./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-1.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 257fbefed94a1e5b18da17b648f63b8a4a376ab6bd67ba2a090c30b5997c5667 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 08:13:45,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 08:13:45,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 08:13:45,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 08:13:45,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 08:13:45,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 08:13:45,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 08:13:45,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 08:13:45,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 08:13:45,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 08:13:45,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 08:13:45,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 08:13:45,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 08:13:45,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 08:13:45,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 08:13:45,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 08:13:45,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 08:13:45,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 08:13:45,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 08:13:45,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 08:13:45,975 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 08:13:45,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 08:13:45,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 08:13:45,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 08:13:45,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 08:13:45,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 08:13:45,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 08:13:45,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 08:13:45,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 08:13:45,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 08:13:45,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 08:13:45,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 08:13:45,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 08:13:45,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 08:13:45,984 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 08:13:45,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 08:13:45,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 08:13:45,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 08:13:45,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 08:13:45,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 08:13:45,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 08:13:45,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 08:13:45,987 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 08:13:46,002 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 08:13:46,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 08:13:46,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 08:13:46,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 08:13:46,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 08:13:46,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 08:13:46,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 08:13:46,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 08:13:46,004 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 08:13:46,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 08:13:46,004 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 08:13:46,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 08:13:46,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 08:13:46,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 08:13:46,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 08:13:46,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 08:13:46,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 08:13:46,005 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 08:13:46,005 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 08:13:46,006 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 08:13:46,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 08:13:46,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 08:13:46,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 08:13:46,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 08:13:46,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:13:46,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 08:13:46,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 08:13:46,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 08:13:46,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 08:13:46,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 08:13:46,008 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 08:13:46,008 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 08:13:46,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 08:13:46,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 257fbefed94a1e5b18da17b648f63b8a4a376ab6bd67ba2a090c30b5997c5667 [2022-07-12 08:13:46,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 08:13:46,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 08:13:46,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 08:13:46,248 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 08:13:46,249 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 08:13:46,250 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c [2022-07-12 08:13:46,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724a3d90a/e1dfcc8750614d7cba625572eedefbe6/FLAG502552708 [2022-07-12 08:13:47,088 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 08:13:47,089 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-1.c [2022-07-12 08:13:47,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724a3d90a/e1dfcc8750614d7cba625572eedefbe6/FLAG502552708 [2022-07-12 08:13:47,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/724a3d90a/e1dfcc8750614d7cba625572eedefbe6 [2022-07-12 08:13:47,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 08:13:47,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 08:13:47,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 08:13:47,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 08:13:47,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 08:13:47,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:13:47" (1/1) ... [2022-07-12 08:13:47,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b39ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:47, skipping insertion in model container [2022-07-12 08:13:47,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 08:13:47" (1/1) ... [2022-07-12 08:13:47,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 08:13:47,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 08:13:48,801 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-1.c[378560,378573] [2022-07-12 08:13:48,832 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-1.c[383339,383352] [2022-07-12 08:13:49,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:13:49,071 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 08:13:49,706 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-1.c[378560,378573] [2022-07-12 08:13:49,714 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-1.c[383339,383352] [2022-07-12 08:13:49,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 08:13:49,787 INFO L208 MainTranslator]: Completed translation [2022-07-12 08:13:49,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:49 WrapperNode [2022-07-12 08:13:49,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 08:13:49,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 08:13:49,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 08:13:49,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 08:13:49,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:49" (1/1) ... [2022-07-12 08:13:49,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:49" (1/1) ... [2022-07-12 08:13:50,122 INFO L137 Inliner]: procedures = 66, calls = 75, calls flagged for inlining = 43, calls inlined = 43, statements flattened = 13146 [2022-07-12 