./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a41d14195dc7825ea8ff849a910a7045aa33d6087daf5af287d6c34e44b1032a --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:33:05,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:33:05,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:33:05,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:33:05,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:33:05,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:33:05,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:33:05,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:33:05,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:33:05,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:33:05,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:33:05,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:33:05,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:33:05,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:33:05,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:33:05,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:33:05,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:33:05,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:33:05,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:33:05,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:33:05,287 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:33:05,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:33:05,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:33:05,289 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:33:05,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:33:05,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:33:05,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:33:05,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:33:05,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:33:05,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:33:05,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:33:05,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:33:05,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:33:05,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:33:05,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:33:05,296 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:33:05,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:33:05,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:33:05,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:33:05,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:33:05,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:33:05,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:33:05,299 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:33:05,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:33:05,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:33:05,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:33:05,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:33:05,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:33:05,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:33:05,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:33:05,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:33:05,315 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:33:05,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:33:05,316 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:33:05,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:33:05,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:33:05,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:33:05,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:33:05,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:33:05,317 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:33:05,317 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:33:05,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:33:05,318 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:33:05,318 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:33:05,318 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:33:05,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:33:05,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:33:05,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:33:05,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:33:05,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:33:05,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:33:05,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:33:05,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:33:05,320 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:33:05,320 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:33:05,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:33:05,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a41d14195dc7825ea8ff849a910a7045aa33d6087daf5af287d6c34e44b1032a [2022-07-12 09:33:05,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:33:05,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:33:05,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:33:05,530 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:33:05,532 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:33:05,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2022-07-12 09:33:05,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817402e6f/392773d3830849668ebe6369edce450a/FLAG5a3087b72 [2022-07-12 09:33:06,000 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:33:06,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2022-07-12 09:33:06,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817402e6f/392773d3830849668ebe6369edce450a/FLAG5a3087b72 [2022-07-12 09:33:06,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/817402e6f/392773d3830849668ebe6369edce450a [2022-07-12 09:33:06,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:33:06,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:33:06,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:33:06,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:33:06,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:33:06,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:33:06" (1/1) ... [2022-07-12 09:33:06,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2db7dacd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06, skipping insertion in model container [2022-07-12 09:33:06,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:33:06" (1/1) ... [2022-07-12 09:33:06,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:33:06,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:33:06,602 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c[914,927] [2022-07-12 09:33:06,645 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c[7115,7128] [2022-07-12 09:33:06,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:33:06,712 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:33:06,719 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c[914,927] [2022-07-12 09:33:06,729 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c[7115,7128] [2022-07-12 09:33:06,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:33:06,775 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:33:06,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06 WrapperNode [2022-07-12 09:33:06,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:33:06,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:33:06,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:33:06,777 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:33:06,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06" (1/1) ... [2022-07-12 09:33:06,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06" (1/1) ... [2022-07-12 09:33:06,838 INFO L137 Inliner]: procedures = 77, calls = 94, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1045 [2022-07-12 09:33:06,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:33:06,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:33:06,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:33:06,839 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:33:06,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06" (1/1) ... [2022-07-12 09:33:06,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06" (1/1) ... [2022-07-12 09:33:06,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06" (1/1) ... [2022-07-12 09:33:06,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06" (1/1) ... [2022-07-12 09:33:06,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06" (1/1) ... [2022-07-12 09:33:06,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06" (1/1) ... [2022-07-12 09:33:06,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06" (1/1) ... [2022-07-12 09:33:06,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:33:06,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:33:06,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:33:06,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:33:06,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06" (1/1) ... [2022-07-12 09:33:06,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:33:06,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:33:06,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 09:33:06,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 09:33:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:33:06,974 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-07-12 09:33:06,974 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-07-12 09:33:06,975 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-07-12 09:33:06,975 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-07-12 09:33:06,975 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-07-12 09:33:06,975 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-07-12 09:33:06,975 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-07-12 09:33:06,975 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-07-12 09:33:06,975 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-07-12 09:33:06,976 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-07-12 09:33:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-07-12 09:33:06,976 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-07-12 09:33:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-07-12 09:33:06,976 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-07-12 09:33:06,976 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-07-12 09:33:06,976 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-07-12 09:33:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-07-12 09:33:06,977 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-07-12 09:33:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-07-12 09:33:06,977 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-07-12 09:33:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-07-12 09:33:06,977 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-07-12 09:33:06,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:33:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-07-12 09:33:06,978 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-07-12 09:33:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-07-12 09:33:06,978 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-07-12 09:33:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:33:06,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:33:06,978 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-07-12 09:33:06,978 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-07-12 09:33:06,979 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-07-12 09:33:06,979 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-07-12 09:33:07,085 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:33:07,087 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:33:07,759 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:33:07,773 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:33:07,774 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-07-12 09:33:07,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:33:07 BoogieIcfgContainer [2022-07-12 09:33:07,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:33:07,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:33:07,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:33:07,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:33:07,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:33:06" (1/3) ... [2022-07-12 09:33:07,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2ed52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:33:07, skipping insertion in model container [2022-07-12 09:33:07,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:33:06" (2/3) ... [2022-07-12 09:33:07,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2ed52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:33:07, skipping insertion in model container [2022-07-12 09:33:07,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:33:07" (3/3) ... [2022-07-12 09:33:07,784 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2022-07-12 09:33:07,793 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:33:07,794 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:33:07,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:33:07,914 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@170237e5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@43b48b44 [2022-07-12 09:33:07,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:33:07,921 INFO L276 IsEmpty]: Start isEmpty. Operand has 491 states, 431 states have (on average 1.6450116009280742) internal successors, (709), 439 states have internal predecessors, (709), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2022-07-12 09:33:07,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:33:07,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:07,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:07,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:07,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:07,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1117056757, now seen corresponding path program 1 times [2022-07-12 09:33:07,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:07,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456048333] [2022-07-12 09:33:07,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:07,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:08,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:08,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:08,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:08,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:08,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:08,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:08,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:08,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:08,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456048333] [2022-07-12 09:33:08,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456048333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:08,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:08,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:33:08,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148589213] [2022-07-12 09:33:08,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:08,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:33:08,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:33:08,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:33:08,279 INFO L87 Difference]: Start difference. First operand has 491 states, 431 states have (on average 1.6450116009280742) internal successors, (709), 439 states have internal predecessors, (709), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:33:09,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:09,243 INFO L93 Difference]: Finished difference Result 1088 states and 1744 transitions. [2022-07-12 09:33:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:33:09,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:33:09,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:09,257 INFO L225 Difference]: With dead ends: 1088 [2022-07-12 09:33:09,257 INFO L226 Difference]: Without dead ends: 615 [2022-07-12 09:33:09,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:09,264 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1212 mSDsluCounter, 1757 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:09,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 2509 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:33:09,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-07-12 09:33:09,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 576. [2022-07-12 09:33:09,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 499 states have (on average 1.531062124248497) internal successors, (764), 506 states have internal predecessors, (764), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2022-07-12 09:33:09,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 871 transitions. [2022-07-12 09:33:09,329 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 871 transitions. Word has length 65 [2022-07-12 09:33:09,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:09,330 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 871 transitions. [2022-07-12 09:33:09,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:33:09,330 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 871 transitions. [2022-07-12 09:33:09,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:33:09,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:09,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:09,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:33:09,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:09,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash -713270806, now seen corresponding path program 1 times [2022-07-12 09:33:09,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:09,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959757389] [2022-07-12 09:33:09,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:09,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:09,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:09,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:09,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:09,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:09,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959757389] [2022-07-12 09:33:09,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959757389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:09,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:09,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:33:09,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35570934] [2022-07-12 09:33:09,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:09,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:33:09,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:09,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:33:09,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:33:09,427 INFO L87 Difference]: Start difference. First operand 576 states and 871 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:33:10,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:10,326 INFO L93 Difference]: Finished difference Result 923 states and 1348 transitions. [2022-07-12 09:33:10,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:33:10,327 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:33:10,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:10,334 INFO L225 Difference]: With dead ends: 923 [2022-07-12 09:33:10,335 INFO L226 Difference]: Without dead ends: 746 [2022-07-12 09:33:10,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:33:10,339 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 1861 