./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0dd7176ec9512a8a603e4cceffab6b6f1677decce373a9b5c36f88d73957ca4d --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 19:17:51,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 19:17:51,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 19:17:51,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 19:17:51,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 19:17:51,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 19:17:51,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 19:17:51,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 19:17:51,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 19:17:51,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 19:17:51,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 19:17:51,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 19:17:51,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 19:17:51,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 19:17:51,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 19:17:51,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 19:17:51,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 19:17:51,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 19:17:51,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 19:17:51,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 19:17:51,097 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 19:17:51,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 19:17:51,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 19:17:51,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 19:17:51,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 19:17:51,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 19:17:51,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 19:17:51,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 19:17:51,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 19:17:51,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 19:17:51,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 19:17:51,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 19:17:51,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 19:17:51,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 19:17:51,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 19:17:51,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 19:17:51,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 19:17:51,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 19:17:51,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 19:17:51,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 19:17:51,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 19:17:51,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 19:17:51,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 19:17:51,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 19:17:51,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 19:17:51,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 19:17:51,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 19:17:51,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 19:17:51,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 19:17:51,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 19:17:51,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 19:17:51,140 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 19:17:51,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 19:17:51,141 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 19:17:51,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 19:17:51,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 19:17:51,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 19:17:51,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 19:17:51,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 19:17:51,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 19:17:51,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 19:17:51,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 19:17:51,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 19:17:51,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 19:17:51,142 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 19:17:51,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 19:17:51,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 19:17:51,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:17:51,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 19:17:51,143 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 19:17:51,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 19:17:51,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 19:17:51,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 19:17:51,143 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 19:17:51,144 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 19:17:51,144 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 19:17:51,144 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0dd7176ec9512a8a603e4cceffab6b6f1677decce373a9b5c36f88d73957ca4d [2022-07-19 19:17:51,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 19:17:51,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 19:17:51,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 19:17:51,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 19:17:51,335 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 19:17:51,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c [2022-07-19 19:17:51,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bab09108e/6db1cc4c8cd242fba1338373fc016a8a/FLAGd8f7735c9 [2022-07-19 19:17:52,023 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 19:17:52,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c [2022-07-19 19:17:52,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bab09108e/6db1cc4c8cd242fba1338373fc016a8a/FLAGd8f7735c9 [2022-07-19 19:17:52,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bab09108e/6db1cc4c8cd242fba1338373fc016a8a [2022-07-19 19:17:52,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 19:17:52,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 19:17:52,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 19:17:52,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 19:17:52,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 19:17:52,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:17:52" (1/1) ... [2022-07-19 19:17:52,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c30772 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:52, skipping insertion in model container [2022-07-19 19:17:52,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 07:17:52" (1/1) ... [2022-07-19 19:17:52,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 19:17:52,566 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 19:17:53,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c[378560,378573] [2022-07-19 19:17:53,805 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c[383339,383352] [2022-07-19 19:17:53,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:17:53,995 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 19:17:54,540 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c[378560,378573] [2022-07-19 19:17:54,545 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/Problem05_label42+token_ring.11.cil-2.c[383339,383352] [2022-07-19 19:17:54,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 19:17:54,596 INFO L208 MainTranslator]: Completed translation [2022-07-19 19:17:54,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:54 WrapperNode [2022-07-19 19:17:54,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 19:17:54,597 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 19:17:54,597 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 19:17:54,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 19:17:54,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:54" (1/1) ... [2022-07-19 19:17:54,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:54" (1/1) ... [2022-07-19 19:17:54,905 INFO L137 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13141 [2022-07-19 19:17:54,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 19:17:54,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 19:17:54,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 