08:13:50,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 08:13:50,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 08:13:50,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 08:13:50,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 08:13:50,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:49" (1/1) ... [2022-07-12 08:13:50,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:49" (1/1) ... [2022-07-12 08:13:50,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:49" (1/1) ... [2022-07-12 08:13:50,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:49" (1/1) ... [2022-07-12 08:13:50,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:49" (1/1) ... [2022-07-12 08:13:50,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:49" (1/1) ... [2022-07-12 08:13:50,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:49" (1/1) ... [2022-07-12 08:13:50,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 08:13:50,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 08:13:50,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 08:13:50,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 08:13:50,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:49" (1/1) ... [2022-07-12 08:13:50,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 08:13:50,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 08:13:50,633 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) [2022-07-12 08:13:50,692 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 [2022-07-12 08:13:50,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 08:13:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 08:13:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 08:13:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 08:13:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 08:13:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 08:13:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 08:13:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-12 08:13:50,727 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-12 08:13:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 08:13:50,727 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 08:13:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 08:13:50,727 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 08:13:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 08:13:50,727 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 08:13:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 08:13:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 08:13:50,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 08:13:50,941 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 08:13:50,942 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 08:13:55,886 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 08:13:55,912 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 08:13:55,912 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-12 08:13:55,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:13:55 BoogieIcfgContainer [2022-07-12 08:13:55,918 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 08:13:55,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 08:13:55,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 08:13:55,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 08:13:55,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 08:13:47" (1/3) ... [2022-07-12 08:13:55,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39658593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:13:55, skipping insertion in model container [2022-07-12 08:13:55,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 08:13:49" (2/3) ... [2022-07-12 08:13:55,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39658593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 08:13:55, skipping insertion in model container [2022-07-12 08:13:55,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 08:13:55" (3/3) ... [2022-07-12 08:13:55,926 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.11.cil-1.c [2022-07-12 08:13:55,936 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 08:13:55,936 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 08:13:56,014 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 08:13:56,019 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@3c923643, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@48866226 [2022-07-12 08:13:56,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 08:13:56,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-12 08:13:56,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:13:56,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:56,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:56,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:56,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:56,050 INFO L85 PathProgramCache]: Analyzing trace with hash 563980701, now seen corresponding path program 1 times [2022-07-12 08:13:56,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:56,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631084814] [2022-07-12 08:13:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:56,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:56,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:56,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:13:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:13:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:13:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:56,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:13:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:56,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:56,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631084814] [2022-07-12 08:13:56,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631084814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:56,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:56,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 08:13:56,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942940432] [2022-07-12 08:13:56,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:56,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 08:13:56,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:56,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 08:13:56,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 08:13:56,531 INFO L87 Difference]: Start difference. First operand has 2548 states, 2511 states have (on average 1.8446833930704898) internal successors, (4632), 2516 states have internal predecessors, (4632), 27 states have call successors, (27), 7 states have call predecessors, (27), 7 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:57,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:13:57,905 INFO L93 Difference]: Finished difference Result 5214 states and 9575 transitions. [2022-07-12 08:13:57,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 08:13:57,920 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-12 08:13:57,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:13:57,944 INFO L225 Difference]: With dead ends: 5214 [2022-07-12 08:13:57,945 INFO L226 Difference]: Without dead ends: 2611 [2022-07-12 08:13:57,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 08:13:57,958 INFO L413 NwaCegarLoop]: 4649 mSDtfsCounter, 967 mSDsluCounter, 12457 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 17106 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:13:57,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 17106 Invalid, 732 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [62 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 08:13:57,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2022-07-12 08:13:58,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2480. [2022-07-12 08:13:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2445 states have (on average 1.8286298568507158) internal successors, (4471), 2448 states have internal predecessors, (4471), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-12 08:13:58,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 4523 transitions. [2022-07-12 08:13:58,071 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 4523 