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:10,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 2362 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:33:10,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-07-12 09:33:10,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 672. [2022-07-12 09:33:10,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 575 states have (on average 1.5095652173913043) internal successors, (868), 584 states have internal predecessors, (868), 64 states have call successors, (64), 29 states have call predecessors, (64), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2022-07-12 09:33:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 1005 transitions. [2022-07-12 09:33:10,382 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 1005 transitions. Word has length 65 [2022-07-12 09:33:10,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:10,382 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 1005 transitions. [2022-07-12 09:33:10,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:33:10,383 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 1005 transitions. [2022-07-12 09:33:10,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:33:10,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:10,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:10,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:33:10,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:10,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:10,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1553110380, now seen corresponding path program 1 times [2022-07-12 09:33:10,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:10,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257951845] [2022-07-12 09:33:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:10,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:10,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:10,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:10,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:10,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257951845] [2022-07-12 09:33:10,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257951845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:10,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:10,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:33:10,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000427765] [2022-07-12 09:33:10,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:10,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:33:10,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:10,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:33:10,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:33:10,495 INFO L87 Difference]: Start difference. First operand 672 states and 1005 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:33:11,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:11,420 INFO L93 Difference]: Finished difference Result 973 states and 1419 transitions. [2022-07-12 09:33:11,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:33:11,421 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-12 09:33:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:11,424 INFO L225 Difference]: With dead ends: 973 [2022-07-12 09:33:11,424 INFO L226 Difference]: Without dead ends: 706 [2022-07-12 09:33:11,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:33:11,425 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 971 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:11,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 2902 Invalid, 1784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:33:11,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-07-12 09:33:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 677. [2022-07-12 09:33:11,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 579 states have (on average 1.5025906735751295) internal successors, (870), 588 states have internal predecessors, (870), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (74), 63 states have call predecessors, (74), 60 states have call successors, (74) [2022-07-12 09:33:11,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 1008 transitions. [2022-07-12 09:33:11,446 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 1008 transitions. Word has length 65 [2022-07-12 09:33:11,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:11,446 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 1008 transitions. [2022-07-12 09:33:11,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:33:11,447 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 1008 transitions. [2022-07-12 09:33:11,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:33:11,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:11,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:11,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:33:11,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:11,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:11,450 INFO L85 PathProgramCache]: Analyzing trace with hash 523751082, now seen corresponding path program 1 times [2022-07-12 09:33:11,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:11,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455866617] [2022-07-12 09:33:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:11,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:11,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:11,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455866617] [2022-07-12 09:33:11,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455866617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:11,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:11,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:33:11,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138252775] [2022-07-12 09:33:11,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:11,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:33:11,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:11,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:33:11,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:33:11,527 INFO L87 Difference]: Start difference. First operand 677 states and 1008 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:33:12,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:12,946 INFO L93 Difference]: Finished difference Result 1999 states and 2804 transitions. [2022-07-12 09:33:12,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-12 09:33:12,946 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-07-12 09:33:12,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:12,952 INFO L225 Difference]: With dead ends: 1999 [2022-07-12 09:33:12,952 INFO L226 Difference]: Without dead ends: 1709 [2022-07-12 09:33:12,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 09:33:12,954 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 3634 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 1708 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3648 SdHoareTripleChecker+Valid, 3023 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 1708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:12,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3648 Valid, 3023 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 1708 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:33:12,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2022-07-12 09:33:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1578. [2022-07-12 09:33:12,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1294 states have (on average 1.3979907264296754) internal successors, (1809), 1318 states have internal predecessors, (1809), 152 states have call successors, (152), 112 states have call predecessors, (152), 130 states have return successors, (188), 150 states have call predecessors, (188), 148 states have call successors, (188) [2022-07-12 09:33:13,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2149 transitions. [2022-07-12 09:33:13,004 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2149 transitions. Word has length 65 [2022-07-12 09:33:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:13,005 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 2149 transitions. [2022-07-12 09:33:13,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-12 09:33:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2149 transitions. [2022-07-12 09:33:13,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:33:13,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:13,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:13,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:33:13,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:13,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:13,007 INFO L85 PathProgramCache]: Analyzing trace with hash 116960512, now seen corresponding path program 1 times [2022-07-12 09:33:13,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:13,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401475907] [2022-07-12 09:33:13,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:13,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:13,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:13,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401475907] [2022-07-12 09:33:13,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401475907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:13,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:13,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:33:13,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285322881] [2022-07-12 09:33:13,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:13,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:33:13,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:33:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:33:13,092 INFO L87 Difference]: Start difference. First operand 1578 states and 2149 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:33:14,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:14,031 INFO L93 Difference]: Finished difference Result 2869 states and 3822 transitions. [2022-07-12 09:33:14,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:33:14,031 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-12 09:33:14,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:14,037 INFO L225 Difference]: With dead ends: 2869 [2022-07-12 09:33:14,038 INFO L226 Difference]: Without dead ends: 1684 [2022-07-12 09:33:14,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:33:14,041 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 652 mSDsluCounter, 2510 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 3232 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:14,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 3232 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:33:14,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2022-07-12 09:33:14,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1608. [2022-07-12 09:33:14,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1608 states, 1318 states have (on average 1.3846737481031866) internal successors, (1825), 1342 states have internal predecessors, (1825), 152 states have call successors, (152), 112 states have call predecessors, (152), 136 states have return successors, (194), 156 states have call predecessors, (194), 148 states have call successors, (194) [2022-07-12 09:33:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2171 transitions. [2022-07-12 09:33:14,092 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2171 transitions. Word has length 65 [2022-07-12 09:33:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:14,093 INFO L495 AbstractCegarLoop]: Abstraction has 1608 states and 2171 transitions. [2022-07-12 09:33:14,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:33:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2171 transitions. [2022-07-12 09:33:14,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:33:14,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:14,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:14,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:33:14,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:14,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:14,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1503163906, now seen corresponding path program 1 times [2022-07-12 09:33:14,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:14,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229255610] [2022-07-12 09:33:14,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:14,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:14,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:14,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229255610] [2022-07-12 09:33:14,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229255610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:14,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:14,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:33:14,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632187965] [2022-07-12 09:33:14,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:14,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:33:14,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:14,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:33:14,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:33:14,187 INFO L87 Difference]: Start difference. First operand 1608 states and 2171 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:33:15,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:15,042 INFO L93 Difference]: Finished difference Result 2863 states and 3718 transitions. [2022-07-12 09:33:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 09:33:15,043 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:33:15,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:15,049 INFO L225 Difference]: With dead ends: 2863 [2022-07-12 09:33:15,049 INFO L226 Difference]: Without dead ends: 1871 [2022-07-12 09:33:15,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-07-12 09:33:15,051 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 1447 mSDsluCounter, 1758 mSDsCounter, 0 mSdLazyCounter, 1276 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:15,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 2489 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1276 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:33:15,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1871 states. [2022-07-12 09:33:15,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1871 to 1550. [2022-07-12 09:33:15,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1550 states, 1276 states have (on average 1.3824451410658307) internal successors, (1764), 1295 states have internal predecessors, (1764), 146 states have call successors, (146), 107 states have call predecessors, (146), 126 states have return successors, (179), 149 states have call predecessors, (179), 142 states have call successors, (179) [2022-07-12 09:33:15,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1550 states to 1550 states and 2089 transitions. [2022-07-12 09:33:15,112 INFO L78 Accepts]: Start accepts. Automaton has 1550 states and 2089 transitions. Word has length 65 [2022-07-12 09:33:15,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:15,112 INFO L495 AbstractCegarLoop]: Abstraction has 1550 states and 2089 transitions. [2022-07-12 09:33:15,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:33:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1550 states and 2089 transitions. [2022-07-12 09:33:15,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 09:33:15,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:15,113 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:15,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:33:15,114 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:15,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:15,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1369150400, now seen corresponding path program 1 times [2022-07-12 09:33:15,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:15,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481518746] [2022-07-12 09:33:15,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:15,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:15,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:15,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481518746] [2022-07-12 09:33:15,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481518746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:15,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:15,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:15,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225283011] [2022-07-12 09:33:15,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:15,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:15,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:15,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:15,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:15,179 INFO L87 Difference]: Start difference. First operand 1550 states and 2089 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:33:15,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:15,649 INFO L93 Difference]: Finished difference Result 3889 states and 5050 transitions. [2022-07-12 09:33:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 09:33:15,650 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 09:33:15,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:15,658 INFO L225 Difference]: With dead ends: 3889 [2022-07-12 09:33:15,658 INFO L226 Difference]: Without dead ends: 2733 [2022-07-12 09:33:15,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:33:15,660 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1414 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 2099 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:15,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 2099 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:33:15,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2022-07-12 09:33:15,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2613. [2022-07-12 09:33:15,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2613 states, 2096 states have (on average 1.3148854961832062) internal successors, (2756), 2132 states have internal predecessors, (2756), 265 states have call successors, (265), 206 states have call predecessors, (265), 250 states have return successors, (370), 277 states have call predecessors, (370), 261 states have call successors, (370) [2022-07-12 09:33:15,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3391 transitions. [2022-07-12 09:33:15,745 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3391 transitions. Word has length 65 [2022-07-12 09:33:15,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:15,745 INFO L495 AbstractCegarLoop]: Abstraction has 2613 states and 3391 transitions. [2022-07-12 09:33:15,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 09:33:15,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3391 transitions. [2022-07-12 09:33:15,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 09:33:15,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:15,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:15,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:33:15,747 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:15,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:15,747 INFO L85 PathProgramCache]: Analyzing trace with hash 176493782, now seen corresponding path program 1 times [2022-07-12 09:33:15,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:15,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511572089] [2022-07-12 09:33:15,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:15,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:15,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:15,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511572089] [2022-07-12 09:33:15,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511572089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:15,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:15,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:33:15,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834827912] [2022-07-12 09:33:15,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:15,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:33:15,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:15,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:33:15,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:33:15,821 INFO L87 Difference]: Start difference. First operand 2613 states and 3391 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:33:16,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:16,367 INFO L93 Difference]: Finished difference Result 5929 states and 7536 transitions. [2022-07-12 09:33:16,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:33:16,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-12 09:33:16,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:16,379 INFO L225 Difference]: With dead ends: 5929 [2022-07-12 09:33:16,379 INFO L226 Difference]: Without dead ends: 3715 [2022-07-12 09:33:16,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:16,384 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 1187 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:16,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1196 Valid, 1751 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:33:16,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3715 states. [2022-07-12 09:33:16,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3715 to 3447. [2022-07-12 09:33:16,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 2744 states have (on average 1.2940962099125364) internal successors, (3551), 2785 states have internal predecessors, (3551), 357 states have call successors, (357), 286 states have call predecessors, (357), 344 states have return successors, (484), 378 states have call predecessors, (484), 353 states have call successors, (484) [2022-07-12 09:33:16,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4392 transitions. [2022-07-12 09:33:16,526 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4392 transitions. Word has length 66 [2022-07-12 09:33:16,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:16,526 INFO L495 AbstractCegarLoop]: Abstraction has 3447 states and 4392 transitions. [2022-07-12 09:33:16,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:33:16,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4392 transitions. [2022-07-12 09:33:16,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 09:33:16,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:16,527 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] [2022-07-12 09:33:16,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:33:16,528 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:16,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash 138145877, now seen corresponding path program 1 times [2022-07-12 09:33:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:16,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882125152] [2022-07-12 09:33:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:16,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:16,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:16,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:16,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:16,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:16,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:16,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:16,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:16,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:16,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:16,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882125152] [2022-07-12 09:33:16,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882125152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:16,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:16,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:33:16,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877805353] [2022-07-12 09:33:16,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:16,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:33:16,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:16,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:33:16,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:33:16,604 INFO L87 Difference]: Start difference. First operand 3447 states and 4392 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:33:16,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:16,998 INFO L93 Difference]: Finished difference Result 7319 states and 9166 transitions. [2022-07-12 09:33:16,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:33:16,998 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-12 09:33:16,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:17,010 INFO L225 Difference]: With dead ends: 7319 [2022-07-12 09:33:17,011 INFO L226 Difference]: Without dead ends: 4269 [2022-07-12 09:33:17,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:17,016 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 1737 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1771 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:17,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1771 Valid, 1484 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:33:17,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2022-07-12 09:33:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 4001. [2022-07-12 09:33:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4001 states, 3184 states have (on average 1.2848618090452262) internal successors, (4091), 3229 states have internal predecessors, (4091), 413 states have call successors, (413), 336 states have call predecessors, (413), 402 states have return successors, (557), 438 states have call predecessors, (557), 409 states have call successors, (557) [2022-07-12 09:33:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 5061 transitions. [2022-07-12 09:33:17,144 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 5061 transitions. Word has length 72 [2022-07-12 09:33:17,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:17,144 INFO L495 AbstractCegarLoop]: Abstraction has 4001 states and 5061 transitions. [2022-07-12 09:33:17,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 09:33:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 5061 transitions. [2022-07-12 09:33:17,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 09:33:17,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:17,146 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:17,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:33:17,146 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:17,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:17,147 INFO L85 PathProgramCache]: Analyzing trace with hash -529402658, now seen corresponding path program 1 times [2022-07-12 09:33:17,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:17,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57037942] [2022-07-12 09:33:17,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:17,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:17,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:17,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57037942] [2022-07-12 09:33:17,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57037942] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:17,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:17,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:17,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677493176] [2022-07-12 09:33:17,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:17,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:17,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:17,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:17,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:17,194 INFO L87 Difference]: Start difference. First operand 4001 states and 5061 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:33:17,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:17,663 INFO L93 Difference]: Finished difference Result 5087 states and 6356 transitions. [2022-07-12 09:33:17,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 09:33:17,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-07-12 09:33:17,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:17,679 INFO L225 Difference]: With dead ends: 5087 [2022-07-12 09:33:17,679 INFO L226 Difference]: Without dead ends: 5084 [2022-07-12 09:33:17,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-07-12 09:33:17,682 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 2436 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2446 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:17,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2446 Valid, 1462 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 09:33:17,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2022-07-12 09:33:17,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 4463. [2022-07-12 09:33:17,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 3539 states have (on average 1.2735235942356598) internal successors, (4507), 3587 states have internal predecessors, (4507), 463 states have call successors, (463), 380 states have call predecessors, (463), 459 states have return successors, (634), 498 states have call predecessors, (634), 460 states have call successors, (634) [2022-07-12 09:33:17,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 5604 transitions. [2022-07-12 09:33:17,854 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 5604 transitions. Word has length 73 [2022-07-12 09:33:17,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:17,855 INFO L495 AbstractCegarLoop]: Abstraction has 4463 states and 5604 transitions. [2022-07-12 09:33:17,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:33:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 5604 transitions. [2022-07-12 09:33:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 09:33:17,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:17,856 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:17,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:33:17,856 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:17,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:17,857 INFO L85 PathProgramCache]: Analyzing trace with hash 766925247, now seen corresponding path program 1 times [2022-07-12 09:33:17,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:17,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943985546] [2022-07-12 09:33:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:17,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:17,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:17,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:17,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:17,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943985546] [2022-07-12 09:33:17,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943985546] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:33:17,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494761256] [2022-07-12 09:33:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:17,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:33:17,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:33:17,923 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:33:17,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 09:33:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:18,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 09:33:18,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:33:18,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:18,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:33:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:18,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494761256] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:33:18,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:33:18,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-07-12 09:33:18,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156442276] [2022-07-12 09:33:18,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:33:18,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:33:18,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:18,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:33:18,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:33:18,328 INFO L87 Difference]: Start difference. First operand 4463 states and 5604 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 09:33:20,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:20,096 INFO L93 Difference]: Finished difference Result 8781 states and 10813 transitions. [2022-07-12 09:33:20,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-12 09:33:20,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-07-12 09:33:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:20,160 INFO L225 Difference]: With dead ends: 8781 [2022-07-12 09:33:20,161 INFO L226 Difference]: Without dead ends: 8778 [2022-07-12 09:33:20,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-07-12 09:33:20,165 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 1894 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:20,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 3312 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 09:33:20,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8778 states. [2022-07-12 09:33:20,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8778 to 7880. [2022-07-12 09:33:20,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7880 states, 6214 states have (on average 1.2536208561313165) internal successors, (7790), 6297 states have internal predecessors, (7790), 822 states have call successors, (822), 694 states have call predecessors, (822), 842 states have return successors, (1135), 891 states have call predecessors, (1135), 819 states have call successors, (1135) [2022-07-12 09:33:20,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7880 states to 7880 states and 9747 transitions. [2022-07-12 09:33:20,538 INFO L78 Accepts]: Start accepts. Automaton has 7880 states and 9747 transitions. Word has length 74 [2022-07-12 09:33:20,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:20,538 INFO L495 AbstractCegarLoop]: Abstraction has 7880 states and 9747 transitions. [2022-07-12 09:33:20,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-12 09:33:20,539 INFO L276 IsEmpty]: Start isEmpty. Operand 7880 states and 9747 transitions. [2022-07-12 09:33:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 09:33:20,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:20,540 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:20,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 09:33:20,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 09:33:20,755 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:20,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash 889380766, now seen corresponding path program 2 times [2022-07-12 09:33:20,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:20,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777033757] [2022-07-12 09:33:20,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:20,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:20,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:20,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:20,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:20,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:20,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:20,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:20,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:20,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777033757] [2022-07-12 09:33:20,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777033757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:20,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:20,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:33:20,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054457573] [2022-07-12 09:33:20,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:20,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:33:20,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:20,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:33:20,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:33:20,805 INFO L87 Difference]: Start difference. First operand 7880 states and 9747 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:33:21,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:21,245 INFO L93 Difference]: Finished difference Result 10474 states and 12956 transitions. [2022-07-12 09:33:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:33:21,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-12 09:33:21,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:21,261 INFO L225 Difference]: With dead ends: 10474 [2022-07-12 09:33:21,262 INFO L226 Difference]: Without dead ends: 4300 [2022-07-12 09:33:21,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:33:21,268 INFO L413 NwaCegarLoop]: 776 mSDtfsCounter, 1640 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:21,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 1531 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 09:33:21,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4300 states. [2022-07-12 09:33:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4300 to 3292. [2022-07-12 09:33:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3292 states, 2632 states have (on average 1.2693768996960486) internal successors, (3341), 2661 states have internal predecessors, (3341), 341 states have call successors, (341), 276 states have call predecessors, (341), 317 states have return successors, (434), 357 states have call predecessors, (434), 338 states have call successors, (434) [2022-07-12 09:33:21,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3292 states to 3292 states and 4116 transitions. [2022-07-12 09:33:21,380 INFO L78 Accepts]: Start accepts. Automaton has 3292 states and 4116 transitions. Word has length 77 [2022-07-12 09:33:21,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:21,380 INFO L495 AbstractCegarLoop]: Abstraction has 3292 states and 4116 transitions. [2022-07-12 09:33:21,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 09:33:21,381 INFO L276 IsEmpty]: Start isEmpty. Operand 3292 states and 4116 transitions. [2022-07-12 09:33:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 09:33:21,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:21,382 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:21,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:33:21,382 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:21,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:21,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1748274255, now seen corresponding path program 1 times [2022-07-12 