19:17:54,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 19:17:54,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:54" (1/1) ... [2022-07-19 19:17:54,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:54" (1/1) ... [2022-07-19 19:17:55,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:54" (1/1) ... [2022-07-19 19:17:55,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:54" (1/1) ... [2022-07-19 19:17:55,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:54" (1/1) ... [2022-07-19 19:17:55,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:54" (1/1) ... [2022-07-19 19:17:55,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:54" (1/1) ... [2022-07-19 19:17:55,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 19:17:55,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 19:17:55,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 19:17:55,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 19:17:55,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:54" (1/1) ... [2022-07-19 19:17:55,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 19:17:55,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 19:17:55,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 19:17:55,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 19:17:55,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 19:17:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-19 19:17:55,458 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-19 19:17:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-19 19:17:55,458 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-19 19:17:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-19 19:17:55,458 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-19 19:17:55,458 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-19 19:17:55,468 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-19 19:17:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-19 19:17:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-19 19:17:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-19 19:17:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-19 19:17:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 19:17:55,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 19:17:55,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 19:17:55,612 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 19:17:55,613 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 19:18:00,220 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 19:18:00,247 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 19:18:00,247 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-07-19 19:18:00,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:18:00 BoogieIcfgContainer [2022-07-19 19:18:00,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 19:18:00,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 19:18:00,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 19:18:00,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 19:18:00,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 07:17:52" (1/3) ... [2022-07-19 19:18:00,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d43e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:18:00, skipping insertion in model container [2022-07-19 19:18:00,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 07:17:54" (2/3) ... [2022-07-19 19:18:00,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22d43e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 07:18:00, skipping insertion in model container [2022-07-19 19:18:00,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 07:18:00" (3/3) ... [2022-07-19 19:18:00,256 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.11.cil-2.c [2022-07-19 19:18:00,264 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 19:18:00,264 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-19 19:18:00,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 19:18:00,318 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@7c26d069, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4977f232 [2022-07-19 19:18:00,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 19:18:00,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-19 19:18:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:18:00,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:18:00,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:18:00,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:18:00,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:18:00,345 INFO L85 PathProgramCache]: Analyzing trace with hash -17558896, now seen corresponding path program 1 times [2022-07-19 19:18:00,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:18:00,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441327359] [2022-07-19 19:18:00,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:18:00,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:18:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:18:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:00,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:18:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:00,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:18:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:00,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:18:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:18:00,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:18:00,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:18:00,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441327359] [2022-07-19 19:18:00,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441327359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:18:00,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:18:00,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 19:18:00,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123239295] [2022-07-19 19:18:00,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:18:00,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 19:18:00,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:18:00,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 19:18:00,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 19:18:00,775 INFO L87 Difference]: Start difference. First operand has 2540 states, 2506 states have (on average 1.8443735035913806) internal successors, (4622), 2509 states have internal predecessors, (4622), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:01,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:18:01,946 INFO L93 Difference]: Finished difference Result 5199 states and 9547 transitions. [2022-07-19 19:18:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 19:18:01,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:18:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:18:01,970 INFO L225 Difference]: With dead ends: 5199 [2022-07-19 19:18:01,971 INFO L226 Difference]: Without dead ends: 2604 [2022-07-19 19:18:01,980 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 [2022-07-19 19:18:01,992 INFO L413 NwaCegarLoop]: 4637 mSDtfsCounter, 953 mSDsluCounter, 12439 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 17076 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 19:18:01,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 17076 Invalid, 728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [58 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 19:18:02,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2022-07-19 19:18:02,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2473. [2022-07-19 19:18:02,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 2440 states have (on average 1.82827868852459) internal successors, (4461), 2442 states have internal predecessors, (4461), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-07-19 19:18:02,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 4511 transitions. [2022-07-19 19:18:02,081 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 4511 transitions. Word has length 167 [2022-07-19 19:18:02,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:18:02,082 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 4511 transitions. [2022-07-19 19:18:02,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:02,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 4511 transitions. [2022-07-19 