transitions. Word has length 168 [2022-07-12 08:13:58,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:13:58,071 INFO L495 AbstractCegarLoop]: Abstraction has 2480 states and 4523 transitions. [2022-07-12 08:13:58,072 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:13:58,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 4523 transitions. [2022-07-12 08:13:58,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:13:58,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:13:58,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:13:58,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 08:13:58,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:13:58,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:13:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1969172379, now seen corresponding path program 1 times [2022-07-12 08:13:58,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:13:58,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725665495] [2022-07-12 08:13:58,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:13:58,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:13:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:58,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:13:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:58,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:13:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:58,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:13:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:58,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:13:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:58,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:13:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:13:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:13:58,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:13:58,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725665495] [2022-07-12 08:13:58,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725665495] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:13:58,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:13:58,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 08:13:58,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763056551] [2022-07-12 08:13:58,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:13:58,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 08:13:58,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:13:58,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 08:13:58,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 08:13:58,219 INFO L87 Difference]: Start difference. First operand 2480 states and 4523 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:00,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:14:00,313 INFO L93 Difference]: Finished difference Result 3438 states and 6074 transitions. [2022-07-12 08:14:00,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 08:14:00,313 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-12 08:14:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:14:00,325 INFO L225 Difference]: With dead ends: 3438 [2022-07-12 08:14:00,326 INFO L226 Difference]: Without dead ends: 3098 [2022-07-12 08:14:00,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:14:00,330 INFO L413 NwaCegarLoop]: 4628 mSDtfsCounter, 5411 mSDsluCounter, 12793 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5429 SdHoareTripleChecker+Valid, 17421 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 08:14:00,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5429 Valid, 17421 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1873 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 08:14:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3098 states. [2022-07-12 08:14:00,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3098 to 2835. [2022-07-12 08:14:00,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2835 states, 2773 states have (on average 1.8016588532275515) internal successors, (4996), 2777 states have internal predecessors, (4996), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-07-12 08:14:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 5091 transitions. [2022-07-12 08:14:00,408 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 5091 transitions. Word has length 168 [2022-07-12 08:14:00,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:14:00,408 INFO L495 AbstractCegarLoop]: Abstraction has 2835 states and 5091 transitions. [2022-07-12 08:14:00,409 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 5091 transitions. [2022-07-12 08:14:00,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:14:00,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:14:00,411 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:14:00,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 08:14:00,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:14:00,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:14:00,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1403394409, now seen corresponding path program 1 times [2022-07-12 08:14:00,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:14:00,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494068137] [2022-07-12 08:14:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:14:00,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:14:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:00,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:14:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:00,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:14:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:00,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:14:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:14:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:00,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:14:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:14:00,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:14:00,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494068137] [2022-07-12 08:14:00,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494068137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:14:00,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:14:00,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:14:00,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473453000] [2022-07-12 08:14:00,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:14:00,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:14:00,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:14:00,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:14:00,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:14:00,525 INFO L87 Difference]: Start difference. First operand 2835 states and 5091 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:14:03,101 INFO L93 Difference]: Finished difference Result 4296 states and 7459 transitions. [2022-07-12 08:14:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:14:03,102 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-12 08:14:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:14:03,113 INFO L225 Difference]: With dead ends: 4296 [2022-07-12 08:14:03,113 INFO L226 Difference]: Without dead ends: 3601 [2022-07-12 08:14:03,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:14:03,116 INFO L413 NwaCegarLoop]: 4919 mSDtfsCounter, 5434 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5452 SdHoareTripleChecker+Valid, 22578 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:14:03,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5452 Valid, 22578 Invalid, 2995 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 08:14:03,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2022-07-12 08:14:03,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3165. [2022-07-12 08:14:03,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3076 states have (on average 1.7786085825747724) internal successors, (5471), 3081 states have internal predecessors, (5471), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-12 08:14:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 5608 transitions. [2022-07-12 08:14:03,189 