09:33:21,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:21,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177758851] [2022-07-12 09:33:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:21,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:21,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:33:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 09:33:21,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:21,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177758851] [2022-07-12 09:33:21,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177758851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:21,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:21,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 09:33:21,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889791418] [2022-07-12 09:33:21,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:21,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 09:33:21,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:21,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 09:33:21,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:33:21,443 INFO L87 Difference]: Start difference. First operand 3292 states and 4116 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:33:22,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:22,401 INFO L93 Difference]: Finished difference Result 9076 states and 11113 transitions. [2022-07-12 09:33:22,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 09:33:22,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-07-12 09:33:22,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:22,413 INFO L225 Difference]: With dead ends: 9076 [2022-07-12 09:33:22,413 INFO L226 Difference]: Without dead ends: 5378 [2022-07-12 09:33:22,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-07-12 09:33:22,419 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 1885 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:22,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 2228 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 09:33:22,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5378 states. [2022-07-12 09:33:22,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5378 to 5118. [2022-07-12 09:33:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5118 states, 4023 states have (on average 1.230673626646781) internal successors, (4951), 4089 states have internal predecessors, (4951), 541 states have call successors, (541), 448 states have call predecessors, (541), 552 states have return successors, (784), 583 states have call predecessors, (784), 538 states have call successors, (784) [2022-07-12 09:33:22,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5118 states to 5118 states and 6276 transitions. [2022-07-12 09:33:22,649 INFO L78 Accepts]: Start accepts. Automaton has 5118 states and 6276 transitions. Word has length 84 [2022-07-12 09:33:22,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:22,649 INFO L495 AbstractCegarLoop]: Abstraction has 5118 states and 6276 transitions. [2022-07-12 09:33:22,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:33:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5118 states and 6276 transitions. [2022-07-12 09:33:22,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 09:33:22,651 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:22,652 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:22,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:33:22,652 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:22,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:22,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1535694468, now seen corresponding path program 1 times [2022-07-12 09:33:22,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:22,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368549190] [2022-07-12 09:33:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:22,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:22,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:22,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:22,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:22,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:22,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:22,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:22,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 09:33:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 09:33:22,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:22,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368549190] [2022-07-12 09:33:22,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368549190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:22,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:22,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 09:33:22,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059150838] [2022-07-12 09:33:22,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:22,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 09:33:22,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:22,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 09:33:22,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:33:22,722 INFO L87 Difference]: Start difference. First operand 5118 states and 6276 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:33:23,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:23,798 INFO L93 Difference]: Finished difference Result 8478 states and 10294 transitions. [2022-07-12 09:33:23,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 09:33:23,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-07-12 09:33:23,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:23,837 INFO L225 Difference]: With dead ends: 8478 [2022-07-12 09:33:23,837 INFO L226 Difference]: Without dead ends: 4279 [2022-07-12 09:33:23,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-12 09:33:23,859 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 2382 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2421 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:23,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2421 Valid, 2596 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-12 09:33:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2022-07-12 09:33:24,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 3858. [2022-07-12 09:33:24,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 3029 states have (on average 1.2231759656652361) internal successors, (3705), 3083 states have internal predecessors, (3705), 406 states have call successors, (406), 330 states have call predecessors, (406), 421 states have return successors, (553), 447 states have call predecessors, (553), 403 states have call successors, (553) [2022-07-12 09:33:24,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 4664 transitions. [2022-07-12 09:33:24,096 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 4664 transitions. Word has length 93 [2022-07-12 09:33:24,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:24,097 INFO L495 AbstractCegarLoop]: Abstraction has 3858 states and 4664 transitions. [2022-07-12 09:33:24,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 09:33:24,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 4664 transitions. [2022-07-12 09:33:24,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 09:33:24,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:24,101 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:24,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:33:24,101 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:24,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:24,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1225012879, now seen corresponding path program 1 times [2022-07-12 09:33:24,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:24,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436481722] [2022-07-12 09:33:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:24,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:24,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:24,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:33:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 09:33:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 09:33:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 09:33:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 09:33:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 09:33:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 09:33:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-12 09:33:24,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:24,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436481722] [2022-07-12 09:33:24,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436481722] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:33:24,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771764378] [2022-07-12 09:33:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:24,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:33:24,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:33:24,236 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:33:24,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 09:33:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 09:33:24,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:33:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 09:33:24,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 09:33:24,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771764378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:24,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 09:33:24,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-07-12 09:33:24,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270918768] [2022-07-12 09:33:24,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:24,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:33:24,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:33:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 09:33:24,372 INFO L87 Difference]: Start difference. First operand 3858 states and 4664 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:33:24,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:24,462 INFO L93 Difference]: Finished difference Result 5733 states and 6903 transitions. [2022-07-12 09:33:24,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:24,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-12 09:33:24,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:24,468 INFO L225 Difference]: With dead ends: 5733 [2022-07-12 09:33:24,468 INFO L226 Difference]: Without dead ends: 2274 [2022-07-12 09:33:24,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-12 09:33:24,473 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 34 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3640 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:24,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3640 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:33:24,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2022-07-12 09:33:24,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2152. [2022-07-12 09:33:24,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2152 states, 1769 states have (on average 1.2521198417184851) internal successors, (2215), 1786 states have internal predecessors, (2215), 195 states have call successors, (195), 144 states have call predecessors, (195), 186 states have return successors, (260), 222 states have call predecessors, (260), 192 states have call successors, (260) [2022-07-12 09:33:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2152 states to 2152 states and 2670 transitions. [2022-07-12 09:33:24,546 INFO L78 Accepts]: Start accepts. Automaton has 2152 states and 2670 transitions. Word has length 145 [2022-07-12 09:33:24,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:24,547 INFO L495 AbstractCegarLoop]: Abstraction has 2152 states and 2670 transitions. [2022-07-12 09:33:24,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-12 09:33:24,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2152 states and 2670 transitions. [2022-07-12 09:33:24,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 09:33:24,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:24,549 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:24,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 09:33:24,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 09:33:24,775 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:24,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:24,775 INFO L85 PathProgramCache]: Analyzing trace with hash -732374681, now seen corresponding path program 1 times [2022-07-12 09:33:24,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:24,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034013093] [2022-07-12 09:33:24,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:24,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:24,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 09:33:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 09:33:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 09:33:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 09:33:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 09:33:24,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 09:33:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-12 09:33:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:24,824 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-12 09:33:24,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:24,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034013093] [2022-07-12 09:33:24,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034013093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:24,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:24,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:33:24,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037347259] [2022-07-12 09:33:24,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:24,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:33:24,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:24,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:33:24,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:33:24,826 INFO L87 Difference]: Start difference. First operand 2152 states and 2670 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 09:33:25,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:25,271 INFO L93 Difference]: Finished difference Result 2200 states and 2720 transitions. [2022-07-12 09:33:25,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:25,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-07-12 09:33:25,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:25,275 INFO L225 Difference]: With dead ends: 2200 [2022-07-12 09:33:25,275 INFO L226 Difference]: Without dead ends: 1826 [2022-07-12 09:33:25,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:33:25,276 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1068 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:25,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1685 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 09:33:25,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2022-07-12 09:33:25,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1781. [2022-07-12 09:33:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1781 states, 1482 states have (on average 1.2746288798920378) internal successors, (1889), 1496 states have internal predecessors, (1889), 154 states have call successors, (154), 109 states have call predecessors, (154), 143 states have return successors, (205), 176 states have call predecessors, (205), 151 states have call successors, (205) [2022-07-12 09:33:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1781 states to 1781 states and 2248 transitions. [2022-07-12 09:33:25,335 INFO L78 Accepts]: Start accepts. Automaton has 1781 states and 2248 transitions. Word has length 147 [2022-07-12 09:33:25,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:25,335 INFO L495 AbstractCegarLoop]: Abstraction has 1781 states and 2248 transitions. [2022-07-12 09:33:25,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-12 09:33:25,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1781 states and 2248 transitions. [2022-07-12 09:33:25,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-12 09:33:25,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:25,338 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:25,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:33:25,338 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:25,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:25,338 INFO L85 PathProgramCache]: Analyzing trace with hash -256970733, now seen corresponding path program 1 times [2022-07-12 09:33:25,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:25,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137597579] [2022-07-12 09:33:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:33:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:33:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 09:33:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 09:33:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-12 09:33:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 09:33:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 09:33:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 09:33:25,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:25,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137597579] [2022-07-12 09:33:25,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137597579] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:25,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:25,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:25,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225233570] [2022-07-12 09:33:25,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:25,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:25,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:25,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:25,418 INFO L87 Difference]: Start difference. First operand 1781 states and 2248 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 09:33:26,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:26,134 INFO L93 Difference]: Finished difference Result 3047 states and 3747 transitions. [2022-07-12 09:33:26,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 09:33:26,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-07-12 09:33:26,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:26,143 INFO L225 Difference]: With dead ends: 3047 [2022-07-12 09:33:26,143 INFO L226 Difference]: Without dead ends: 1754 [2022-07-12 09:33:26,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:26,148 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 681 mSDsluCounter, 1777 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:26,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 2525 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 09:33:26,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1754 states. [2022-07-12 09:33:26,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1754 to 1670. [2022-07-12 09:33:26,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1670 states, 1395 states have (on average 1.2845878136200717) internal successors, (1792), 1409 states have internal predecessors, (1792), 142 states have call successors, (142), 99 states have call predecessors, (142), 131 states have return successors, (187), 162 states have call predecessors, (187), 139 states have call successors, (187) [2022-07-12 