19:18:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:18:02,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:18:02,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:18:02,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 19:18:02,086 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:18:02,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:18:02,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1911892782, now seen corresponding path program 1 times [2022-07-19 19:18:02,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:18:02,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95701661] [2022-07-19 19:18:02,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:18:02,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:18:02,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:02,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:18:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:02,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:18:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:02,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:18:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:02,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:18:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:02,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:18:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:18:02,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:18:02,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95701661] [2022-07-19 19:18:02,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95701661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:18:02,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:18:02,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 19:18:02,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148698664] [2022-07-19 19:18:02,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:18:02,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 19:18:02,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:18:02,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 19:18:02,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 19:18:02,292 INFO L87 Difference]: Start difference. First operand 2473 states and 4511 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:18:04,438 INFO L93 Difference]: Finished difference Result 3417 states and 6038 transitions. [2022-07-19 19:18:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 19:18:04,438 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:18:04,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:18:04,450 INFO L225 Difference]: With dead ends: 3417 [2022-07-19 19:18:04,450 INFO L226 Difference]: Without dead ends: 3084 [2022-07-19 19:18:04,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:18:04,453 INFO L413 NwaCegarLoop]: 4616 mSDtfsCounter, 5395 mSDsluCounter, 12755 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 17371 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-19 19:18:04,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5413 Valid, 17371 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1869 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-19 19:18:04,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3084 states. [2022-07-19 19:18:04,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 2823. [2022-07-19 19:18:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2823 states, 2763 states have (on average 1.8009410061527324) internal successors, (4976), 2766 states have internal predecessors, (4976), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-07-19 19:18:04,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2823 states to 2823 states and 5069 transitions. [2022-07-19 19:18:04,519 INFO L78 Accepts]: Start accepts. Automaton has 2823 states and 5069 transitions. Word has length 167 [2022-07-19 19:18:04,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:18:04,519 INFO L495 AbstractCegarLoop]: Abstraction has 2823 states and 5069 transitions. [2022-07-19 19:18:04,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:04,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2823 states and 5069 transitions. [2022-07-19 19:18:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:18:04,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:18:04,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:18:04,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 19:18:04,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:18:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:18:04,522 INFO L85 PathProgramCache]: Analyzing trace with hash -912306602, now seen corresponding path program 1 times [2022-07-19 19:18:04,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:18:04,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507625259] [2022-07-19 19:18:04,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:18:04,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:18:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:04,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:18:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:04,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:18:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:04,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:18:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:04,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:18:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:18:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:18:04,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:18:04,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507625259] [2022-07-19 19:18:04,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507625259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:18:04,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:18:04,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:18:04,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008187725] [2022-07-19 19:18:04,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:18:04,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:18:04,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:18:04,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:18:04,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:18:04,653 INFO L87 Difference]: Start difference. First operand 2823 states and 5069 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:07,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:18:07,531 INFO L93 Difference]: Finished difference Result 4265 states and 7403 transitions. [2022-07-19 19:18:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:18:07,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:18:07,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:18:07,544 INFO L225 Difference]: With dead ends: 4265 [2022-07-19 19:18:07,545 INFO L226 Difference]: Without dead ends: 3582 [2022-07-19 19:18:07,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:18:07,548 INFO L413 NwaCegarLoop]: 4895 mSDtfsCounter, 5420 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2905 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5438 SdHoareTripleChecker+Valid, 22471 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 19:18:07,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5438 Valid, 22471 Invalid, 2978 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 2905 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 19:18:07,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3582 states. [2022-07-19 19:18:07,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3582 to 3148. [2022-07-19 19:18:07,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3148 states, 3061 states have (on average 1.7775236850702385) internal successors, (5441), 3065 states have internal predecessors, (5441), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-07-19 19:18:07,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5576 transitions. [2022-07-19 19:18:07,651 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5576 transitions. Word has length 167 [2022-07-19 19:18:07,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:18:07,651 INFO L495 AbstractCegarLoop]: Abstraction has 3148 states and 5576 transitions. [2022-07-19 