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 5608 transitions. Word has length 168 [2022-07-12 08:14:03,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:14:03,189 INFO L495 AbstractCegarLoop]: Abstraction has 3165 states and 5608 transitions. [2022-07-12 08:14:03,189 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:03,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 5608 transitions. [2022-07-12 08:14:03,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:14:03,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:14:03,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:14:03,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 08:14:03,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:14:03,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:14:03,192 INFO L85 PathProgramCache]: Analyzing trace with hash 493585049, now seen corresponding path program 1 times [2022-07-12 08:14:03,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:14:03,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876870004] [2022-07-12 08:14:03,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:14:03,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:14:03,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:03,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:14:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:03,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:14:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:03,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:14:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:03,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:14:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:03,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:14:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:14:03,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:14:03,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876870004] [2022-07-12 08:14:03,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876870004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:14:03,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:14:03,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:14:03,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954643484] [2022-07-12 08:14:03,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:14:03,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:14:03,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:14:03,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:14:03,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:14:03,312 INFO L87 Difference]: Start difference. First operand 3165 states and 5608 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:14:06,047 INFO L93 Difference]: Finished difference Result 5561 states and 9484 transitions. [2022-07-12 08:14:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:14:06,048 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-12 08:14:06,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:14:06,065 INFO L225 Difference]: With dead ends: 5561 [2022-07-12 08:14:06,066 INFO L226 Difference]: Without dead ends: 4536 [2022-07-12 08:14:06,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:14:06,070 INFO L413 NwaCegarLoop]: 4911 mSDtfsCounter, 5431 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2920 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5449 SdHoareTripleChecker+Valid, 22570 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:14:06,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5449 Valid, 22570 Invalid, 3000 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2920 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 08:14:06,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2022-07-12 08:14:06,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 3826. [2022-07-12 08:14:06,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3683 states have (on average 1.743687211512354) internal successors, (6422), 3690 states have internal predecessors, (6422), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-12 08:14:06,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 6647 transitions. [2022-07-12 08:14:06,185 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 6647 transitions. Word has length 168 [2022-07-12 08:14:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:14:06,190 INFO L495 AbstractCegarLoop]: Abstraction has 3826 states and 6647 transitions. [2022-07-12 08:14:06,191 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 6647 transitions. [2022-07-12 08:14:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:14:06,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:14:06,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:14:06,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 08:14:06,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:14:06,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:14:06,194 INFO L85 PathProgramCache]: Analyzing trace with hash 831872599, now seen corresponding path program 1 times [2022-07-12 08:14:06,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:14:06,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907378939] [2022-07-12 08:14:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:14:06,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:14:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:14:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:06,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:14:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:14:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:14:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:14:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:14:06,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:14:06,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907378939] [2022-07-12 08:14:06,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907378939] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:14:06,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:14:06,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:14:06,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552543262] [2022-07-12 08:14:06,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:14:06,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:14:06,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:14:06,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:14:06,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:14:06,323 INFO L87 Difference]: Start difference. First operand 3826 states and 6647 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:14:09,130 INFO L93 Difference]: Finished difference Result 7994 states and 13355 transitions. [2022-07-12 08:14:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:14:09,130 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-12 08:14:09,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:14:09,153 INFO L225 Difference]: With dead ends: 7994 [2022-07-12 08:14:09,153 INFO L226 Difference]: Without dead ends: 6308 [2022-07-12 08:14:09,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:14:09,160 INFO L413 NwaCegarLoop]: 4907 mSDtfsCounter, 5427 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2915 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5445 SdHoareTripleChecker+Valid, 22566 SdHoareTripleChecker+Invalid, 2995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:14:09,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5445 Valid, 22566 Invalid, 2995 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2915 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 08:14:09,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6308 states. [2022-07-12 08:14:09,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6308 to 5149. [2022-07-12 08:14:09,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5149 states, 4898 states have (on average 1.699469171090241) internal successors, (8324), 4909 states have internal predecessors, (8324), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-12 08:14:09,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5149 states to 5149 states and 8731 transitions. [2022-07-12 08:14:09,382 INFO L78 Accepts]: Start accepts. Automaton has 