09:33:26,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1670 states to 1670 states and 2121 transitions. [2022-07-12 09:33:26,216 INFO L78 Accepts]: Start accepts. Automaton has 1670 states and 2121 transitions. Word has length 159 [2022-07-12 09:33:26,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:26,217 INFO L495 AbstractCegarLoop]: Abstraction has 1670 states and 2121 transitions. [2022-07-12 09:33:26,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 09:33:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1670 states and 2121 transitions. [2022-07-12 09:33:26,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-12 09:33:26,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:26,219 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:26,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:33:26,219 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:26,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:26,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1070811765, now seen corresponding path program 1 times [2022-07-12 09:33:26,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:26,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072950022] [2022-07-12 09:33:26,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:26,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 09:33:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 09:33:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 09:33:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 09:33:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 09:33:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 09:33:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 09:33:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 09:33:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 09:33:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 09:33:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 09:33:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 09:33:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 09:33:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,310 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 09:33:26,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:26,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072950022] [2022-07-12 09:33:26,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072950022] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 09:33:26,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596006741] [2022-07-12 09:33:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:26,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 09:33:26,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:33:26,327 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 09:33:26,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 09:33:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:26,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 09:33:26,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 09:33:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 09:33:26,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 09:33:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-12 09:33:26,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596006741] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 09:33:26,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 09:33:26,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-07-12 09:33:26,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552858451] [2022-07-12 09:33:26,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 09:33:26,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 09:33:26,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:26,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 09:33:26,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-12 09:33:26,731 INFO L87 Difference]: Start difference. First operand 1670 states and 2121 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-12 09:33:27,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:27,932 INFO L93 Difference]: Finished difference Result 3406 states and 4260 transitions. [2022-07-12 09:33:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-12 09:33:27,933 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-07-12 09:33:27,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:27,939 INFO L225 Difference]: With dead ends: 3406 [2022-07-12 09:33:27,939 INFO L226 Difference]: Without dead ends: 2061 [2022-07-12 09:33:27,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-07-12 09:33:27,942 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 2218 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2250 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:27,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2250 Valid, 2420 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 09:33:27,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2061 states. [2022-07-12 09:33:28,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2061 to 1948. [2022-07-12 09:33:28,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1598 states have (on average 1.2484355444305382) internal successors, (1995), 1613 states have internal predecessors, (1995), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-12 09:33:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2433 transitions. [2022-07-12 09:33:28,112 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2433 transitions. Word has length 162 [2022-07-12 09:33:28,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:28,112 INFO L495 AbstractCegarLoop]: Abstraction has 1948 states and 2433 transitions. [2022-07-12 09:33:28,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-07-12 09:33:28,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2433 transitions. [2022-07-12 09:33:28,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:28,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:28,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:28,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 09:33:28,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 09:33:28,315 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:28,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:28,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1451778894, now seen corresponding path program 1 times [2022-07-12 09:33:28,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:28,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996420780] [2022-07-12 09:33:28,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:28,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:28,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:28,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:28,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:28,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:28,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:28,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:28,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:28,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:28,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:28,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:28,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996420780] [2022-07-12 09:33:28,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996420780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:28,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:28,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:33:28,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610312884] [2022-07-12 09:33:28,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:28,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:33:28,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:28,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:33:28,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:33:28,407 INFO L87 Difference]: Start difference. First operand 1948 states and 2433 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:29,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:29,689 INFO L93 Difference]: Finished difference Result 2465 states and 3271 transitions. [2022-07-12 09:33:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:29,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:29,693 INFO L225 Difference]: With dead ends: 2465 [2022-07-12 09:33:29,694 INFO L226 Difference]: Without dead ends: 2090 [2022-07-12 09:33:29,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:33:29,695 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 1143 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:29,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 1368 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:33:29,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-07-12 09:33:29,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1948. [2022-07-12 09:33:29,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1598 states have (on average 1.2478097622027535) internal successors, (1994), 1613 states have internal predecessors, (1994), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-12 09:33:29,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2432 transitions. [2022-07-12 09:33:29,821 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2432 transitions. Word has length 179 [2022-07-12 09:33:29,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:29,821 INFO L495 AbstractCegarLoop]: Abstraction has 1948 states and 2432 transitions. [2022-07-12 09:33:29,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:29,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2432 transitions. [2022-07-12 09:33:29,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:29,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:29,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:29,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 09:33:29,824 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:29,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:29,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2141610384, now seen corresponding path program 1 times [2022-07-12 09:33:29,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:29,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890331692] [2022-07-12 09:33:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:29,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:29,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:29,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:29,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:29,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:29,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:29,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890331692] [2022-07-12 09:33:29,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890331692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:29,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:29,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:33:29,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008691481] [2022-07-12 09:33:29,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:29,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:33:29,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:29,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:33:29,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:33:29,943 INFO L87 Difference]: Start difference. First operand 1948 states and 2432 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:31,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:31,363 INFO L93 Difference]: Finished difference Result 2457 states and 3254 transitions. [2022-07-12 09:33:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:31,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:31,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:31,368 INFO L225 Difference]: With dead ends: 2457 [2022-07-12 09:33:31,369 INFO L226 Difference]: Without dead ends: 2090 [2022-07-12 09:33:31,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 09:33:31,371 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 1134 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1366 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:31,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1366 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:33:31,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-07-12 09:33:31,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1948. [2022-07-12 09:33:31,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1598 states have (on average 1.2471839799749687) internal successors, (1993), 1613 states have internal predecessors, (1993), 182 states have call successors, (182), 137 states have call predecessors, (182), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-07-12 09:33:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2431 transitions. [2022-07-12 09:33:31,501 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2431 transitions. Word has length 179 [2022-07-12 09:33:31,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:31,501 INFO L495 AbstractCegarLoop]: Abstraction has 1948 states and 2431 transitions. [2022-07-12 09:33:31,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:31,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2431 transitions. [2022-07-12 09:33:31,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:31,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:31,503 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:31,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 09:33:31,504 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:31,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:31,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1367359022, now seen corresponding path program 1 times [2022-07-12 09:33:31,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:31,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219621652] [2022-07-12 09:33:31,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:31,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:31,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:31,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:31,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:31,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:31,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:31,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:31,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219621652] [2022-07-12 09:33:31,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219621652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:31,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:31,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 09:33:31,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89357597] [2022-07-12 09:33:31,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:31,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 09:33:31,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:31,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 09:33:31,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 09:33:31,606 INFO L87 Difference]: Start difference. First operand 1948 states and 2431 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:33,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:33,867 INFO L93 Difference]: Finished difference Result 2978 states and 4102 transitions. [2022-07-12 09:33:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:33:33,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:33,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:33,872 INFO L225 Difference]: With dead ends: 2978 [2022-07-12 09:33:33,872 INFO L226 Difference]: Without dead ends: 2614 [2022-07-12 09:33:33,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:33,874 INFO L413 NwaCegarLoop]: 833 mSDtfsCounter, 1786 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:33,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1815 Valid, 1969 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 09:33:33,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2022-07-12 09:33:33,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2329. [2022-07-12 09:33:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2329 states, 1951 states have (on average 1.3116350589441312) internal successors, (2559), 1967 states have internal predecessors, (2559), 203 states have call successors, (203), 143 states have call predecessors, (203), 173 states have return successors, (280), 219 states have call predecessors, (280), 200 states have call successors, (280) [2022-07-12 09:33:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2329 states to 2329 states and 3042 transitions. [2022-07-12 09:33:33,992 INFO L78 Accepts]: Start accepts. Automaton has 2329 states and 3042 transitions. Word has length 179 [2022-07-12 09:33:33,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:33,992 INFO L495 AbstractCegarLoop]: Abstraction has 2329 states and 3042 transitions. [2022-07-12 09:33:33,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2329 states and 3042 transitions. [2022-07-12 09:33:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:33,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:33,994 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:33,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 09:33:33,995 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:33,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1541868494, now seen corresponding path program 1 times [2022-07-12 09:33:33,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:33,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614132402] [2022-07-12 09:33:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:34,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:34,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:34,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614132402] [2022-07-12 09:33:34,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614132402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:34,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:34,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:34,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520175689] [2022-07-12 09:33:34,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:34,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:34,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:34,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:34,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:34,105 INFO L87 Difference]: Start difference. First operand 2329 states and 3042 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:36,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:36,709 INFO L93 Difference]: Finished difference Result 3903 states and 5602 transitions. [2022-07-12 09:33:36,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:33:36,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:36,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:36,721 INFO L225 Difference]: With dead ends: 3903 [2022-07-12 09:33:36,721 INFO L226 Difference]: Without dead ends: 3158 [2022-07-12 09:33:36,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:33:36,725 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 1817 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 3326 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1846 SdHoareTripleChecker+Valid, 3302 SdHoareTripleChecker+Invalid, 3447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 3326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:36,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1846 Valid, 3302 Invalid, 3447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 3326 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 