19:18:07,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:07,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5576 transitions. [2022-07-19 19:18:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:18:07,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:18:07,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:18:07,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 19:18:07,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:18:07,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:18:07,655 INFO L85 PathProgramCache]: Analyzing trace with hash -574019052, now seen corresponding path program 1 times [2022-07-19 19:18:07,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:18:07,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950749353] [2022-07-19 19:18:07,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:18:07,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:18:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:07,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:18:07,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:18:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:18:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:07,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:18:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:07,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:18:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:18:07,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:18:07,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950749353] [2022-07-19 19:18:07,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950749353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:18:07,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:18:07,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:18:07,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326898787] [2022-07-19 19:18:07,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:18:07,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:18:07,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:18:07,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:18:07,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:18:07,781 INFO L87 Difference]: Start difference. First operand 3148 states and 5576 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:10,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:18:10,488 INFO L93 Difference]: Finished difference Result 5515 states and 9398 transitions. [2022-07-19 19:18:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:18:10,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:18:10,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:18:10,503 INFO L225 Difference]: With dead ends: 5515 [2022-07-19 19:18:10,503 INFO L226 Difference]: Without dead ends: 4507 [2022-07-19 19:18:10,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:18:10,507 INFO L413 NwaCegarLoop]: 4887 mSDtfsCounter, 5417 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5435 SdHoareTripleChecker+Valid, 22463 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:18:10,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5435 Valid, 22463 Invalid, 2983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 19:18:10,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2022-07-19 19:18:10,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 3799. [2022-07-19 19:18:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3799 states, 3658 states have (on average 1.7419354838709677) internal successors, (6372), 3664 states have internal predecessors, (6372), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-07-19 19:18:10,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3799 states to 3799 states and 6595 transitions. [2022-07-19 19:18:10,614 INFO L78 Accepts]: Start accepts. Automaton has 3799 states and 6595 transitions. Word has length 167 [2022-07-19 19:18:10,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:18:10,615 INFO L495 AbstractCegarLoop]: Abstraction has 3799 states and 6595 transitions. [2022-07-19 19:18:10,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:10,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3799 states and 6595 transitions. [2022-07-19 19:18:10,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:18:10,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:18:10,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:18:10,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 19:18:10,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:18:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:18:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash -147464554, now seen corresponding path program 1 times [2022-07-19 19:18:10,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:18:10,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503027199] [2022-07-19 19:18:10,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:18:10,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:18:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:10,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:18:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:10,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:18:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:10,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:18:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:18:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:10,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:18:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:18:10,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:18:10,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503027199] [2022-07-19 19:18:10,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503027199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:18:10,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:18:10,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:18:10,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206875411] [2022-07-19 19:18:10,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:18:10,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:18:10,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:18:10,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:18:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:18:10,744 INFO L87 Difference]: Start difference. First operand 3799 states and 6595 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:13,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:18:13,488 INFO L93 Difference]: Finished difference Result 7918 states and 13209 transitions. [2022-07-19 19:18:13,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:18:13,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:18:13,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:18:13,510 INFO L225 Difference]: With dead ends: 7918 [2022-07-19 19:18:13,510 INFO L226 Difference]: Without dead ends: 6259 [2022-07-19 19:18:13,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:18:13,519 INFO L413 NwaCegarLoop]: 4883 mSDtfsCounter, 5413 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5431 SdHoareTripleChecker+Valid, 22459 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 19:18:13,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5431 Valid, 22459 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 19:18:13,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2022-07-19 19:18:13,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 5102. [2022-07-19 19:18:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5102 states, 4853 states have (on average 1.6966824644549763) internal successors, (8234), 4863 states have internal predecessors, (8234), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-07-19 19:18:13,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5102 states to 5102 states and 8639 transitions. [2022-07-19 19:18:13,720 INFO L78 Accepts]: Start accepts. Automaton has 5102 states and 8639 transitions. Word has length 167 [2022-07-19 19:18:13,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:18:13,721 INFO L495 AbstractCegarLoop]: Abstraction has 5102 states and 8639 transitions. [2022-07-19 19:18:13,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5102 states and 8639 transitions. [2022-07-19 19:18:13,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:18:13,724 