5149 states and 8731 transitions. Word has length 168 [2022-07-12 08:14:09,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:14:09,382 INFO L495 AbstractCegarLoop]: Abstraction has 5149 states and 8731 transitions. [2022-07-12 08:14:09,383 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:09,383 INFO L276 IsEmpty]: Start isEmpty. Operand 5149 states and 8731 transitions. [2022-07-12 08:14:09,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:14:09,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:14:09,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:14:09,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 08:14:09,386 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:14:09,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:14:09,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1258427097, now seen corresponding path program 1 times [2022-07-12 08:14:09,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:14:09,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562514867] [2022-07-12 08:14:09,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:14:09,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:14:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:14:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:09,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:14:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:09,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:14:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:14:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:09,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:14:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:14:09,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:14:09,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562514867] [2022-07-12 08:14:09,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562514867] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:14:09,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:14:09,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:14:09,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095662100] [2022-07-12 08:14:09,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:14:09,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:14:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:14:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:14:09,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:14:09,521 INFO L87 Difference]: Start difference. First operand 5149 states and 8731 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:12,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:14:12,456 INFO L93 Difference]: Finished difference Result 12859 states and 21113 transitions. [2022-07-12 08:14:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:14:12,459 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-12 08:14:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:14:12,489 INFO L225 Difference]: With dead ends: 12859 [2022-07-12 08:14:12,490 INFO L226 Difference]: Without dead ends: 9850 [2022-07-12 08:14:12,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:14:12,502 INFO L413 NwaCegarLoop]: 4903 mSDtfsCounter, 5423 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2910 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5441 SdHoareTripleChecker+Valid, 22562 SdHoareTripleChecker+Invalid, 2990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:14:12,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5441 Valid, 22562 Invalid, 2990 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [80 Valid, 2910 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 08:14:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9850 states. [2022-07-12 08:14:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9850 to 7800. [2022-07-12 08:14:12,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7800 states, 7333 states have (on average 1.654711577798991) internal successors, (12134), 7352 states have internal predecessors, (12134), 347 states have call successors, (347), 103 states have call predecessors, (347), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-12 08:14:12,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7800 states to 7800 states and 12923 transitions. [2022-07-12 08:14:12,807 INFO L78 Accepts]: Start accepts. Automaton has 7800 states and 12923 transitions. Word has length 168 [2022-07-12 08:14:12,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:14:12,807 INFO L495 AbstractCegarLoop]: Abstraction has 7800 states and 12923 transitions. [2022-07-12 08:14:12,808 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:12,808 INFO L276 IsEmpty]: Start isEmpty. Operand 7800 states and 12923 transitions. [2022-07-12 08:14:12,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:14:12,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:14:12,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:14:12,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 08:14:12,812 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:14:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:14:12,812 INFO L85 PathProgramCache]: Analyzing trace with hash 717997591, now seen corresponding path program 1 times [2022-07-12 08:14:12,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:14:12,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839014341] [2022-07-12 08:14:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:14:12,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:14:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:12,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:14:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:12,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:14:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:14:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:12,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:14:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:12,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:14:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:14:12,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:14:12,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839014341] [2022-07-12 08:14:12,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839014341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:14:12,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:14:12,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:14:12,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477072043] [2022-07-12 08:14:12,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:14:12,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:14:12,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:14:12,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:14:12,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:14:12,918 INFO L87 Difference]: Start difference. First operand 7800 states and 12923 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:16,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:14:16,146 INFO L93 Difference]: Finished difference Result 22588 states and 36687 transitions. [2022-07-12 08:14:16,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:14:16,146 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-12 08:14:16,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:14:16,192 INFO L225 Difference]: With dead ends: 22588 [2022-07-12 08:14:16,192 INFO L226 Difference]: Without dead ends: 16928 [2022-07-12 08:14:16,212 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 [2022-07-12 08:14:16,213 INFO L413 NwaCegarLoop]: 4897 mSDtfsCounter, 5422 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5440 SdHoareTripleChecker+Valid, 22556 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:14:16,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5440 Valid, 22556 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 08:14:16,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16928 states. [2022-07-12 08:14:16,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16928 to 13115. [2022-07-12 08:14:16,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13115 states, 12216 states have (on average 1.6185330713817945) internal