09:33:36,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2022-07-12 09:33:36,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 2684. [2022-07-12 09:33:36,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2278 states have (on average 1.3489903424056189) internal successors, (3073), 2295 states have internal predecessors, (3073), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-12 09:33:36,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 3600 transitions. [2022-07-12 09:33:36,880 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 3600 transitions. Word has length 179 [2022-07-12 09:33:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:36,880 INFO L495 AbstractCegarLoop]: Abstraction has 2684 states and 3600 transitions. [2022-07-12 09:33:36,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 3600 transitions. [2022-07-12 09:33:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:36,882 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:36,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:36,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 09:33:36,883 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:36,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:36,883 INFO L85 PathProgramCache]: Analyzing trace with hash 930599436, now seen corresponding path program 1 times [2022-07-12 09:33:36,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:36,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482722166] [2022-07-12 09:33:36,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:36,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:36,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:36,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:36,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482722166] [2022-07-12 09:33:36,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482722166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:36,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:36,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:36,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615151310] [2022-07-12 09:33:36,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:36,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:36,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:36,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:36,985 INFO L87 Difference]: Start difference. First operand 2684 states and 3600 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:38,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:38,298 INFO L93 Difference]: Finished difference Result 4274 states and 6198 transitions. [2022-07-12 09:33:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:38,299 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:38,309 INFO L225 Difference]: With dead ends: 4274 [2022-07-12 09:33:38,309 INFO L226 Difference]: Without dead ends: 3174 [2022-07-12 09:33:38,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:38,312 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 1565 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1440 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:38,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 1690 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1440 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 09:33:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2022-07-12 09:33:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2684. [2022-07-12 09:33:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2278 states have (on average 1.3476733977172959) internal successors, (3070), 2295 states have internal predecessors, (3070), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-12 09:33:38,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 3597 transitions. [2022-07-12 09:33:38,463 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 3597 transitions. Word has length 179 [2022-07-12 09:33:38,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:38,463 INFO L495 AbstractCegarLoop]: Abstraction has 2684 states and 3597 transitions. [2022-07-12 09:33:38,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:38,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 3597 transitions. [2022-07-12 09:33:38,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:38,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:38,466 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:38,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 09:33:38,466 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:38,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:38,466 INFO L85 PathProgramCache]: Analyzing trace with hash -474592242, now seen corresponding path program 1 times [2022-07-12 09:33:38,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:38,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120919076] [2022-07-12 09:33:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:38,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:38,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:38,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:38,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:38,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:38,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:38,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120919076] [2022-07-12 09:33:38,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120919076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:38,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:38,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:38,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572483746] [2022-07-12 09:33:38,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:38,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:38,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:38,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:38,574 INFO L87 Difference]: Start difference. First operand 2684 states and 3597 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:39,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:39,996 INFO L93 Difference]: Finished difference Result 4270 states and 6181 transitions. [2022-07-12 09:33:39,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:39,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:39,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:40,002 INFO L225 Difference]: With dead ends: 4270 [2022-07-12 09:33:40,002 INFO L226 Difference]: Without dead ends: 3170 [2022-07-12 09:33:40,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:40,005 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 1563 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:40,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1593 Valid, 1686 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:33:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2022-07-12 09:33:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2684. [2022-07-12 09:33:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 2278 states have (on average 1.3463564530289729) internal successors, (3067), 2295 states have internal predecessors, (3067), 224 states have call successors, (224), 149 states have call predecessors, (224), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-07-12 09:33:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 3594 transitions. [2022-07-12 09:33:40,184 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 3594 transitions. Word has length 179 [2022-07-12 09:33:40,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:40,184 INFO L495 AbstractCegarLoop]: Abstraction has 2684 states and 3594 transitions. [2022-07-12 09:33:40,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:40,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 3594 transitions. [2022-07-12 09:33:40,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:40,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:40,187 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:40,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 09:33:40,187 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:40,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1419741644, now seen corresponding path program 1 times [2022-07-12 09:33:40,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:40,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318921892] [2022-07-12 09:33:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:40,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:40,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:40,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:40,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:40,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:40,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:40,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:40,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:40,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318921892] [2022-07-12 09:33:40,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318921892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:40,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:40,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:40,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134955392] [2022-07-12 09:33:40,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:40,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:40,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:40,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:40,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:40,304 INFO L87 Difference]: Start difference. First operand 2684 states and 3594 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:42,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:42,865 INFO L93 Difference]: Finished difference Result 5257 states and 7744 transitions. [2022-07-12 09:33:42,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:33:42,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:42,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:42,878 INFO L225 Difference]: With dead ends: 5257 [2022-07-12 09:33:42,878 INFO L226 Difference]: Without dead ends: 4157 [2022-07-12 09:33:42,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:33:42,881 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 1799 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1828 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 3390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:42,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1828 Valid, 3283 Invalid, 3390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 09:33:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2022-07-12 09:33:43,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 3403. [2022-07-12 09:33:43,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3403 states, 2941 states have (on average 1.3954437266235975) internal successors, (4104), 2960 states have internal predecessors, (4104), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-07-12 09:33:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 4723 transitions. [2022-07-12 09:33:43,080 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 4723 transitions. Word has length 179 [2022-07-12 09:33:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:43,081 INFO L495 AbstractCegarLoop]: Abstraction has 3403 states and 4723 transitions. [2022-07-12 09:33:43,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 4723 transitions. [2022-07-12 09:33:43,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:43,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:43,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:43,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 09:33:43,084 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:43,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:43,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1428644786, now seen corresponding path program 1 times [2022-07-12 09:33:43,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:43,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052408191] [2022-07-12 09:33:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:43,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:43,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:43,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:43,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:43,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:43,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:43,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:43,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052408191] [2022-07-12 09:33:43,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052408191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:43,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:43,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:43,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313530395] [2022-07-12 09:33:43,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:43,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:43,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:43,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:43,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:43,180 INFO L87 Difference]: Start difference. First operand 3403 states and 4723 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:44,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:44,685 INFO L93 Difference]: Finished difference Result 5962 states and 8860 transitions. [2022-07-12 09:33:44,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:44,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:44,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:44,695 INFO L225 Difference]: With dead ends: 5962 [2022-07-12 09:33:44,695 INFO L226 Difference]: Without dead ends: 4143 [2022-07-12 09:33:44,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:44,699 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 1344 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:44,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1374 Valid, 1933 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:33:44,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2022-07-12 09:33:44,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 3403. [2022-07-12 09:33:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3403 states, 2941 states have (on average 1.393743624617477) internal successors, (4099), 2960 states have internal predecessors, (4099), 266 states have call successors, (266), 161 states have call predecessors, (266), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-07-12 09:33:44,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 4718 transitions. [2022-07-12 09:33:44,917 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 4718 transitions. Word has length 179 [2022-07-12 09:33:44,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:44,917 INFO L495 AbstractCegarLoop]: Abstraction has 3403 states and 4718 transitions. [2022-07-12 09:33:44,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 4718 transitions. [2022-07-12 09:33:44,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:44,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:44,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:44,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 09:33:44,922 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:44,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:44,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1943155084, now seen corresponding path program 1 times [2022-07-12 09:33:44,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:44,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104468784] [2022-07-12 09:33:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:44,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:44,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:45,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:45,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:45,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104468784] [2022-07-12 09:33:45,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104468784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:45,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:45,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:45,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734507601] [2022-07-12 09:33:45,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:45,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:45,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:45,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:45,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:45,061 INFO L87 Difference]: Start difference. First operand 3403 states and 4718 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:48,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:48,278 INFO L93 Difference]: Finished difference Result 7880 states and 11881 transitions. [2022-07-12 09:33:48,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:33:48,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:48,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:48,290 INFO L225 Difference]: With dead ends: 7880 [2022-07-12 09:33:48,290 INFO L226 Difference]: Without dead ends: 6061 [2022-07-12 09:33:48,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:33:48,295 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 1890 mSDsluCounter, 1471 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 2324 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:48,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 2324 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 09:33:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2022-07-12 09:33:48,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 4845. [2022-07-12 09:33:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4845 states, 4271 states have (on average 1.444860688363381) internal successors, (6171), 4294 states have internal predecessors, (6171), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-12 09:33:48,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 6980 transitions. [2022-07-12 09:33:48,638 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 6980 transitions. Word has length 179 [2022-07-12 09:33:48,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:48,638 INFO L495 AbstractCegarLoop]: Abstraction has 4845 states and 6980 transitions. [2022-07-12 09:33:48,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:48,639 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 6980 transitions. [2022-07-12 09:33:48,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:48,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:48,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:48,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 09:33:48,642 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:48,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:48,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1965949810, now seen corresponding path program 1 times [2022-07-12 09:33:48,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:48,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275968044] [2022-07-12 09:33:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:48,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:48,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:48,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:48,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:48,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:48,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:48,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:48,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275968044] [2022-07-12 