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:18:13,724 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:18:13,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 19:18:13,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:18:13,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:18:13,725 INFO L85 PathProgramCache]: Analyzing trace with hash -687894060, now seen corresponding path program 1 times [2022-07-19 19:18:13,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:18:13,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524379108] [2022-07-19 19:18:13,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:18:13,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:18:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:18:13,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:13,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:18:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:13,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:18:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:13,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:18:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:13,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:18:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:18:13,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:18:13,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524379108] [2022-07-19 19:18:13,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524379108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:18:13,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:18:13,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:18:13,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100681387] [2022-07-19 19:18:13,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:18:13,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:18:13,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:18:13,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:18:13,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:18:13,853 INFO L87 Difference]: Start difference. First operand 5102 states and 8639 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:16,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:18:16,630 INFO L93 Difference]: Finished difference Result 12723 states and 20847 transitions. [2022-07-19 19:18:16,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:18:16,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:18:16,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:18:16,660 INFO L225 Difference]: With dead ends: 12723 [2022-07-19 19:18:16,661 INFO L226 Difference]: Without dead ends: 9761 [2022-07-19 19:18:16,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:18:16,671 INFO L413 NwaCegarLoop]: 4879 mSDtfsCounter, 5409 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5427 SdHoareTripleChecker+Valid, 22455 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:18:16,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5427 Valid, 22455 Invalid, 2973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 19:18:16,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9761 states. [2022-07-19 19:18:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9761 to 7713. [2022-07-19 19:18:16,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7713 states, 7248 states have (on average 1.650662251655629) internal successors, (11964), 7266 states have internal predecessors, (11964), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-07-19 19:18:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7713 states to 7713 states and 12751 transitions. [2022-07-19 19:18:16,992 INFO L78 Accepts]: Start accepts. Automaton has 7713 states and 12751 transitions. Word has length 167 [2022-07-19 19:18:16,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:18:16,993 INFO L495 AbstractCegarLoop]: Abstraction has 7713 states and 12751 transitions. [2022-07-19 19:18:16,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:16,994 INFO L276 IsEmpty]: Start isEmpty. Operand 7713 states and 12751 transitions. [2022-07-19 19:18:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:18:16,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:18:16,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:18:16,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 19:18:16,997 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:18:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:18:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash -843874602, now seen corresponding path program 1 times [2022-07-19 19:18:16,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:18:16,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810332759] [2022-07-19 19:18:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:18:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:18:17,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:17,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:18:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:17,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:18:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:18:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:17,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:18:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:17,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:18:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:18:17,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:18:17,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810332759] [2022-07-19 19:18:17,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810332759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:18:17,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:18:17,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:18:17,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292415067] [2022-07-19 19:18:17,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:18:17,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:18:17,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:18:17,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:18:17,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:18:17,124 INFO L87 Difference]: Start difference. First operand 7713 states and 12751 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:20,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:18:20,310 INFO L93 Difference]: Finished difference Result 22332 states and 36181 transitions. [2022-07-19 19:18:20,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:18:20,311 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:18:20,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:18:20,356 INFO L225 Difference]: With dead ends: 22332 [2022-07-19 19:18:20,356 INFO L226 Difference]: Without dead ends: 16759 [2022-07-19 19:18:20,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:18:20,378 INFO L413 NwaCegarLoop]: 4873 mSDtfsCounter, 5408 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5426 SdHoareTripleChecker+Valid, 22449 SdHoareTripleChecker+Invalid, 2968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:18:20,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5426 Valid, 22449 Invalid, 2968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 19:18:20,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16759 states. [2022-07-19 19:18:20,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16759 to 12948. [2022-07-19 19:18:20,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.613310098746992) internal successors, (19442), 12085 states have internal predecessors, (19442), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-19 19:18:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21047 transitions. [2022-07-19 19:18:21,009 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21047 transitions. Word has length 167 [2022-07-19 19:18:21,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:18:21,009 INFO L495 AbstractCegarLoop]: Abstraction has 12948 states and 21047 transitions. [2022-07-19 19:18:21,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21047 transitions. [2022-07-19 19:18:21,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:18:21,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:18:21,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:18:21,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 