successors, (19772), 12251 states have internal predecessors, (19772), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-12 08:14:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13115 states to 13115 states and 21379 transitions. [2022-07-12 08:14:16,881 INFO L78 Accepts]: Start accepts. Automaton has 13115 states and 21379 transitions. Word has length 168 [2022-07-12 08:14:16,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:14:16,881 INFO L495 AbstractCegarLoop]: Abstraction has 13115 states and 21379 transitions. [2022-07-12 08:14:16,882 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 13115 states and 21379 transitions. [2022-07-12 08:14:16,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:14:16,889 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:14:16,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:14:16,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 08:14:16,892 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:14:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:14:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash 562017049, now seen corresponding path program 1 times [2022-07-12 08:14:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:14:16,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665589751] [2022-07-12 08:14:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:14:16,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:14:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:14:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:16,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:14:16,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:16,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:14:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:14:16,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:16,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:14:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:14:17,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:14:17,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665589751] [2022-07-12 08:14:17,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665589751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:14:17,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:14:17,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:14:17,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724882240] [2022-07-12 08:14:17,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:14:17,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:14:17,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:14:17,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:14:17,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:14:17,003 INFO L87 Difference]: Start difference. First operand 13115 states and 21379 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:19,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:14:19,059 INFO L93 Difference]: Finished difference Result 28108 states and 45760 transitions. [2022-07-12 08:14:19,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 08:14:19,060 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-12 08:14:19,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:14:19,107 INFO L225 Difference]: With dead ends: 28108 [2022-07-12 08:14:19,108 INFO L226 Difference]: Without dead ends: 17133 [2022-07-12 08:14:19,137 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 [2022-07-12 08:14:19,138 INFO L413 NwaCegarLoop]: 4554 mSDtfsCounter, 5167 mSDsluCounter, 12587 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5186 SdHoareTripleChecker+Valid, 17141 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:14:19,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5186 Valid, 17141 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 08:14:19,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17133 states. [2022-07-12 08:14:19,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17133 to 13115. [2022-07-12 08:14:19,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13115 states, 12216 states have (on average 1.6158316961362147) internal successors, (19739), 12251 states have internal predecessors, (19739), 667 states have call successors, (667), 199 states have call predecessors, (667), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-12 08:14:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13115 states to 13115 states and 21346 transitions. [2022-07-12 08:14:19,829 INFO L78 Accepts]: Start accepts. Automaton has 13115 states and 21346 transitions. Word has length 168 [2022-07-12 08:14:19,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:14:19,829 INFO L495 AbstractCegarLoop]: Abstraction has 13115 states and 21346 transitions. [2022-07-12 08:14:19,830 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:19,830 INFO L276 IsEmpty]: Start isEmpty. Operand 13115 states and 21346 transitions. [2022-07-12 08:14:19,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:14:19,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:14:19,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:14:19,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 08:14:19,839 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:14:19,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:14:19,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1225852773, now seen corresponding path program 1 times [2022-07-12 08:14:19,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:14:19,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943316010] [2022-07-12 08:14:19,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:14:19,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:14:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:14:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:19,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:14:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:19,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:14:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:14:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:14:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:14:19,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:14:19,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943316010] [2022-07-12 08:14:19,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943316010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:14:19,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:14:19,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:14:19,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742957547] [2022-07-12 08:14:19,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:14:19,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:14:19,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:14:19,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:14:19,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:14:19,953 INFO L87 Difference]: Start difference. First operand 13115 states and 21346 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:23,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:14:23,958 INFO L93 Difference]: Finished difference Result 41980 states and 67733 transitions. [2022-07-12 08:14:23,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:14:23,958 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-12 08:14:23,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:14:24,043 INFO L225 Difference]: With dead ends: 41980 [2022-07-12 08:14:24,044 INFO L226 Difference]: Without dead ends: 31005 [2022-07-12 08:14:24,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:14:24,071 INFO L413 NwaCegarLoop]: 4883 mSDtfsCounter, 5410 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2863 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5428 SdHoareTripleChecker+Valid, 22542 SdHoareTripleChecker+Invalid, 2947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 08:14:24,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5428 Valid, 22542 Invalid, 2947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2863 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 08:14:24,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31005 states. [2022-07-12 08:14:25,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31005 