09:33:48,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275968044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:48,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:48,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:48,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364998879] [2022-07-12 09:33:48,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:48,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:48,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:48,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:48,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:48,743 INFO L87 Difference]: Start difference. First operand 4845 states and 6980 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:50,654 INFO L93 Difference]: Finished difference Result 9342 states and 14211 transitions. [2022-07-12 09:33:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:50,655 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:50,666 INFO L225 Difference]: With dead ends: 9342 [2022-07-12 09:33:50,666 INFO L226 Difference]: Without dead ends: 6081 [2022-07-12 09:33:50,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:50,672 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1345 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:50,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 1924 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:33:50,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6081 states. [2022-07-12 09:33:50,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6081 to 4845. [2022-07-12 09:33:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4845 states, 4271 states have (on average 1.442753453523765) internal successors, (6162), 4294 states have internal predecessors, (6162), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-12 09:33:51,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 6971 transitions. [2022-07-12 09:33:51,005 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 6971 transitions. Word has length 179 [2022-07-12 09:33:51,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:51,005 INFO L495 AbstractCegarLoop]: Abstraction has 4845 states and 6971 transitions. [2022-07-12 09:33:51,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:51,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 6971 transitions. [2022-07-12 09:33:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:51,008 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:51,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:51,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 09:33:51,009 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:51,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:51,009 INFO L85 PathProgramCache]: Analyzing trace with hash 2064369996, now seen corresponding path program 1 times [2022-07-12 09:33:51,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:51,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145970995] [2022-07-12 09:33:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:51,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:51,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:51,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:51,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:51,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:51,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:51,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145970995] [2022-07-12 09:33:51,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145970995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:51,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:51,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:51,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70269873] [2022-07-12 09:33:51,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:51,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:51,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:51,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:51,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:51,110 INFO L87 Difference]: Start difference. First operand 4845 states and 6971 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:52,836 INFO L93 Difference]: Finished difference Result 9322 states and 14144 transitions. [2022-07-12 09:33:52,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:52,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:52,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:52,848 INFO L225 Difference]: With dead ends: 9322 [2022-07-12 09:33:52,848 INFO L226 Difference]: Without dead ends: 6061 [2022-07-12 09:33:52,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:52,855 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1560 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 1383 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:52,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 1664 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1383 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:33:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2022-07-12 09:33:53,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 4845. [2022-07-12 09:33:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4845 states, 4271 states have (on average 1.4406462186841489) internal successors, (6153), 4294 states have internal predecessors, (6153), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-12 09:33:53,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 6962 transitions. [2022-07-12 09:33:53,236 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 6962 transitions. Word has length 179 [2022-07-12 09:33:53,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:53,236 INFO L495 AbstractCegarLoop]: Abstraction has 4845 states and 6962 transitions. [2022-07-12 09:33:53,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:53,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 6962 transitions. [2022-07-12 09:33:53,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:53,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:53,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:53,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 09:33:53,240 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:53,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:53,240 INFO L85 PathProgramCache]: Analyzing trace with hash 741191050, now seen corresponding path program 1 times [2022-07-12 09:33:53,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:53,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208111161] [2022-07-12 09:33:53,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:53,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:53,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:53,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:53,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:53,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:53,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:53,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:53,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:53,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:53,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208111161] [2022-07-12 09:33:53,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208111161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:53,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:53,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:53,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865104211] [2022-07-12 09:33:53,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:53,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:53,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:53,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:53,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:53,347 INFO L87 Difference]: Start difference. First operand 4845 states and 6962 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:55,318 INFO L93 Difference]: Finished difference Result 9312 states and 14097 transitions. [2022-07-12 09:33:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:33:55,319 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:55,328 INFO L225 Difference]: With dead ends: 9312 [2022-07-12 09:33:55,329 INFO L226 Difference]: Without dead ends: 6051 [2022-07-12 09:33:55,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:33:55,333 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 1340 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:55,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 1914 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-12 09:33:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6051 states. [2022-07-12 09:33:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6051 to 4845. [2022-07-12 09:33:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4845 states, 4271 states have (on average 1.4385389838445328) internal successors, (6144), 4294 states have internal predecessors, (6144), 350 states have call successors, (350), 185 states have call predecessors, (350), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-07-12 09:33:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 6953 transitions. [2022-07-12 09:33:55,690 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 6953 transitions. Word has length 179 [2022-07-12 09:33:55,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:33:55,691 INFO L495 AbstractCegarLoop]: Abstraction has 4845 states and 6953 transitions. [2022-07-12 09:33:55,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:55,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 6953 transitions. [2022-07-12 09:33:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:33:55,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:33:55,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:33:55,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 09:33:55,694 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:33:55,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:33:55,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1656796788, now seen corresponding path program 1 times [2022-07-12 09:33:55,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:33:55,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762418444] [2022-07-12 09:33:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:33:55,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:33:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:55,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:33:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:55,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:33:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:55,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:33:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:55,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:33:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:33:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:33:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:33:55,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:33:55,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762418444] [2022-07-12 09:33:55,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762418444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:33:55,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:33:55,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:33:55,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729080702] [2022-07-12 09:33:55,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:33:55,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:33:55,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:33:55,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:33:55,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:33:55,812 INFO L87 Difference]: Start difference. First operand 4845 states and 6953 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:33:59,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:33:59,529 INFO L93 Difference]: Finished difference Result 13096 states and 20005 transitions. [2022-07-12 09:33:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 09:33:59,529 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:33:59,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:33:59,548 INFO L225 Difference]: With dead ends: 13096 [2022-07-12 09:33:59,548 INFO L226 Difference]: Without dead ends: 9835 [2022-07-12 09:33:59,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:33:59,555 INFO L413 NwaCegarLoop]: 1083 mSDtfsCounter, 1768 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 3163 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 3288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:33:59,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 3243 Invalid, 3288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3163 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 09:33:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9835 states. [2022-07-12 09:34:00,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9835 to 7770. [2022-07-12 09:34:00,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7770 states, 6972 states have (on average 1.4799196787148594) internal successors, (10318), 7003 states have internal predecessors, (10318), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-07-12 09:34:00,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 11525 transitions. [2022-07-12 09:34:00,222 INFO L78 Accepts]: Start accepts. Automaton has 7770 states and 11525 transitions. Word has length 179 [2022-07-12 09:34:00,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:34:00,222 INFO L495 AbstractCegarLoop]: Abstraction has 7770 states and 11525 transitions. [2022-07-12 09:34:00,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:34:00,223 INFO L276 IsEmpty]: Start isEmpty. Operand 7770 states and 11525 transitions. [2022-07-12 09:34:00,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:34:00,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:34:00,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:34:00,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 09:34:00,227 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:34:00,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:34:00,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1318509238, now seen corresponding path program 1 times [2022-07-12 09:34:00,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:34:00,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453657519] [2022-07-12 09:34:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:34:00,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:34:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:00,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:34:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:00,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:34:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:00,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:34:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:34:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:34:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:34:00,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:34:00,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453657519] [2022-07-12 09:34:00,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453657519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:34:00,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:34:00,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:34:00,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569331219] [2022-07-12 09:34:00,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:34:00,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:34:00,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:34:00,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:34:00,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:34:00,331 INFO L87 Difference]: Start difference. First operand 7770 states and 11525 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:34:02,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:34:02,630 INFO L93 Difference]: Finished difference Result 16078 states and 24764 transitions. [2022-07-12 09:34:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:34:02,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:34:02,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:34:02,645 INFO L225 Difference]: With dead ends: 16078 [2022-07-12 09:34:02,645 INFO L226 Difference]: Without dead ends: 9892 [2022-07-12 09:34:02,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 09:34:02,653 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 1555 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 1360 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:34:02,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 1651 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1360 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 09:34:02,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9892 states. [2022-07-12 09:34:03,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9892 to 7770. [2022-07-12 09:34:03,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7770 states, 6972 states have (on average 1.4774813539873781) internal successors, (10301), 7003 states have internal predecessors, (10301), 518 states have call successors, (518), 233 states have call predecessors, (518), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-07-12 09:34:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7770 states to 7770 states and 11508 transitions. [2022-07-12 09:34:03,307 INFO L78 Accepts]: Start accepts. Automaton has 7770 states and 11508 transitions. Word has length 179 [2022-07-12 09:34:03,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:34:03,307 INFO L495 AbstractCegarLoop]: Abstraction has 7770 states and 11508 transitions. [2022-07-12 09:34:03,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:34:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 7770 states and 11508 transitions. [2022-07-12 09:34:03,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:34:03,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:34:03,311 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:34:03,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 09:34:03,311 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:34:03,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:34:03,311 INFO L85 PathProgramCache]: Analyzing trace with hash -891954740, now seen corresponding path program 1 times [2022-07-12 09:34:03,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:34:03,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906373901] [2022-07-12 09:34:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:34:03,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:34:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:34:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:03,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:34:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:03,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:34:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:03,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:34:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:03,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:34:03,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:34:03,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:34:03,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906373901] [2022-07-12 