19:18:21,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:18:21,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:18:21,016 INFO L85 PathProgramCache]: Analyzing trace with hash -433264236, now seen corresponding path program 1 times [2022-07-19 19:18:21,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:18:21,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556780183] [2022-07-19 19:18:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:18:21,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:18:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:21,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:18:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:21,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:18:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:21,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:18:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:18:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:21,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:18:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:18:21,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:18:21,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556780183] [2022-07-19 19:18:21,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556780183] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:18:21,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:18:21,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:18:21,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414603617] [2022-07-19 19:18:21,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:18:21,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:18:21,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:18:21,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:18:21,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:18:21,113 INFO L87 Difference]: Start difference. First operand 12948 states and 21047 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:23,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:18:23,196 INFO L93 Difference]: Finished difference Result 27774 states and 45096 transitions. [2022-07-19 19:18:23,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 19:18:23,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:18:23,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:18:23,239 INFO L225 Difference]: With dead ends: 27774 [2022-07-19 19:18:23,239 INFO L226 Difference]: Without dead ends: 16966 [2022-07-19 19:18:23,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:18:23,268 INFO L413 NwaCegarLoop]: 4542 mSDtfsCounter, 4998 mSDsluCounter, 16699 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5017 SdHoareTripleChecker+Valid, 21241 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:18:23,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5017 Valid, 21241 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 19:18:23,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16966 states. [2022-07-19 19:18:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16966 to 12948. [2022-07-19 19:18:23,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12948 states, 12051 states have (on average 1.610571736785329) internal successors, (19409), 12085 states have internal predecessors, (19409), 665 states have call successors, (665), 198 states have call predecessors, (665), 230 states have return successors, (940), 696 states have call predecessors, (940), 665 states have call successors, (940) [2022-07-19 19:18:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12948 states to 12948 states and 21014 transitions. [2022-07-19 19:18:23,921 INFO L78 Accepts]: Start accepts. Automaton has 12948 states and 21014 transitions. Word has length 167 [2022-07-19 19:18:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:18:23,922 INFO L495 AbstractCegarLoop]: Abstraction has 12948 states and 21014 transitions. [2022-07-19 19:18:23,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:23,922 INFO L276 IsEmpty]: Start isEmpty. Operand 12948 states and 21014 transitions. [2022-07-19 19:18:23,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:18:23,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:18:23,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:18:23,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 19:18:23,929 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:18:23,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:18:23,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1725819858, now seen corresponding path program 1 times [2022-07-19 19:18:23,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:18:23,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708330617] [2022-07-19 19:18:23,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:18:23,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:18:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:23,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:18:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:18:23,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:24,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:18:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:18:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:24,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:18:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:18:24,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:18:24,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708330617] [2022-07-19 19:18:24,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708330617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:18:24,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:18:24,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:18:24,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464604172] [2022-07-19 19:18:24,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:18:24,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:18:24,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:18:24,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:18:24,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:18:24,028 INFO L87 Difference]: Start difference. First operand 12948 states and 21014 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:28,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:18:28,169 INFO L93 Difference]: Finished difference Result 41484 states and 66747 transitions. [2022-07-19 19:18:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:18:28,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:18:28,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:18:28,242 INFO L225 Difference]: With dead ends: 41484 [2022-07-19 19:18:28,242 INFO L226 Difference]: Without dead ends: 30676 [2022-07-19 19:18:28,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:18:28,267 INFO L413 NwaCegarLoop]: 4859 mSDtfsCounter, 5396 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2850 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5414 SdHoareTripleChecker+Valid, 22435 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 19:18:28,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5414 Valid, 22435 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2850 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 19:18:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30676 states. [2022-07-19 19:18:29,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30676 to 23513. [2022-07-19 19:18:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23513 states, 21752 states have (on average 1.5849117322545054) internal successors, (34475), 21818 states have internal predecessors, (34475), 1305 states have call successors, (1305), 390 states have call predecessors, (1305), 454 states have return successors, (2098), 1368 states have call predecessors, (2098), 1305 states have call successors, (2098) [2022-07-19 19:18:29,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23513 states to 23513 states and 37878 transitions. [2022-07-19 19:18:29,544 INFO L78 Accepts]: Start accepts. Automaton has 23513 states and 37878 transitions. Word has length 167 [2022-07-19 19:18:29,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:18:29,545 INFO L495 AbstractCegarLoop]: Abstraction has 23513 states and 37878 transitions. [2022-07-19 19:18:29,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:29,545 INFO L276 IsEmpty]: Start isEmpty. Operand 23513 states and 37878 transitions. [2022-07-19 19:18:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:18:29,556 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:18:29,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:18:29,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 19:18:29,556 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:18:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:18:29,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1795467732, now seen corresponding path program 1 times [2022-07-19 19:18:29,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:18:29,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131611287] [2022-07-19 19:18:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:18:29,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:18:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:29,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:18:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:18:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:29,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:18:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:29,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:18:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:29,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:18:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:18:29,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:18:29,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131611287] [2022-07-19 19:18:29,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131611287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:18:29,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:18:29,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:18:29,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352151632] [2022-07-19 19:18:29,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:18:29,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:18:29,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:18:29,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:18:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:18:29,666 INFO L87 Difference]: Start difference. First operand 23513 states and 37878 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:35,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:18:35,524 INFO L93 Difference]: Finished difference Result 79923 states and 128881 transitions. [2022-07-19 19:18:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:18:35,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:18:35,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:18:35,733 INFO L225 Difference]: With dead ends: 79923 [2022-07-19 19:18:35,734 INFO L226 Difference]: Without dead ends: 58550 [2022-07-19 19:18:35,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:18:35,787 INFO L413 NwaCegarLoop]: 4854 mSDtfsCounter, 5395 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5413 SdHoareTripleChecker+Valid, 22430 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:18:35,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5413 Valid, 22430 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2842 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 19:18:35,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58550 states. [2022-07-19 19:18:38,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58550 to 44702. [2022-07-19 19:18:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44702 states, 41213 states have (on average 1.5697231456093952) internal successors, (64693), 41343 states have internal predecessors, (64693), 2585 states have call successors, (2585), 774 states have call predecessors, (2585), 902 states have return successors, (4900), 2712 states have call predecessors, (4900), 2585 states have call successors, (4900) [2022-07-19 19:18:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44702 states to 44702 states and 72178 transitions. [2022-07-19 19:18:38,498 INFO L78 Accepts]: Start accepts. Automaton has 44702 states and 72178 transitions. Word has length 167 [2022-07-19 19:18:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:18:38,498 INFO L495 AbstractCegarLoop]: Abstraction has 44702 states and 72178 transitions. [2022-07-19 19:18:38,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:38,499 INFO L276 IsEmpty]: Start isEmpty. Operand 44702 states and 72178 transitions. [2022-07-19 19:18:38,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:18:38,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:18:38,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:18:38,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 19:18:38,517 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:18:38,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:18:38,517 INFO L85 PathProgramCache]: Analyzing trace with hash -2081610862, now seen corresponding path program 1 times [2022-07-19 19:18:38,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:18:38,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246279227] [2022-07-19 19:18:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:18:38,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:18:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:18:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:38,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:18:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:38,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:18:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:18:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:38,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:18:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:18:38,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:18:38,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246279227] [2022-07-19 19:18:38,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246279227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:18:38,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:18:38,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:18:38,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837277922] [2022-07-19 19:18:38,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:18:38,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:18:38,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:18:38,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:18:38,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:18:38,620 INFO L87 Difference]: Start difference. First operand 44702 states and 72178 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:18:48,608 INFO L93 Difference]: Finished difference Result 156798 states and 254991 transitions. [2022-07-19 19:18:48,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 19:18:48,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:18:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:18:48,979 INFO L225 Difference]: With dead ends: 156798 [2022-07-19 19:18:48,979 INFO L226 Difference]: Without dead ends: 114236 [2022-07-19 19:18:49,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-19 19:18:49,098 INFO L413 NwaCegarLoop]: 4849 mSDtfsCounter, 5394 mSDsluCounter, 17576 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5412 SdHoareTripleChecker+Valid, 22425 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 19:18:49,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5412 Valid, 22425 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2834 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-19 19:18:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114236 states. [2022-07-19 19:18:54,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114236 to 87207. [2022-07-19 19:18:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87207 states, 80262 states have (on average 1.5613740001495104) internal successors, (125319), 80520 states have internal predecessors, (125319), 5145 states have call successors, (5145), 1542 states have call predecessors, (5145), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-19 19:18:54,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87207 states to 87207 