to 23840. [2022-07-12 08:14:25,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23840 states, 22077 states have (on average 1.5910223309326448) internal successors, (35125), 22144 states have internal predecessors, (35125), 1307 states have call successors, (1307), 391 states have call predecessors, (1307), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-07-12 08:14:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23840 states to 23840 states and 38530 transitions. [2022-07-12 08:14:25,535 INFO L78 Accepts]: Start accepts. Automaton has 23840 states and 38530 transitions. Word has length 168 [2022-07-12 08:14:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:14:25,536 INFO L495 AbstractCegarLoop]: Abstraction has 23840 states and 38530 transitions. [2022-07-12 08:14:25,536 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 23840 states and 38530 transitions. [2022-07-12 08:14:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:14:25,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:14:25,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:14:25,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 08:14:25,549 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:14:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:14:25,549 INFO L85 PathProgramCache]: Analyzing trace with hash 933231321, now seen corresponding path program 1 times [2022-07-12 08:14:25,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:14:25,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814886190] [2022-07-12 08:14:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:14:25,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:14:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:25,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:14:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:25,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:14:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:14:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:25,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:14:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:25,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:14:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:25,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:14:25,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:14:25,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814886190] [2022-07-12 08:14:25,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814886190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:14:25,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:14:25,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:14:25,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847475078] [2022-07-12 08:14:25,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:14:25,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:14:25,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:14:25,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:14:25,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:14:25,671 INFO L87 Difference]: Start difference. First operand 23840 states and 38530 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:31,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:14:31,746 INFO L93 Difference]: Finished difference Result 80899 states and 130827 transitions. [2022-07-12 08:14:31,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:14:31,747 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-12 08:14:31,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:14:31,944 INFO L225 Difference]: With dead ends: 80899 [2022-07-12 08:14:31,944 INFO L226 Difference]: Without dead ends: 59199 [2022-07-12 08:14:31,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 08:14:32,000 INFO L413 NwaCegarLoop]: 4878 mSDtfsCounter, 5409 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22537 SdHoareTripleChecker+Invalid, 2939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 08:14:32,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5427 Valid, 22537 Invalid, 2939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 08:14:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59199 states. [2022-07-12 08:14:35,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59199 to 45349. [2022-07-12 08:14:35,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45349 states, 41858 states have (on average 1.5763533852549094) internal successors, (65983), 41989 states have internal predecessors, (65983), 2587 states have call successors, (2587), 775 states have call predecessors, (2587), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-07-12 08:14:35,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45349 states to 45349 states and 73470 transitions. [2022-07-12 08:14:35,397 INFO L78 Accepts]: Start accepts. Automaton has 45349 states and 73470 transitions. Word has length 168 [2022-07-12 08:14:35,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:14:35,397 INFO L495 AbstractCegarLoop]: Abstraction has 45349 states and 73470 transitions. [2022-07-12 08:14:35,398 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:35,398 INFO L276 IsEmpty]: Start isEmpty. Operand 45349 states and 73470 transitions. [2022-07-12 08:14:35,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:14:35,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:14:35,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:14:35,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 08:14:35,421 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:14:35,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:14:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1002879195, now seen corresponding path program 1 times [2022-07-12 08:14:35,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:14:35,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501197194] [2022-07-12 08:14:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:14:35,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:14:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:35,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:14:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:35,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:14:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:14:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:35,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:14:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:35,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:14:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:14:35,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:14:35,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501197194] [2022-07-12 08:14:35,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501197194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:14:35,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:14:35,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:14:35,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011296321] [2022-07-12 08:14:35,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:14:35,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:14:35,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:14:35,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:14:35,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:14:35,533 INFO L87 Difference]: Start difference. First operand 45349 states and 73470 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:14:46,919 INFO L93 Difference]: Finished difference Result 158734 states and 258857 transitions. [2022-07-12 08:14:46,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 08:14:46,919 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-12 08:14:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:14:47,256 INFO L225 Difference]: With dead ends: 158734 [2022-07-12 08:14:47,256 INFO L226 Difference]: Without dead ends: 115525 [2022-07-12 08:14:47,347 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 [2022-07-12 08:14:47,348 INFO L413 NwaCegarLoop]: 4873 mSDtfsCounter, 5408 mSDsluCounter, 17659 mSDsCounter, 0 mSdLazyCounter, 2847 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 22532 