09:34:03,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906373901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:34:03,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:34:03,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:34:03,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052747816] [2022-07-12 09:34:03,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:34:03,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:34:03,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:34:03,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:34:03,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:34:03,414 INFO L87 Difference]: Start difference. First operand 7770 states and 11508 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:34:09,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:34:09,173 INFO L93 Difference]: Finished difference Result 26233 states and 40561 transitions. [2022-07-12 09:34:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:34:09,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:34:09,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:34:09,210 INFO L225 Difference]: With dead ends: 26233 [2022-07-12 09:34:09,210 INFO L226 Difference]: Without dead ends: 20047 [2022-07-12 09:34:09,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:34:09,224 INFO L413 NwaCegarLoop]: 1069 mSDtfsCounter, 2206 mSDsluCounter, 2149 mSDsCounter, 0 mSdLazyCounter, 3128 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:34:09,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 3218 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3128 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:34:09,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20047 states. [2022-07-12 09:34:10,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20047 to 13436. [2022-07-12 09:34:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13436 states, 12206 states have (on average 1.5022939537932165) internal successors, (18337), 12253 states have internal predecessors, (18337), 838 states have call successors, (838), 329 states have call predecessors, (838), 390 states have return successors, (1187), 885 states have call predecessors, (1187), 835 states have call successors, (1187) [2022-07-12 09:34:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13436 states to 13436 states and 20362 transitions. [2022-07-12 09:34:10,523 INFO L78 Accepts]: Start accepts. Automaton has 13436 states and 20362 transitions. Word has length 179 [2022-07-12 09:34:10,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:34:10,523 INFO L495 AbstractCegarLoop]: Abstraction has 13436 states and 20362 transitions. [2022-07-12 09:34:10,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:34:10,524 INFO L276 IsEmpty]: Start isEmpty. Operand 13436 states and 20362 transitions. [2022-07-12 09:34:10,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:34:10,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:34:10,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:34:10,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-12 09:34:10,529 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:34:10,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:34:10,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1432384246, now seen corresponding path program 1 times [2022-07-12 09:34:10,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:34:10,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836020506] [2022-07-12 09:34:10,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:34:10,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:34:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:10,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:34:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:10,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:34:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:10,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:34:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:10,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:34:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:10,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:34:10,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:34:10,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:34:10,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836020506] [2022-07-12 09:34:10,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836020506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:34:10,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:34:10,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:34:10,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297085953] [2022-07-12 09:34:10,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:34:10,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:34:10,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:34:10,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:34:10,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:34:10,632 INFO L87 Difference]: Start difference. First operand 13436 states and 20362 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:34:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:34:19,125 INFO L93 Difference]: Finished difference Result 48857 states and 76185 transitions. [2022-07-12 09:34:19,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:34:19,125 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:34:19,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:34:19,219 INFO L225 Difference]: With dead ends: 48857 [2022-07-12 09:34:19,219 INFO L226 Difference]: Without dead ends: 37005 [2022-07-12 09:34:19,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:34:19,254 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 1945 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 3337 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1973 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 3508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:34:19,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1973 Valid, 2463 Invalid, 3508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3337 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:34:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37005 states. [2022-07-12 09:34:21,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37005 to 24909. [2022-07-12 09:34:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24909 states, 22831 states have (on average 1.5201699443738776) internal successors, (34707), 22910 states have internal predecessors, (34707), 1462 states have call successors, (1462), 521 states have call predecessors, (1462), 614 states have return successors, (2329), 1541 states have call predecessors, (2329), 1459 states have call successors, (2329) [2022-07-12 09:34:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24909 states to 24909 states and 38498 transitions. [2022-07-12 09:34:21,915 INFO L78 Accepts]: Start accepts. Automaton has 24909 states and 38498 transitions. Word has length 179 [2022-07-12 09:34:21,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:34:21,915 INFO L495 AbstractCegarLoop]: Abstraction has 24909 states and 38498 transitions. [2022-07-12 09:34:21,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:34:21,915 INFO L276 IsEmpty]: Start isEmpty. Operand 24909 states and 38498 transitions. [2022-07-12 09:34:21,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:34:21,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:34:21,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:34:21,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-12 09:34:21,925 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:34:21,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:34:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1588364788, now seen corresponding path program 1 times [2022-07-12 09:34:21,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:34:21,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680159016] [2022-07-12 09:34:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:34:21,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:34:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:21,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:34:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:21,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:34:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:22,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:34:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:22,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:34:22,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:22,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:34:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:34:22,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:34:22,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680159016] [2022-07-12 09:34:22,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680159016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:34:22,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:34:22,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:34:22,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564938620] [2022-07-12 09:34:22,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:34:22,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:34:22,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:34:22,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:34:22,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:34:22,040 INFO L87 Difference]: Start difference. First operand 24909 states and 38498 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:34:36,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:34:36,216 INFO L93 Difference]: Finished difference Result 93960 states and 147967 transitions. [2022-07-12 09:34:36,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:34:36,217 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:34:36,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:34:36,419 INFO L225 Difference]: With dead ends: 93960 [2022-07-12 09:34:36,419 INFO L226 Difference]: Without dead ends: 70635 [2022-07-12 09:34:36,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:34:36,484 INFO L413 NwaCegarLoop]: 1058 mSDtfsCounter, 2130 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 3110 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 3210 SdHoareTripleChecker+Invalid, 3243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:34:36,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 3210 Invalid, 3243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3110 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-12 09:34:36,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70635 states. [2022-07-12 09:34:41,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70635 to 47822. [2022-07-12 09:34:41,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47822 states, 44080 states have (on average 1.5307849364791288) internal successors, (67477), 44223 states have internal predecessors, (67477), 2678 states have call successors, (2678), 905 states have call predecessors, (2678), 1062 states have return successors, (5067), 2821 states have call predecessors, (5067), 2675 states have call successors, (5067) [2022-07-12 09:34:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47822 states to 47822 states and 75222 transitions. [2022-07-12 09:34:42,097 INFO L78 Accepts]: Start accepts. Automaton has 47822 states and 75222 transitions. Word has length 179 [2022-07-12 09:34:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:34:42,098 INFO L495 AbstractCegarLoop]: Abstraction has 47822 states and 75222 transitions. [2022-07-12 09:34:42,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:34:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 47822 states and 75222 transitions. [2022-07-12 09:34:42,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:34:42,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:34:42,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:34:42,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-12 09:34:42,114 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:34:42,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:34:42,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1177754422, now seen corresponding path program 1 times [2022-07-12 09:34:42,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:34:42,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061892958] [2022-07-12 09:34:42,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:34:42,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:34:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:42,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:34:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:42,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:34:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:42,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:34:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:42,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:34:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:42,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:34:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:34:42,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:34:42,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:34:42,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061892958] [2022-07-12 09:34:42,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061892958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:34:42,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:34:42,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:34:42,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008530912] [2022-07-12 09:34:42,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:34:42,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:34:42,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:34:42,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:34:42,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:34:42,248 INFO L87 Difference]: Start difference. First operand 47822 states and 75222 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:07,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:35:07,785 INFO L93 Difference]: Finished difference Result 181061 states and 288769 transitions. [2022-07-12 09:35:07,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:35:07,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:35:07,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:35:08,282 INFO L225 Difference]: With dead ends: 181061 [2022-07-12 09:35:08,282 INFO L226 Difference]: Without dead ends: 134823 [2022-07-12 09:35:08,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:35:08,437 INFO L413 NwaCegarLoop]: 1173 mSDtfsCounter, 1829 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 3501 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 3631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:35:08,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1857 Valid, 3325 Invalid, 3631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3501 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:35:08,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134823 states. [2022-07-12 09:35:20,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134823 to 93712. [2022-07-12 09:35:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93712 states, 86706 states have (on average 1.5378059188522133) internal successors, (133337), 86977 states have internal predecessors, (133337), 5046 states have call successors, (5046), 1673 states have call predecessors, (5046), 1958 states have return successors, (11937), 5317 states have call predecessors, (11937), 5043 states have call successors, (11937) [2022-07-12 09:35:20,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93712 states to 93712 states and 150320 transitions. [2022-07-12 09:35:20,698 INFO L78 Accepts]: Start accepts. Automaton has 93712 states and 150320 transitions. Word has length 179 [2022-07-12 09:35:20,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:35:20,698 INFO L495 AbstractCegarLoop]: Abstraction has 93712 states and 150320 transitions. [2022-07-12 09:35:20,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:35:20,699 INFO L276 IsEmpty]: Start isEmpty. Operand 93712 states and 150320 transitions. [2022-07-12 09:35:20,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-07-12 09:35:20,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:35:20,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:35:20,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-12 09:35:20,728 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:35:20,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:35:20,728 INFO L85 PathProgramCache]: Analyzing trace with hash 981329672, now seen corresponding path program 1 times [2022-07-12 09:35:20,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:35:20,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420049065] [2022-07-12 09:35:20,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:35:20,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:35:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 09:35:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 09:35:20,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 09:35:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-12 09:35:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 09:35:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:35:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:35:20,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:35:20,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420049065] [2022-07-12 09:35:20,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420049065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:35:20,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:35:20,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 09:35:20,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473983371] [2022-07-12 09:35:20,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:35:20,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 09:35:20,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:35:20,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 09:35:20,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:35:20,845 INFO L87 Difference]: Start difference. First operand 93712 states and 150320 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 09:36:10,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:36:10,983 INFO L93 Difference]: Finished difference Result 354949 states and 575513 transitions. [2022-07-12 09:36:10,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 09:36:10,983 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-07-12 09:36:10,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:36:12,271 INFO L225 Difference]: With dead ends: 354949 [2022-07-12 09:36:12,271 INFO L226 Difference]: Without dead ends: 262821 [2022-07-12 09:36:12,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 09:36:12,545 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 2007 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 3084 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2049 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 3217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-12 09:36:12,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2049 Valid, 3196 Invalid, 3217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3084 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-12 09:36:12,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262821 states.