449 Invalid, 2968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 19:54:40,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16759 states. [2022-07-13 19:54:41,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16759 to 12948. [2022-07-13 19:54:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.613310098746992) internal successors, (19442), 12085 states have internal predecessors, (19442), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-13 19:54:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21047 transitions. [2022-07-13 19:54:41,116 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21047 transitions. Word has length 167 [2022-07-13 19:54:41,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:41,116 INFO L495 AbstractCegarLoop]: Abstraction has 12948 states and 21047 transitions. [2022-07-13 19:54:41,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:41,117 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21047 transitions. [2022-07-13 19:54:41,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:54:41,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:41,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:41,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 19:54:41,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:41,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:41,126 INFO L85 PathProgramCache]: Analyzing trace with hash -433264236, now seen corresponding path program 1 times [2022-07-13 19:54:41,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:41,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787390600] [2022-07-13 19:54:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:41,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:41,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:41,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:54:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:41,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:54:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:41,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:54:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:54:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:41,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:41,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:41,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787390600] [2022-07-13 19:54:41,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787390600] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:41,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:41,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:41,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763414471] [2022-07-13 19:54:41,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:41,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:41,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:41,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:41,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:41,264 INFO L87 Difference]: Start difference. First operand 12948 states and 21047 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:43,759 INFO L93 Difference]: Finished difference Result 27774 states and 45096 transitions. [2022-07-13 19:54:43,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 19:54:43,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-13 19:54:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:43,829 INFO L225 Difference]: With dead ends: 27774 [2022-07-13 19:54:43,830 INFO L226 Difference]: Without dead ends: 16966 [2022-07-13 19:54:43,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:54:43,867 INFO L413 NwaCegarLoop]: 4542 mSDtfsCounter, 4998 mSDsluCounter, 16699 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 21241 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:43,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5017 Valid, 21241 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 19:54:43,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16966 states. [2022-07-13 19:54:44,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16966 to 12948. [2022-07-13 19:54:44,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.610571736785329) internal successors, (19409), 12085 states have internal predecessors, (19409), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-13 19:54:44,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21014 transitions. [2022-07-13 19:54:44,659 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21014 transitions. Word has length 167 [2022-07-13 19:54:44,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:44,660 INFO L495 AbstractCegarLoop]: Abstraction has 12948 states and 21014 transitions. [2022-07-13 19:54:44,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:44,660 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21014 transitions. [2022-07-13 19:54:44,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:54:44,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:44,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:44,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 19:54:44,670 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:44,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:44,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1725819858, now seen corresponding path program 1 times [2022-07-13 19:54:44,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:44,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638599473] [2022-07-13 19:54:44,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:44,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:44,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:44,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:54:44,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:44,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:54:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:44,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:54:44,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:44,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:54:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:44,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:44,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638599473] [2022-07-13 19:54:44,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638599473] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:44,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:44,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:44,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818975933] [2022-07-13 19:54:44,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:44,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:44,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:44,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:44,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:44,909 INFO L87 Difference]: Start difference. First operand 12948 states and 21014 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:49,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:49,750 INFO L93 Difference]: Finished difference Result 41484 states and 66747 transitions. [2022-07-13 19:54:49,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:54:49,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-13 19:54:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:49,877 INFO L225 Difference]: With dead ends: 41484 [2022-07-13 19:54:49,877 INFO L226 Difference]: Without dead ends: 30676 [2022-07-13 19:54:49,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:54:49,915 INFO L413 NwaCegarLoop]: 4859 mSDtfsCounter, 5396 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2850 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5414 SdHoareTripleChecker+Valid, 22435 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:49,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5414 Valid, 22435 Invalid, 2930 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2850 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 19:54:49,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30676 states. [2022-07-13 19:54:51,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30676 to 23513. [2022-07-13 19:54:51,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23513 states, 21752 states have (on average 1.5849117322545054) internal successors, (34475), 21818 states have internal predecessors, (34475), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-07-13 19:54:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23513 states to 23513 states and 37878 transitions. [2022-07-13 19:54:51,481 INFO L78 Accepts]: Start accepts. Automaton has 23513 states and 37878 transitions. Word has length 167 [2022-07-13 19:54:51,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:54:51,482 INFO L495 AbstractCegarLoop]: Abstraction has 23513 states and 37878 transitions. [2022-07-13 19:54:51,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:51,482 INFO L276 IsEmpty]: Start isEmpty. Operand 23513 states and 37878 transitions. [2022-07-13 19:54:51,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:54:51,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:54:51,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:54:51,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 19:54:51,497 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:54:51,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:54:51,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1795467732, now seen corresponding path program 1 times [2022-07-13 19:54:51,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:54:51,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576617540] [2022-07-13 19:54:51,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:54:51,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:54:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:51,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:54:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:51,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:54:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:51,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:54:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:51,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:54:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:51,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:54:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:54:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:54:51,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:54:51,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576617540] [2022-07-13 19:54:51,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576617540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:54:51,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:54:51,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:54:51,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145804961] [2022-07-13 19:54:51,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:54:51,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:54:51,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:54:51,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:54:51,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:54:51,662 INFO L87 Difference]: Start difference. First operand 23513 states and 37878 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:54:58,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:54:58,116 INFO L93 Difference]: Finished difference Result 79923 states and 128881 transitions. [2022-07-13 19:54:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:54:58,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-13 19:54:58,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:54:58,349 INFO L225 Difference]: With dead ends: 79923 [2022-07-13 19:54:58,350 INFO L226 Difference]: Without dead ends: 58550 [2022-07-13 19:54:58,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:54:58,412 INFO L413 NwaCegarLoop]: 4854 mSDtfsCounter, 5395 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 22430 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:54:58,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5413 Valid, 22430 Invalid, 2922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2842 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 19:54:58,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58550 states. [2022-07-13 19:55:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58550 to 44702. [2022-07-13 19:55:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44702 states, 41213 states have (on average 1.5697231456093952) internal successors, (64693), 41343 states have internal predecessors, (64693), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-07-13 19:55:01,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44702 states to 44702 states and 72178 transitions. [2022-07-13 19:55:01,468 INFO L78 Accepts]: Start accepts. Automaton has 44702 states and 72178 transitions. Word has length 167 [2022-07-13 19:55:01,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:01,468 INFO L495 AbstractCegarLoop]: Abstraction has 44702 states and 72178 transitions. [2022-07-13 19:55:01,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:55:01,468 INFO L276 IsEmpty]: Start isEmpty. Operand 44702 states and 72178 transitions. [2022-07-13 19:55:01,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:55:01,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:01,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:01,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 19:55:01,495 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:01,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:01,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2081610862, now seen corresponding path program 1 times [2022-07-13 19:55:01,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:01,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315090499] [2022-07-13 19:55:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:01,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:01,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:01,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:55:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:01,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:55:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:01,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:55:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:55:01,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:01,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315090499] [2022-07-13 19:55:01,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315090499] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:01,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:55:01,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:55:01,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969793730] [2022-07-13 19:55:01,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:01,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:55:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:01,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:55:01,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:55:01,644 INFO L87 Difference]: Start difference. First operand 44702 states and 72178 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:55:12,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:12,279 INFO L93 Difference]: Finished difference Result 156798 states and 254991 transitions. [2022-07-13 19:55:12,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 19:55:12,280 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-13 19:55:12,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:12,767 INFO L225 Difference]: With dead ends: 156798 [2022-07-13 19:55:12,767 INFO L226 Difference]: Without dead ends: 114236 [2022-07-13 19:55:12,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-13 19:55:12,896 INFO L413 NwaCegarLoop]: 4849 mSDtfsCounter, 5394 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5412 SdHoareTripleChecker+Valid, 22425 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:12,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5412 Valid, 22425 Invalid, 2914 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2834 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 19:55:12,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114236 states. [2022-07-13 19:55:19,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114236 to 87207. [2022-07-13 19:55:19,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87207 states, 80262 states have (on average 1.5613740001495104) internal successors, (125319), 80520 states have internal predecessors, (125319), 5145 states have call successors, (5145), 1542 states have call predecessors, (5145), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-13 19:55:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87207 states to 87207 states and 142426 transitions. [2022-07-13 19:55:19,584 INFO L78 Accepts]: Start accepts. Automaton has 87207 states and 142426 transitions. Word has length 167 [2022-07-13 19:55:19,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:19,585 INFO L495 AbstractCegarLoop]: Abstraction has 87207 states and 142426 transitions. [2022-07-13 19:55:19,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:55:19,585 INFO L276 IsEmpty]: Start isEmpty. Operand 87207 states and 142426 transitions. [2022-07-13 19:55:19,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:55:19,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:19,624 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:19,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 19:55:19,625 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:19,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:19,626 INFO L85 PathProgramCache]: Analyzing trace with hash -682657260, now seen corresponding path program 1 times [2022-07-13 19:55:19,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:19,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592033478] [2022-07-13 19:55:19,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:19,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:19,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:19,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:55:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:19,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:55:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:19,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:55:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:55:19,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592033478] [2022-07-13 19:55:19,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592033478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:19,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:55:19,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:55:19,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330883232] [2022-07-13 19:55:19,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:19,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:55:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:19,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:55:19,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:55:19,770 INFO L87 Difference]: Start difference. First operand 87207 states and 142426 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:55:30,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:55:30,068 INFO L93 Difference]: Finished difference Result 200924 states and 334667 transitions. [2022-07-13 19:55:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 19:55:30,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-07-13 19:55:30,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:55:30,639 INFO L225 Difference]: With dead ends: 200924 [2022-07-13 19:55:30,639 INFO L226 Difference]: Without dead ends: 115857 [2022-07-13 19:55:30,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-13 19:55:30,791 INFO L413 NwaCegarLoop]: 4529 mSDtfsCounter, 5153 mSDsluCounter, 12560 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 17089 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 19:55:30,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5172 Valid, 17089 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 19:55:30,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115857 states. [2022-07-13 19:55:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115857 to 87207. [2022-07-13 19:55:37,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87207 states, 80262 states have (on average 1.5581719867434154) internal successors, (125062), 80520 states have internal predecessors, (125062), 5145 states have call successors, (5145), 1542 states have call predecessors, (5145), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-13 19:55:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87207 states to 87207 states and 142169 transitions. [2022-07-13 19:55:37,519 INFO L78 Accepts]: Start accepts. Automaton has 87207 states and 142169 transitions. Word has length 167 [2022-07-13 19:55:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:55:37,520 INFO L495 AbstractCegarLoop]: Abstraction has 87207 states and 142169 transitions. [2022-07-13 19:55:37,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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) [2022-07-13 19:55:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 87207 states and 142169 transitions. [2022-07-13 19:55:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-13 19:55:37,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:55:37,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:55:37,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 19:55:37,569 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:55:37,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:55:37,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1994869586, now seen corresponding path program 1 times [2022-07-13 19:55:37,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:55:37,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836385754] [2022-07-13 19:55:37,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:55:37,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:55:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 19:55:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:55:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 19:55:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:55:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 19:55:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:55:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 19:55:37,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:55:37,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836385754] [2022-07-13 19:55:37,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836385754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:55:37,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:55:37,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 19:55:37,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103777285] [2022-07-13 19:55:37,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:55:37,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 19:55:37,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:55:37,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 19:55:37,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 19:55:37,711 INFO L87 Difference]: Start difference. First operand 87207 states and 142169 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 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)