SdHoareTripleChecker+Invalid, 2931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:14:47,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5426 Valid, 22532 Invalid, 2931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [84 Valid, 2847 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-12 08:14:47,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115525 states. [2022-07-12 08:14:53,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115525 to 88494. [2022-07-12 08:14:53,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88494 states, 81547 states have (on average 1.5682857738482103) internal successors, (127889), 81806 states have internal predecessors, (127889), 5147 states have call successors, (5147), 1543 states have call predecessors, (5147), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-12 08:14:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88494 states to 88494 states and 144998 transitions. [2022-07-12 08:14:53,638 INFO L78 Accepts]: Start accepts. Automaton has 88494 states and 144998 transitions. Word has length 168 [2022-07-12 08:14:53,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:14:53,639 INFO L495 AbstractCegarLoop]: Abstraction has 88494 states and 144998 transitions. [2022-07-12 08:14:53,639 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:14:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 88494 states and 144998 transitions. [2022-07-12 08:14:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:14:53,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:14:53,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:14:53,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 08:14:53,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:14:53,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:14:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1420767897, now seen corresponding path program 1 times [2022-07-12 08:14:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:14:53,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909384199] [2022-07-12 08:14:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:14:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:14:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:53,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:14:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:14:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:53,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:14:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:53,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:14:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:53,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:14:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:14:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:14:53,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:14:53,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909384199] [2022-07-12 08:14:53,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909384199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:14:53,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:14:53,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:14:53,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604706185] [2022-07-12 08:14:53,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:14:53,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:14:53,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:14:53,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:14:53,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:14:53,789 INFO L87 Difference]: Start difference. First operand 88494 states and 144998 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:15:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 08:15:04,232 INFO L93 Difference]: Finished difference Result 203498 states and 339811 transitions. [2022-07-12 08:15:04,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 08:15:04,233 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2022-07-12 08:15:04,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 08:15:04,821 INFO L225 Difference]: With dead ends: 203498 [2022-07-12 08:15:04,821 INFO L226 Difference]: Without dead ends: 117144 [2022-07-12 08:15:04,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 08:15:04,980 INFO L413 NwaCegarLoop]: 4541 mSDtfsCounter, 5013 mSDsluCounter, 16735 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5032 SdHoareTripleChecker+Valid, 21276 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 08:15:04,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5032 Valid, 21276 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 08:15:05,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117144 states. [2022-07-12 08:15:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117144 to 88494. [2022-07-12 08:15:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88494 states, 81547 states have (on average 1.5651342170772684) internal successors, (127632), 81806 states have internal predecessors, (127632), 5147 states have call successors, (5147), 1543 states have call predecessors, (5147), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-12 08:15:12,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88494 states to 88494 states and 144741 transitions. [2022-07-12 08:15:12,127 INFO L78 Accepts]: Start accepts. Automaton has 88494 states and 144741 transitions. Word has length 168 [2022-07-12 08:15:12,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 08:15:12,128 INFO L495 AbstractCegarLoop]: Abstraction has 88494 states and 144741 transitions. [2022-07-12 08:15:12,131 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 08:15:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 88494 states and 144741 transitions. [2022-07-12 08:15:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-12 08:15:12,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 08:15:12,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 08:15:12,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 08:15:12,164 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 08:15:12,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 08:15:12,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1475245797, now seen corresponding path program 1 times [2022-07-12 08:15:12,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 08:15:12,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43099016] [2022-07-12 08:15:12,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 08:15:12,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 08:15:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:15:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 08:15:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:15:12,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 08:15:12,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:15:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 08:15:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:15:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 08:15:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:15:12,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 08:15:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 08:15:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 08:15:12,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 08:15:12,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43099016] [2022-07-12 08:15:12,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43099016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 08:15:12,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 08:15:12,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 08:15:12,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195987770] [2022-07-12 08:15:12,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 08:15:12,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 08:15:12,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 08:15:12,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 08:15:12,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 08:15:12,254 INFO L87 Difference]: Start difference. First operand 88494 states and 144741 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)