states and 142426 transitions. [2022-07-19 19:18:54,761 INFO L78 Accepts]: Start accepts. Automaton has 87207 states and 142426 transitions. Word has length 167 [2022-07-19 19:18:54,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:18:54,761 INFO L495 AbstractCegarLoop]: Abstraction has 87207 states and 142426 transitions. [2022-07-19 19:18:54,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:18:54,761 INFO L276 IsEmpty]: Start isEmpty. Operand 87207 states and 142426 transitions. [2022-07-19 19:18:54,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:18:54,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:18:54,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:18:54,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 19:18:54,795 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:18:54,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:18:54,796 INFO L85 PathProgramCache]: Analyzing trace with hash -682657260, now seen corresponding path program 1 times [2022-07-19 19:18:54,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:18:54,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417566111] [2022-07-19 19:18:54,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:18:54,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:18:54,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:54,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:18:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:54,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:18:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:54,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:18:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:54,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:18:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:54,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:18:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:18:54,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:18:54,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:18:54,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417566111] [2022-07-19 19:18:54,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417566111] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:18:54,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:18:54,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:18:54,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922689102] [2022-07-19 19:18:54,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:18:54,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:18:54,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:18:54,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:18:54,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:18:54,898 INFO L87 Difference]: Start difference. First operand 87207 states and 142426 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:19:05,001 INFO L93 Difference]: Finished difference Result 200924 states and 334667 transitions. [2022-07-19 19:19:05,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 19:19:05,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:19:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:19:05,600 INFO L225 Difference]: With dead ends: 200924 [2022-07-19 19:19:05,601 INFO L226 Difference]: Without dead ends: 115857 [2022-07-19 19:19:05,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 19:19:05,758 INFO L413 NwaCegarLoop]: 4529 mSDtfsCounter, 5153 mSDsluCounter, 12560 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 17089 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 19:19:05,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5172 Valid, 17089 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 19:19:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115857 states. [2022-07-19 19:19:11,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115857 to 87207. [2022-07-19 19:19:11,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87207 states, 80262 states have (on average 1.5581719867434154) internal successors, (125062), 80520 states have internal predecessors, (125062), 5145 states have call successors, (5145), 1542 states have call predecessors, (5145), 1798 states have return successors, (11962), 5400 states have call predecessors, (11962), 5145 states have call successors, (11962) [2022-07-19 19:19:12,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87207 states to 87207 states and 142169 transitions. [2022-07-19 19:19:12,142 INFO L78 Accepts]: Start accepts. Automaton has 87207 states and 142169 transitions. Word has length 167 [2022-07-19 19:19:12,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 19:19:12,142 INFO L495 AbstractCegarLoop]: Abstraction has 87207 states and 142169 transitions. [2022-07-19 19:19:12,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:12,143 INFO L276 IsEmpty]: Start isEmpty. Operand 87207 states and 142169 transitions. [2022-07-19 19:19:12,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 19:19:12,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 19:19:12,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 19:19:12,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 19:19:12,179 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 19:19:12,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 19:19:12,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1994869586, now seen corresponding path program 1 times [2022-07-19 19:19:12,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 19:19:12,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037394200] [2022-07-19 19:19:12,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 19:19:12,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 19:19:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:12,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 19:19:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:12,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 19:19:12,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:12,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 19:19:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 19:19:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:12,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 19:19:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 19:19:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 19:19:12,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 19:19:12,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037394200] [2022-07-19 19:19:12,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037394200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 19:19:12,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 19:19:12,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 19:19:12,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352210044] [2022-07-19 19:19:12,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 19:19:12,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 19:19:12,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 19:19:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 19:19:12,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 19:19:12,275 INFO L87 Difference]: Start difference. First operand 87207 states and 142169 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 19:19:40,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 19:19:40,325 INFO L93 Difference]: Finished difference Result 352019 states and 575055 transitions. [2022-07-19 19:19:40,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 19:19:40,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-07-19 19:19:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 19:19:41,379 INFO L225 Difference]: With dead ends: 352019 [2022-07-19 19:19:41,379 INFO L226 Difference]: Without dead ends: 266952 [2022-07-19 19:19:41,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-19 19:19:41,709 INFO L413 NwaCegarLoop]: 4836 mSDtfsCounter, 5833 mSDsluCounter, 17568 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5863 SdHoareTripleChecker+Valid, 22404 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 19:19:41,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5863 Valid, 22404 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 19:19:41,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266952 states.